Product Information - PCA Cayman Register

Product Information Boxster/Boxster S

Foreword After eight successful years, the now classic Boxster (986) is to be succeeded by the new Boxster (987). A daunting challenge by any measure, which the new Boxster generation meets with a wealth of technical, design and stylistic innovations.

This training brochure provides detailed information on the many innovations of the new Boxster. It also looks at the cars’ strategic competitors.

The aim of this brochure is to provide the international Porsche sales organisation with the ability to advise customers extremely competently concerning the two new Boxsters. We have therefore taken particular care to supply extensive background information which encloses not only the description of the technical conversion but also the related advantages of the product. Thus, the present Product Information includes information tailored to the customers’ or prospects’ needs and purchasing motives. This knowledge naturally should be used selectively when offering professional technical advice.

Dr. Ing. h.c. F. Porsche Aktiengesellschaft

Marketing & Sales Training

Contents

1

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

1.1

Development objectives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

1.2

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

1.2.1

Main innovations in comparison with the previous model (986) . . . . . . . . . . 6

1.2.2

Main differences between the Boxster and Boxster S (987) . . . . . . . . . . . . 9

1.3

Design . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

1.3.1

Exterior design . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

1.3.2

Interior design . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

2

Engines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

2.1

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

2.2

Comparison of the 2.7 litre and 3.2 litre engines (987 and 986) . . . . . . . 18

2.3

Basic engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

2.3.1

Crankcase . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

2.3.2

Cylinder head and camshaft control . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

2.3.3

Oil supply/oil level measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

2.4

Cooling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

2.5

Air cleaner . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

2.6

Intake system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

2.7

Ignition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

2.8

Engine management and On-Board Diagnostics system (OBD) . . . . . . . . . 24

2.9

Exhaust system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

2.10

Sport Chrono functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

2.11

Change intervals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

3

Transmission . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

3.1

Manual gearbox . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

3.1.1

5-speed manual gearbox . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

3.1.2

6-speed manual gearbox . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

3.1.3

Transmission ratios . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

3.1.4

Synchronisation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

3.1.5

Shifting and shift lever ratio . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

3.1.6

Transmission cooling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

3.1.7

Dual-mass flywheel and clutch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

3.2

Tiptronic S . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

4

Chassis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

4.1

Front axle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

4.2

Steering system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

4.3

Rear axle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

4.4

Brake system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

4.4.1

Boxster operating brake . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

4.4.2

Boxster S operating brake . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

4.4.3

Porsche Ceramic Composite Brake (PCCB) . . . . . . . . . . . . . . . . . . . . . . . 38

4.4.4

Parking brake . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

4.5

Porsche Active Suspension Management (PASM) . . . . . . . . . . . . . . . . . . . 42

4.5.1

How PASM works . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

4.5.2

Software modules for special control algorithms . . . . . . . . . . . . . . . . . . . 44

4.5.3

How the PASM map-controlled dampers work . . . . . . . . . . . . . . . . . . . . . 45

4.6

Porsche Stability Management (PSM) . . . . . . . . . . . . . . . . . . . . . . . . . . . 46

4.6.1

Properties of the enhanced PSM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

4.6.2

Sport mode (Sport Chrono function) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

4.7

Wheels and tires

4.7.1

Wheels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

4.7.2

Tires. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

4.7.3

Run-flat systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52

4.8

Tire pressure monitoring system (RDK) . . . . . . . . . . . . . . . . . . . . . . . . . . 52

5

Body . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

5.1

Body-in-white without doors and handles . . . . . . . . . . . . . . . . . . . . . . . . . 53

5.2

Doors/lids . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

5.3

Roll-over bar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55

5.4

Bumper system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55

5.5

Front end . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56

5.6

Rear end . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57

5.7

Rear spoiler . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57

5.8

Side air inlet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57

5.9

Tank . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58

5.10

Luggage compartments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

5.10.1 Front luggage compartment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59 5.10.2 Rear luggage compartment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60 5.11

Glazing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60

5.12

Wind deflector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61

5.13

Electrically operated convertible top . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62

5.14

Hardtop . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63

6

Aerodynamics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64

6.1

Optimization of the styling of the outer skin . . . . . . . . . . . . . . . . . . . . . . . 66

6.2

Optimisation of the cooling-air guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67

6.3

Underbody lining . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68

6.4

Add-on parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69

7

Interior . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70

7.1

Material design . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70

7.2

Leather interior . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72

7.3

Storage bins and transport concept . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73

7.4

Steering wheels. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75

7.4.1

Basic steering wheel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75

7.4.2

Sports steering wheel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76

7.4.3

Multi-function steering wheel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76

7.5

Pedals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77

7.6

Seats . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78

7.6.1

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78

7.6.2

Standard seats . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79

7.6.3

Fully electric seats . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80

7.6.4

Sports seats . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80

7.6.5

Adaptive sports seats . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80

8

Electrics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82

8.1

Main headlights and front lights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82

8.1.1

Halogen main headlights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83

8.1.2

Bi-Xenon main headlights incl. headlight washer system . . . . . . . . . . . . . . 83

8.2

Rear light unit and high-level third brake light . . . . . . . . . . . . . . . . . . . . . . 85

8.3

Exit lighting/coming home lighting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86

8.4

Wiper system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86

8.5

ParkAssist . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86

8.6

Door mirrors/interior mirror . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87

8.7

Interior lighting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87

8.8

HomeLink ® . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87

8.9

Instruments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88

8.10

Steering column stalk . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89

8.11

Cruise control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89

8.12

Heating/air conditioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90

8.13

Ignition lock with one-key system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91

8.14

Power windows . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91

8.15

Networking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92

8.16

Sport Chrono Package /Sport Chrono Package Plus . . . . . . . . . . . . . . . . . 92

8.16.1 Analogue stopwatch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92 8.16.2 Sport mode /Sport button . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93 8.16.3 Performance display in the PCM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94 8.16.4 Individual memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95

9

Safety and security . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96

9.1

Anti-theft protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96

9.2

Active safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96

9.3

Passive safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98

10

Environment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101

10.1

Materials/recycling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101

10.2

Noise/acoustics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102

11

Audio and communication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103

11.1

CDR-24 CD radio with sound system . . . . . . . . . . . . . . . . . . . . . . . . . . . 103

11.2

Sound Package Plus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103

11.3

BOSE ® Surround Sound system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104

11.4

Aerial system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 106

11.5

CD autochanger/CD autochanger preparation . . . . . . . . . . . . . . . . . . . . 106

11.6

Porsche Communication Management (PCM) . . . . . . . . . . . . . . . . . . . . . 106

11.6.1 Navigation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 106 11.6.2 Telephone module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107 11.7

Mobile phone preparation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107

11.8

Passive handset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107

12

Equipment (EU model). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108

12.1

Standard equipment (EU model) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108

12.2

Individual equipment for MY05 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111

13

Colors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 117

13.1

Exterior colors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 117

13.2

Convertible top colors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 117

13.3

Interior colors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 117

14

Maintenance costs (cost of ownership) . . . . . . . . . . . . . . . . . . . . . . 118

14.1

Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 118

14.2

Repair/insurance classification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 119

15

Technical specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120

16

Comparison. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 125

16.1

An overview of main and secondary competitors . . . . . . . . . . . . . . . . . . 125

16.2

Tabular comparison . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 128

16.3

Side-by-side comparison of Boxster/Boxster S and main competitors . . . 131

16.3.1 Audi TT Roadster 3.2 quattro . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 132 16.3.2 BMW Z4 3.0i . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 134 16.3.3 Mercedes-Benz SLK 350 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 136 16.3.4 Nissan 350 Z Roadster . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 138 16.4

Overview of product advantages/customer benefits . . . . . . . . . . . . . . . . 140

Figure 1: Boxster generations (986 and 987)

1 Overview

Apart from providing marked increases in power to improve performance, the

After eight successful years in pro-

new Boxster and Boxster S also offer

duction, the now classic Boxster (986)

a considerably broader spectrum of

is to be succeeded

product features. Practicality and

by the new Boxster (987).

comfort have been further improved. A comprehensive range of interesting

The exterior immediately reveals the

options for individualisation with new

vehicle to be a totally new yet typical

technologies tailor-made for a sports car

Boxster. The new roadster has a more

is also available.

powerful, attractive and fascinating appearance, without abandoning the

This Boxster generation will fascinate

classic lines.

Boxster aficionados and roadster novices alike.

The interior has been completely redesigned, incorporating typically clear-

The Boxster will thus remain the bench-

lined Porsche design elements and

mark in the roadster segment and

observing the very highest standards of

establish itself among new and known

ergonomics and quality to make the

competitors.

new Boxster a study in automobile evolution par excellence.

1

1.1 Development objectives

• To evolve the Boxster design features

• To maintain the “best-in-class” aerodynamic performance of the

The development objectives for the com-

• To come up with a new design for

Boxster through further improvement

plete overhaul of the model series were

the interior and exterior with an

of the resistance and lift coefficients

influenced by the success story of the

emphasis on night-time design, while

Boxster to date and the accompanying

retaining typical design features

customer reactions. We therefore sent

• To offer a level of standard equipment comparable with the competition

questionnaires to approx. 20,000 sales

• To improve the ergonomics of the

staff of the previous Boxster. Numerous

passenger compartment, particu-

letters from customers as well as mar-

larly for taller people

• To consistently implement lightweight construction techniques

ket observation likewise provided valuable information on our worldwide dealer organisation.

• To maintain Porsche’s competitive edge in the areas of driving performance, driving dynamics,

The specification also took into consider-

braking power and active safety,

ation technological trends and infor-

while achieving a constant level

mation from the competitive envi-

of comfort

ronment. • To offer an S model with even greater It was from this information reservoir

performance and a different look to

that the main objectives for develop-

the basic model

ment of the new Boxster generation were derived:

• To deliver the attractive, typical Porsche sound

Figure 2: Boxster and Boxster S (987)

2

• To significantly improve the cost of ownership

1.2 Overview Exterior/ interior: The exterior has been completely redesigned, giving the new Boxster a more powerful appearance. In addition to widening the body by 21mm/ 0.83 in, the track has also been widened in comparison with the previous model by up to 35 mm/1.38 in at the front and 24 mm/0.95 in at the back depending on the tire size. Particularly striking details include the new headlights with separate headlamps on the front end (fog lamp/

Figure 3: Boxster S

marker light), the more pronounced wing, the new double-arm door mirror, the new aerodynamically optimised rear spoiler and the new dynamic joint style. The line of the convertible top has also been redesigned around the side windows.

The completely redesigned interior has been enhanced ergonomically, while retaining typical Porsche design features. More headroom, a higher backrest, a steering wheel that is now also height-adjustable and repositioned pedals ensure better ergonomics for taller persons.

Figure 4: Boxster interior

The new materials and component designs used, with their attention to

Also available as an option is a multi-

detail, give a very high quality look.

function steering wheel that can be used to operate the various functions of

The newly developed seats offer bet-

the optional PCM.

ter seating comfort and lateral support thanks to features such as a wider back-

Interior upgrades right up to a full

rest. Adaptive sports seats are just

leather interior are available as an op-

one of the extra options available.

tion (incidentally the full leather interior

“Adaptive” means that the side bolsters

is available for the first time in a two-

of the seat cushion and the backrest can

tone design (Black with Stone Grey)).

be individually adjusted to the respective

Discreetly trimmed decorative seams in

occupants and the respective driving

a wide range of colors emphasise the

situation using two controls on the outer

craftsmanship of the design and convey

side of the seat.

a particular air of quality.

3

Engine/transmission:

the respective driving situation. A button

The new steering system with vari-

The basic Boxster is driven by a 2.7

in the center console allows the driver to

able ratio is extremely sensitive and

litre engine whose output has been in-

select between the Normal and Sport

precise and, together with the new

creased by 12 HP to 240 HP. The

programmes.

chassis setup, ensures virtually perfect

Boxster S has a further enhanced 3.2

driving behaviour.

litre engine developing 280 HP, 20 HP

The new Sport Chrono Package

more than before.

option includes an analogue stopwatch

The S variant transmits this power to

and a Sport button for activating Sport

the rear wheels via a newly developed

mode. As the Sport Chrono Package

6-speed manual gearbox whose shift

Plus in combination with the optional

throw has been reduced by approx.

PCM, the performance display offers

15 %. The basic Boxster retains the fa-

extra useful information as well as an

miliar 5-speed manual gearbox, likewise

individual memory. Sport mode can be

with shift throw reduction, as standard

activated using a button in the center

equipment. The 6-speed manual gearbox

console and offers, among other things,

is available as an option in combination

a very sporty setup for the optional

with the newly developed Porsche Active

PASM. A PSM setup designed for

Suspension Management (PASM).

racing conditions with a higher slip threshold, steeper accelerator pedal

Chassis:

characteristic and a more abrupt

Both the Boxster and the Boxster S

high-speed cut-off round off the func-

feature an enhanced aluminium chas-

tional scope. In addition to consider-

sis and a track whose width has been

ably increasing performance and

increased by up 35 mm/13.8 in de-

agility, these packages also help to

pending on the wheel/tire combination.

improve lap times.

The wheels on both vehicles have a larger rolling circumference that together with a new tire generation contributes to the improved driving dynamics. The Boxster is now equipped with 17-inch wheels as standard, while the S model is equipped with the even more impressive 18-inch wheels as standard. In combination with the now standard Porsche Stability Management (PSM), the chassis sets new standards in active driving safety. Porsche Active Suspension Management (PASM), an electronically controlled damper adjustment system, can be ordered as an option. This system allows the ride height to be lowered by 10 mm/0.39 in and resolves the eternal conflict between the desire for comfort in everyday use and sporty performance on country roads or closed circuits. It automatically adjusts the shock absorption capability to

Figure 5: Short block and transmission of the Boxster S

4

Figure 6: Technological overview of the Boxster S

Safety and security:

scopes of the PCM is offered as an

While the active safety of the new

optional extra for increased comfort.

Boxster models has been improved, it is in the area of passive safety that

Four high-quality loudspeakers

significant enhancements have been

ensure excellent sound as standard.

made. With fullsize airbags for driver

Sound Package Plus, the first upgrade

and passenger and separate head and

level for the audio offering, offers a

thorax airbags, the Boxster now has

superior sound experience and plentiful

6 airbags in total as standard. The newly

sound reserves for all driving conditions.

designed seats with integrated thorax

The sound experience can be further

airbags are a key element in the revised

enhanced on request with the new Bose

Porsche Side Impact Protection

Surround Sound system. This means

System (POSIP).

that for the first time surround sound can now be enjoyed in the Boxster.

Audio /communication:

Eleven loudspeakers including subwoofer

The Boxster series is fitted with the

and a 7-channel digital amplifier inte-

Porsche CDR-24 double-height CD radio

grated in the digital MOST ® bus ensure

as standard for improved ergonomics.

a sound experience never before experi-

An enhanced PCM with navigation

enced in the sports car and specifically

module and separate DVD drive in the

the roadster segment.

luggage compartment is available upon request. The integrated CD drive can now also be used without restriction as an audio drive. An optional telephone module, similarly enhanced, is also available for this system. A multi-function steering wheel with controls for the various audio and communication

5

1.2.1 Main innovations in comparison with the previous model (986) Boxster (987)

Boxster S (987 S)

Boxster (986)

Boxster S (986 S)

MY05

MY04

Completely new exterior/interior design

Previous exterior/interior design

Overall vehicle 6-cylinder horizontally opposed engine

Drive 2.7 l (164 cu in) 176 kW/240 HP 270 Nm/199 lbft

3.2 l (194 cu in) 206 kW/280 HP 320 Nm/236 lbft



New intake system with twin-branch distribution pipe, larger air cleaner

Basic

Light-weight exhaust system

Standard exhaust system

Standard manifold

High-performance manifold

Standard manifold

Emission classification EU4 5-speed manual gearbox with approx. 26 % reduction in shift throw Optional: 6-speed manual gearbox with approx. 15 % reduction in shift throw (in combination with PASM (Sport package))

Emission classification EU3, LEV

New 6-speed manual gearbox with approx. 15 % reduction in shift throw

5-speed manual gearbox

6-speed manual gearbox

Adapted 5-speed Tiptronic S with improved shifting comfort

5-speed Tiptronic S

Sport Chrono Package (optional)

Not available

Improved standard chassis (track width, kinematics/elastokinematics, strength, weight, etc.)

Basic

Optional: PASM chassis incl. lowering by 10 mm and two programmes, “Normal” and “Sport”

Optional: Sports chassis incl. lowering by 10 mm

Steering with variable transmission ratio, steering wheel with manual reach and height adjustment

Steering with fixed transmission ratio, steering wheel with manual reach adjustment

Chassis

4-piston aluminium monobloc fixed-caliper brake Basic

Power-boosted brake system (with larger brake master cylinder among other things)

Basic

Power-boosted brake system

Brake calipers: anodised black

Brake calipers: painted red

Brake calipers: anodised black

Brake calipers: painted red

Brake discs: ventilated and perforated FA: Ø 298 mm x 24 mm / FA: Ø 11.73 in x 0.94 in RA: Ø 299 mm x 20 mm / RA: Ø 11.77 in x 0.79 in


Brake discs: ventilated FA: Ø 298 mm x 24 mm / FA: Ø 11.73 x 0.94 in RA: Ø 292 mm x 20 mm / RA: Ø 11.50 in x 0.79 in


Brake booster with 18 % increase in boosting factor

Basic

ABS 8.0

ABS 5.7

Not available

Optional: Porsche Ceramic Composite Brake (PCCB)

Not available

6

Boxster (987)

Boxster S (987 S)

Boxster (986)

Boxster S (986 S)

MY 05

MY 04

Chassis 17-inch Boxster II wheel FA: 6.5J x 17 RO 55 RA: 8J x 17 RO 40 with tires: FA: 205/55 ZR17 RA: 235/50 ZR17

18-inch Boxster S wheel FA: 8J x 18 RO 57 RA: 9J x 18 RO 43 with tires: FA: 235/40 ZR18 RA: 265/40 ZR18

16-inch Boxster wheel 6J x 16 RO 50 7J x 16 RO 40 with tires: FA: 205/55 ZR16 RA: 225/50 ZR16

17-inch Boxster S II wheel 7J x 17 RO 55 8.5J x 17 RO 48 with tires: FA: 205/50 ZR17 RA: 255/40 ZR17

Optional: New 18- and 19-inch wheels

Optional: New 19-inch wheels

Optional: 17- and 18-inch wheels

Optional: 17- and 18-inch wheels

Tire sealing compound and compressor

High-pressure spare wheel and jack

PSM (standard) with improved performance (PSM 8.0) and optional Sport Chrono Package for an even more agile setup

PSM (optional)

Body/exterior Improved torsional and flexural rigidity (+9 % / +14 %), improved crash structures

Basic

Body width: +21 mm/+0.38 in

Basic

Luggage compartment lid (f/r) made from aluminium

Luggage compartment lid made from steel

New double-arm door mirror

Standard door mirror

New bow-type door handles

Hinged door handles

3-layer convertible top, improved water management system, opening/closing possible at speeds ut to 50 km/h / 30 mph

2-layer convertible top

Side windows with water-repellent coating

Side windows without coating

Integrated optical parking sensors (optional)

Basic

Further enhanced aerodynamics

Basic

cd = 0.29

cd = 0.30

cd = 0.31

cd = 0.32

Titanium-colored logo on rear lid

Silver-colored logo on rear lid

Black logo on rear lid

Titanium-colored logo on rear lid

Central oval tailpipe (new design)

Central dual tailpipes (new design)

Central oval tailpipe

Central dual tailpipes

Body/interior Completely new interior design (higher-quality appearance, ergonomically optimised, new colors, more storage, etc.)

Basic

Leather interior (optional) featuring more decorative seams in a discreet contrasting color for an even higher-quality look

Leather interior (optional)

New seats with numerous improvements (e.g. more headroom, more shoulder room, substantially improved lateral support) Optional: adaptive sports seat

Basic

New sports pedal system with pedals repositioned further forward

Basic

New steering wheels (3-spoke steering wheel (standard), 3-spoke sports steering wheel (optional), multi-function steering wheel (optional, only in combination with optional PCM)

3-spoke steering wheel

New integrated switches and operating concept

Basic

New POSIP featuring: – Side-impact protection elements in each door – Head airbags integrated in door-trim panel – Thorax airbags in side bolsters of seats

POSIP featuring: – Side-impact protection elements in each door – Side airbags integrated in door-trim panel

7

Boxster (987)

Boxster S (987 S)

Boxster (986)

Boxster S (986 S)

MY 05

MY 04

Clear-glass H7 projection beam headlights (halogen),new design with improved illumination; indicator light integrated in module, fog light and position light moved to front-apron unit

H7 reflective headlights (halogen); fog light, indicator light and marker light integrated in one module

Bi-Xenon headlights (optional) with automatic range adjustment and headlight washer system

Litronic headlights (optional) with automatic range adjustment and headlight washer system

High-level third brake light: LED (response time: 0.1 ms)

High-level third brake light: bulb (response time: 100 ms)

Cruise control (optional) featuring extended speed range (30–240 km/h / 19–150 mph)

Cruise control (optional) with speed range from 40– 210 km/h / 25–131 mph

Electrics/electronics

Alarm system including interior radar surveillance Automatic coming home lights

Not available

®

Not available

HomeLink (integrated garage door opener, optional, standard for USA)

Audio/communication Double-height CDR-24 radio incl. 4 loudspeakers (standard)

CDR-23 radio incl. 2 loudspeakers (optional, standard: USA)

Porsche Communication Management (PCM) with 5.8″ color screen, CD radio, aerial diversity and extended on-board computer DVD navigation module (optional) (map material for Europe on one DVD)

Porsche Communication Management (PCM) with 5.8″ color screen, radio with combined CD/CD-ROM drive, aerial diversity and extended on-board computer incl. integrated CD-ROM Navigation module (map material for Europe on 3 CD-ROM’s)

Telephone module with improved hands-free quality (optional) USA: mobile phone preparation also available for PCM

Telephone module (optional)

Sound Package Plus with 7 loudspeakers, 180 W (optional, standard on Boxster S in USA)

Digital sound package with 6 loudspeakers, 220 W (optional)

BOSE® Surround Sound system with 11 loudspeakers, 325 W (optional)

BOSE® Sound system with 10 loudspeakers, 225 W (optional)

Performance /weights

(values in brackets refer to Tiptronic S)

Top speed: 256 (250) km/h 160 (156) mph

Top speed: 268 (260) km/h 167 (162) mph

Top speed: 253 (248) km/h 158 (155) mph

Top speed: 264 (258) km/h 165 (161) mph

0–100 km/h / 0–62 mph: 6.2 (7.1) s

0–100 km/h / 0–62 mph: 5.5 (6.3) s

0–100 km/h / 0–62 mph: 6.4 (7.3) s

0–100 km/h / 0–62 mph: 5.7 (6.4) s

80 –120 km/h / 50–75 mph, penultimate gear: 6.9 (7.7) s

80–120 km/h / 50–75 mph, penultimate gear: 6.8 (7.2) s

80 –120 km/h / 50 –75 mph, penultimate gear: 6.9 (7.7) s

80 – 120 km/h / 50 – 75 mph, penultimate gear: 7.4 (7.5) s

Unladen weight (DIN): 1,295 kg … 1,410 kg / 2855 lbs … 3109 lbs (1,355 kg … 1,455 kg) / (2987 lbs … 3208 lbs)




Nürburgring lap time (Nordschleife): Boxster: 8:31 min Boxster S: 8:18 min

Nürburgring lap time (Nordschleife): Boxster: 8:42 min Boxster S: 8:27 min

Cost of ownership Significant reduction in the cost of ownership and costs of regular maintenance

Basic

Prolonged oil change intervals: mileage-based, every 30,000 km / 20,000 miles

Oil change intervals: mileage-based, every 20,000 km / 12,000 miles

Prolonged main service intervals: mileage-based, every 60,000 km / 40,000 miles

Main service intervals: mileage-based, every 40,000 km / 24,000 miles

Table 1: Main innovations in comparison with the previous model (986)

8

1.2.2 Main differences between the Boxster and Boxster S (987) Detail

Boxster

Boxster S

Tailpipes

Oval individual tailpipe

Dual tailpipes

Air inlet grille in front apron

Black

Titanium-colored

Model logo

Titanium-colored

Silver-colored

Third air inlet in front apron

Not available

Standard

Wheels

17-inch Boxster II wheel

18-inch Boxster S wheel

Engine



Transmission

5-speed manual gearbox with dual-mass flywheel


Brake system

Standard brake system

Power-boosted brake system

Brake calipers

Anodised black

Painted red

Alarm system/ interior surveillance

Alarm system incl. radar interior surveillance (optional)

Alarm system standard, radar interior surveillance (optional)

Design details

Painted Volcano Grey

Painted Volcano Grey, accentuating details in aluminium-look finish

Dials

Black

Light Grey

Door armrest and center console storage bin

Basis

In leather with stitching

Gear lever

Cap with 5-speed gearshift pattern

Cap with 6-speed gearshift pattern (design as on basic model)

Scuff plates

Plastic cover with soft-touch paint finish embossed with metal “Boxster” logo

Plastic cover with soft-touch paint finish embossed with metal “Boxster S” logo

Exterior

Engine

Chassis

Interior

Table 2: Main differences between the Boxster and Boxster S (987)

9

Figure 7: Boxster S

1.3 Design 1.3.1 Exterior design

function”. While the silhouette of the

ed lighting component design and

vehicle retains the quintessential

the delicate surfaces.

Boxster look, the restyled exterior with its many new features represents a

The front lights with a combination of

The first Boxster with the internal

significant visual departure from the

fog light and marker light are a classic

development code 986, launched over

previous model. The multitude of inno-

accent. Their deep position significantly

8 years ago, was the start of a new

vations is impossible to take in at first

increases the efficiency of the fog lights.

chapter in the success story of

glance, a fact which increases interest

The same attention to detail has been

Porsche. The focus in developing the

and generates enthusiasm.

exercised for the reflectors and the front

new Boxster generation 987 has been

light housing as for the main headlights.

to redesign its appearance, while at

Front view:

The separation of the main headlight and

the same time cultivating and accen-

The front view of the vehicle is charac-

front light is a striking detail with a high

tuating the design features for which

terised by its application of classic

recognition value: the marker light illu-

Porsche and in particular the Boxster

Porsche design principles. The new

minates to the extreme front and side of

are known. The car had to be instantly

headlight shape with separate front

the headlight when it is dark.

recognisable as a Boxster and visu-

lights underneath, the large air inlets

ally distinct from the 911.

and the new contour of the front

The face: Utterly new, and yet unmis-

top are design features worthy of the

takeably Porsche.

The new Boxster is like an athlete who

Boxster.

has kept training and whose form has improved over the years. Its powerful

The shape of the main headlights in

appearance is characterised by taut

particular defines the face of the new

surfaces and striking, well-defined

Boxster. Their deeper and wider position

musculature. With its details of a high

makes the front end look shorter and in

design quality, the overall appearance

the process wider and more powerful.

represents the living embodiment of the

The clear glass technology employed

Porsche motto “forms follows

allows a direct view of the sophisticat-

10

Side view:

The new side air inlet echoes the door

The side view is characterised by the

window pane appearance and the rear

powerful shape of the wings. This ef-

door gap, its individual measures com-

fect is emphasised by the clearer and

bining to produce a smooth side view

much more solid lines of the doors.

with a clean style and a number of new

The door sill detail, which is continued

features in comparison with the previ-

to the front and rear ends, makes the

ous model.

side of the vehicle look both streamlined and stable at the same time. The wheel cutouts provide space for wheels with larger rolling circumferences. The additional styling detail in the form of a narrow lip around the wheel cutouts emphasises the dynamic nature of the wheels: 17- inch wheels with a dynamic 5-double-spoke design for the basic model and 18-inch wheels with a striking 5-spoke design for the Boxster S. Three different 19-inch wheels are available as an option for the Boxster. The 19-inch Carrera Classic wheel is an extremely elegant five-spoke wheel with narrow spokes that provide a good view of the technical details. The 19-inch SportDesign wheel is the new interpretation of the old Porsche multi-spoke wheel. The wheel designs available as standard for the 911 Carrera S can also be ordered in 19-inch versions for the Boxster and Boxster S.

The line of the convertible top has also been redesigned around the side

Figure 8: Boxster

windows, giving it a more taut shape when seen from the corner of the eye. As well as offering more headroom when getting in and out, the redesigned convertible top also allows better overthe-shoulder visibility.

The new door mirror continues the design concept of the Carrera GT mirror, taking it one step further with a horizontal double arm. The new door handle with its curved design complements the new door both ergonomically and stylistically.

Figure 9: Boxster

11

Figure 10: Boxster S

Rear view: The rear view of the Boxster is dominated by the dynamic rear lights. They feature a new, brilliant look achieved through a clean division between the red and clear area. Whereas the tail light on the previous model illuminated just one light chamber, the tail light on the new Boxster illuminates all three light chambers to give the rear view a new typical Porsche night-time design. The high-level third brake light is now fitted with a clear cover. The dynamism of the rear has been further accentuated by the rear section joints which start at the wheel housing and climb towards the rear – yet another design detail borrowed from the Carrera GT. The pronounced rear lid joint between the lights, which fits in perfectly with the styling of the rear spoiler, lends the rear added impact. The rear is finished by the central tailpipe which also serves as a distinguishing feature.

12

Figure 11: Boxster S interior in Cocoa leather

1.3.2 Interior design

technique, seams and surface struc-

tion has been paid to ensuring that all

ture has been improved in comparison

switches meet the ergonomic require-

The complete redesign of the interior

with the previous model. The percentage

ments of a sports car.

was undertaken with the aim of en-

of soft paint surfaces has been re-

hancing, optimising and reinforcing

duced and more components based

proven details and configurations.

on slush technology used instead.

The cockpit, which now features

The advantages of slush technology are

stronger and more powerful shapes,

higher-quality surfaces, more pre-

is dominated by four round vents

cise sizing of components, uniform

finished with high-quality metal-look

graining and the option to describe

decorative rings. Foremost among the

very small radii. The overall impression

round instruments is the central rev

is one of higher quality.

counter. The new night-time design, with its white LED lighting, increases

The Boxster has a new 3-spoke steer-

the impression of quality of the in-

ing wheel with clear, geometric

terior and illuminates all of the controls

shapes. The optional sports steering

and displays to great effect.

wheel also draws from this concept but appears even sportier thanks to its

The center console, switches, air outlet

round shapes and has a slightly smaller

vents and equipment have been seam-

rim with integrated thumb rest.

lessly integrated in the new dashboard and designed to give that familiar

The new center console echoes the

Porsche impression, even at first

styling features of the new interior. The

glance. This impression is strengthened

number of joints has been significant-

by the clean lines of the door-trim

ly reduced and the styling of the radio,

panel. The quality of the interior with

air-conditioner controls and all other

regard to joint quality, upholstering

switches standardised. Particular atten-

13

The redesign of the interior has permitted the provision of a practical storage bin under the air conditioning control panel and the realisation of a larger glove compartment. The newly developed cup holder is located behind the decorative dashboard trim. The decorative trim can be returned into its original position once the cup holder is extended, ensuring a unified dashboard look.

The shift lever has been ergonomically improved and given a sportier design. The storage bin in the center console behind the handbrake lever has been fitted with a longer and more padded lid which can be used as a center arm rest.

The redesigned door-trim panels reflect the stronger structure of the interior and the ergonomic aim of increasing the intuitiveness of the controls. So, for example, the direction of operation of the controls for the power windows now matches the window movement. The switches for the seat memory of the optional fully electric seats and the adaptive sports seats

Figure 12: Centre console

have also been integrated in the doortrim panels. All of the controls are in the driver’s field of vision so that they can be used without the driver being distracted from what is happening on the road.

Figure 13: Door-trim panel

14

2 Engines The output and torque of the Boxster have been increasing step by step ever since its introduction in October 1996. The basic Boxster started with a 2.5 litre engine and 204 HP, however by the time of the introduction of the S variant (developing 252 HP from 3.2 litres) in model year 2000 it had increased to 2.7 litres and 220 HP. The most recent versions available from MY03 have both more output (228 HP/ 260 HP) and more torque with the associated higher toque curve.

The development of the new Boxster

Figure 14: Output and torque of 987 vs. 986

generation has provided the opportunity for another significant revision of the engines. The 2.7 litre engine of the Boxster now delivers over 176 kW (240 HP), while the 3.2 litre engine of the Boxster S delivers an impressive 206 kW (280 HP). However the new engines have more than just their power values going for them – they also offer greater power in the lower and mid rev range (Boxster: 270 Nm/199 lbft, Boxster S: 320 Nm/229 lbft; both between 4,700 and 6,000 rpm).

As well as the model designation on the rear lid, the two engine variants of the Boxster series can be identified by their different tailpipes. The Boxster has an

Figure 15: Output and torque of 987 S vs. 986 S

oval tailpipe with a new design, while the Boxster S has redesigned dual tailpipes.

15

2.1 Overview Both Boxster engines are characterised by the following design features:

• 6-cylinder horizontally opposed engine • Water cooling • Aluminium block and cylinder heads • Integrated dry sump lubrication system • Four-valve technology • Hydraulic valve clearance compensation • “VarioCam” camshaft adjustment • Hot-film air flow sensor • Two-stage resonance intake system

Figure 16: Short block and transmission of the Boxster

• Fuel injection (sequential; multipoint) • Individual ignition coils, static highvoltage ignition system • Electronic engine management system (Motronic ME 7.8) • Cylinder-specific knock control • Idle compensation device • Electronic accelerator pedal • Parallel three-way catalytic converters, each with pre-catalytic and main catalytic converter • Stereo Lambda control circuit (linear-measurement pre-catalytic converter sensor and narrow band oxygen sensor as control sensor) • On-Board Diagnosis system for monitoring the exhaust emission control system

Figure 17: Section of the 3.2 litre engine (Boxster S)

16

The 3.2 litre engine has its 6-cylinder horizontally opposed design with outstanding balancing of masses and rigid camshaft/crankshaft drive to thank for its minimal vibration and typical Porsche sound.

The redesign of the exhaust system, in particular the manifold and silencer, and the air cleaner has allowed the gas cycle to be improved even further. These measures have helped to improve performance, reduce weight and ensure compliance with statutory exhaust requirements. The increase in torque in the lower rev range is down to a twin-branch distribution

Figure 18: Output and torque of Boxster vs. Boxster S (987)

pipe with intake-manifold flap. It is also a major contributing factor to the maximum torque value being between 4,700 and 6,000 rpm – for both the Boxster and the Boxster S. This enables high performance and above all good flexibility characteristics.

The 3.2 litre engine used in the new Boxster S has many characteristics in common with the 2.7 litre engine. One major difference, however, is that the new 2.7 litre engine uses a fully aluminium crankshaft bearing house, while the crankshaft bearing saddle of the 3.2 litre engine continues to be made with grey cast iron inserts because of the greater engine power.

17

2.2 Comparison of the 2.7 litre and 3.2 litre engines (987 and 986)

bold = changes

Boxster (987)

Boxster S (987 S)

Boxster (986)

MY 05

Boxster S (986 S) MY 04

Max. engine output at rpm

176 kW (240 HP) @ 6,400 rpm

206 kW (280 HP) @ 6,200 rpm

168 kW (228 HP) @ 6,300 rpm

191 kW (260 HP) @ 6,200 rpm

Max. torque

270 Nm/199 lbft

320 Nm/236 lbft

260 Nm/192 lbft

310 Nm/229 lbft

@ 4,700 rpm

@ 4,600 rpm

62.5 kW/l (85.0 HP/l)

61.3 kW/l (83.3 HP/l)

at rpm Specific output

@ 4,700 – 6,000 rpm 65.2 kW/l (88.9 HP/l)

Exhaust emission standard Crankcase

64.4 kW/l (87.5 HP/l)

Euro 4, LEV Fully aluminium bearing saddle, thicker bearing shells (reduction in weight 5.5 kg/12.1 lbs)

Euro 3/D4, LEV

Aluminium bearing saddle with grey cast iron inserts, bearing shells

Aluminium bearing saddle with grey cast iron inserts, bearing shells

Crankshaft

With deeper central hole (reduction in weight 0.3 kg/0.7 lbs)

Status as of MY 04

Belt drive

Tensioning rollers/deflection pulleys made of plastic in engines with manual gearbox (reduction in weight approx. 0.5 kg/1.1 lbs)

Tensioning rollers/deflection pulleys made of steel

Air cleaner

New air cleaner with new housing

Status as of MY 04

With twin-branch distribution pipe with intake-manifold flap

Status as of MY 04

Infinitely adjustable

2 with two-stage adjustment

Exhaust system

Lower exhaust gas back pressure thanks to larger cross sections and damping of drive-related vibrations by heat-resistant damping elements, among other things

Status as of MY 04

Manifold

Standard manifold; lighter in weight with integrated precatalytic converter

Catalytic converter

3-way catalytic converter system with one pre- and one main catalytic converter left and right; lightest catalytic converters in the world

3-way catalytic converter system with one catalytic converter left and right (USA: cascade catalytic converters)

Silencer

Lighter in weight with improved flow rate; 2 parallel silencers with crossover pipe and integrated main catalytic converter

Status as of MY 04

Resonance intake system Electrics fans in engine compartment

Tailpipe

Oval tailpipe in new design

High-performance manifold; lighter in weight with integrated pre-catalytic converter

Dual tailpipes in new design

Standard manifold (with integrated pre-catalytic converter in USA)

Oval tailpipe

Dual tailpipes

Optimised impeller for increased flow rate and improved component cooling

Status as of MY 04

Water bearing casing

Plastic, flow-optimised (reduction in weight 0.85 kg/1.9 lbs)

Die-cast aluminium

Tandem pump

Vacuum for brake boosting provided by a mechanical vacuum pump

Sucking jet pump and vacuum reservoir

Water pump

18

bold = changes

Oil extraction pump

Oil dipstick Oil/water heat exchanger Radiator air flow concept

Boxster (987)

Boxster S (987 S)

Boxster (986)

Boxster S (986 S)

MY 05

MY 04

Lower frictional losses and higher delivery capacity (reduction in weight 80 g/0.18 lbs)

Status as of MY04

Omitted (reduction in weight 180 g/0.39 lbs)

Present

Carry over parts concept (reduction in weight 360 g/0.79 lbs)

Carry over parts concept

Closed, air is directed to the front wheel housings

Different versions

Open, air is directed downwards in front of the front wheel housings

Radiator fan control

Continuous

Two-stage

Engine compartment scavenging blower

Operation depends on intake air and ambient air temperature

Operation depends on intake air temperature

Engine oil quantity (factory filling) Secondary air pump

10.4 l/2.75 US gal

Battery

10.4 l/2.75 US gal

10.6 l/2.8 US gal

Fastened directly to the engine (reduced noise, reduction in weight 0.25 kg)

Fastened directly to the body

Standard

Optional

Air-conditioning compressor Engine weight

10.4 l/2.75 US gal

MT: 190.5 kg/420 lbs AT: 182.8 kg/403 lbs

MT: 196.3 kg/433 lbs AT: 187.8 kg/414 lbs

60 Ah USA: 70 Ah

70 Ah USA: 80 Ah

MT: 195.0 kg/430 lbs AT: 188.3 kg/415 lbs

MT: 196.2 kg/433 lbs AT: 188.5 kg/416 lbs

60 Ah

Generator

2,100 W

1,680 W

Motronic

ME 7.8/40 (enhanced computing and memory capacity)

ME 7.8

Oil change

30,000 km / 20,000 miles

20,000 km / 12,000 miles

Air filter change

60,000 km / 40,000 miles

40,000 km / 24,000 miles

Spark plug change

90,000 km / 60,000 miles

80,000 km / 48,000 miles

Poly V-belt change

90,000 km / 60,000 miles

80,000 km / 48,000 miles

Table 3: Comparison of the 2.7 litre and 3.2 litre engines (987 and 986)

19

2.3 Basic engine

2.3.2 Cylinder head and camshaft control

2.3.3 Oil supply /oil level measurement

The cylinder heads of the Boxster

Both Boxster engines feature the familiar

A large amount of development on the

engines are in three parts: cylinder

integrated dry sump lubrication sys-

2.7 litre engine has been rewarded

head with 4 valves per cylinder, cam

tem. Its purpose is to ensure a reliable

with effective weight-reduction

follower housing with hydraulic tappets

supply of oil at all times. Two return

measures. The bearing saddle which

and cylinder head cover.

pumps draw the oil out of the cylinder

2.3.1 Crankcase

used to be made from grey cast iron is

heads. It is then defoamed in two swirl

now made from an aluminium alloy.

The new 2.7 litre and 3.2 litre engines

pots before being directed to the oil

The crankshaft now has thicker bear-

also use the familiar VarioCam cam-

sump. A third oil pump in the oil sump

ing shells to enable it to absorb the

shaft adjustment system. VarioCam is

provides the lubrication points in the

higher forces of the performance-en-

based on the idea of producing a vari-

engine with pressure oil. This principle

hanced engine without difficulty.

able engine which can be optimised for

guarantees an optimum oil supply,

maximum performance and torque

even under extreme conditions such as

The crankshaft bearing saddle of the

as well as favourable fuel economy

high lateral acceleration.

3.2 litre engine continues to be made

and exhaust emissions when driving

with grey cast iron inserts because of

in city traffic or on secondary roads.

The launch of the water-cooled Boxster

the engine’s significantly higher perform-

This is achieved by adjusting the timing

engine generation in October 1996 was

ance.

of the inlet camshafts (“VarioCam”).

the ideal opportunity to introduce an

Adjustment of the timing is performed

additional electrical oil level measure-

using the familiar “vane adjuster”

ment with display in the instrument clus-

control element.

ter as a complement to the classic oil level measurement via the oil dipstick. Following on from positive experiences with electrical oil level measurement and a changeover in measuring habits away from manual measurement via the oil dipstick to electrical oil level measurement, the new Boxster engines – like the new 911 Carrera/S engines – do not have an oil dipstick (for more information see the Product Information for the 911 Carrera/911 Carrera S).

Figure 19: VarioCam

20

2.4 Cooling The new Boxster retains the familiar cross-flow cylinder head cooling system from the first Boxster for efficient and even distribution of coolant to all cylinders. The water pump, now a carry over part with the new 911 Carrera/S, ensures a higher coolant flow rate.

The Boxster and Boxster S versions with manual gearbox are fitted with two radiator modules located as before in the wings ahead of the front wheels. These have been increased both in area (approx. 5 %) and depth (approx. 20 %) and are identical with the radiator modules of the new 911 Carrera/S. The two more powerful electric fans also feature

Figure 20: Front-of-vehicle technology in the Boxster S

automatic requirement-driven control and a modified air flow concept.This ensures

The new line layouts for the radiator in

On the Boxster S with Tiptronic S,

an optimised air flow and an aerody-

the front end and the reworking of the

an additional third radiator is used in

namically optimised cooling-air sys-

radiator connections have reduced

the front end of the vehicle to facilitate

tem. This new feature permits infinite

the sensitivity of the new Boxster

cooling of the automatic transmis-

control of the fan speed as a function

models to damage and hence reduced

sion oil via an additional oil-water heat

of the coolant temperature and the

repair costs. The use of cost-effective

exchanger in the common water circuit.

system pressure in the air conditioning

brackets with desired break points

system instead of two-stage control.

prevents the radiator module being dam-

The improvement in the efficiency of

It has the advantage of requiring less

aged in a slight collision, for example.

the water-cooling system means that the

current and therefore creates less of a

When it comes to repair, the damaged

smaller oil/water heat exchanger

load on the vehicle electrical system

plastic carriers can be replaced and

(engine-oil cooling) of the 2.7 litre engine

as well as being less noisy.

the radiator module re-mounted. Further-

can now also be used in the 3.2 litre

more the use of quick couplings

engine, which has resulted in a reduc-

throughout the cooling system pipework

tion in weight of 360 g/0.79 lbs.

has reduced the amount of repair work required in the event of damage, again resulting in lower repair costs.

21

2.6 Intake system

The distribution pipe flap is closed in the lower rev range which causes the

The new Boxster engines are equipped

6-cylinder engine to behave like two

with a new intake system. As with the

3-cylinder engines running in parallel in

previous generation of engines, the

terms of routing of the intake air, there-

system for the new engines is once

by improving torque behaviour in the

again a resonance intake system with

lower rev range. The distribution pipe

a switchable resonance flap in the trans-

flap is open in the upper torque ranges.

verse resonance tube between the laterFigure 21: Air cleaner

al containers.

This new, two-stage resonance intake system can be used to better adjust

2.5 Air cleaner

The main innovation is a twin-branch

the air oscillations in the intake system

distribution pipe with intake-mani-

to the respective engine speeds to en-

The flow optimisation measures under-

fold flap. The intake pipe features a lon-

sure higher torques even at low rpms,

taken and the resultant reduction in

gitudinal partition wall which allows the

a more even torque curve and high

backpressure are the main reasons for

intake volumes of the two cylinder banks

maximum output.

the improvement in performance.

to be separated or combined by means

The larger filter area results in less

of a switchable flap.

specific stress, which has enabled the change intervals to be extended to 60,000 km / 40,000 miles.

The significant improvement in the degree of water deflection (“spray water management”) ahead of the air cleaner, which protects the hot film air flow sensor against failure caused by taking in minute droplets of water, has also had a positive effect with regard to maintenance costs.

Figure 22: Intake system

22

Figure 23: Operation of resonance and distribution pipe flaps (Boxster)

Figure 24: Operation of resonance and distribution pipe flaps (Boxster S)

Boxster 2.7 litre

Boxster S 3.2 litre

Distribution pipe flap open at rpm

3,000 ... 5,000 5,600 ... 7,200

3,500 ... 4,700 5,400 ... 7,200

Resonance pipe flap open at rpm

5,000 ... 7,200

4,700 ... 7,200

Table 4: Switching points of the flaps in the intake system

23

2.7 Ignition The new Boxsters feature the familiar

2.8 Engine management and On-Board Diagnostics system (OBD)

static high-voltage ignition system

The familiar On-Board Diagnostics system (OBD -> USA) or the European On-Board Diagnostics system (EOBD -> Europe/RoW) is also used on the new

with individual ignition coils. The function

The new Boxster models are equipped

of the distributor has been adopted from

with the familiar engine management

the Motronic system, where the output

system Motronic ME 7.8, now with

This system is designed to warn drivers

modules activate the individual ignition

40 Mhz, as standard. Innovations here

anywhere in the world, via an appro-

coils directly. This has the following

include increased computing power

priate signal in the instrument cluster,

advantages:

and greater memory capacity. These

of any emission- or engine-related

enhancements are required to facilitate

faults. Each system is fully compliant

the following additional functions:

with all national legislation.

• High level of ignition safety • Minimum electromagnetic interference with other electronic components • No requirement for ignition cables and

• Sport Chrono Package • OBD enhancement

distributors and therefore elimination

• Infinite control of radiator fans

of the problems associated with them

• Additional intake-manifold flap for distribution pipe

Communication with the other drive controllers (PSM, Tiptronic S) takes place via the CAN bus (CAN = Controller Area Network), a bi-directional data bus that enables an intensive exchange of data without placing an excessive burden on the system.

Figure 25: Motronic ME 7.8/40

24

Boxster models.

2.9 Exhaust system The two new Boxster models are equipped with a totally new exhaust system. It features larger cross sections for a lower exhaust backpressure, which has a positive effect on performance. The use of thin-wall technology for the pipes, catalytic converters (wall thickness of 1.2mm/0.05 in instead of 1.5 mm/0.06 in) and silencers (double wall technology with 2 x 0.5 mm/ 0.02 in instead of 2 x 0.75 mm/0.03 in) has permitted a reduction in weight of approx. 4.15 kg for the new exhaust Figure 26: Exhaust system of the Boxster

systems.

Comfort has been increased through the use of Stop Shock ® elements.

emission levels even without additional

approx. 75 mm/2.96 in. The down-

These heat-resistant damping elements

premixing in a sophisticated high-per-

stream main catalytic converter,

located between the exhaust system

formance.

which has been integrated in the main

and the engine damp all drive-related

silencer for reasons of compactness,

vibrations (e.g. idle, component and

The use of the latest catalytic converter

has a diameter of 118 mm/4.45 in and

engine vibrations), resulting in very little

technology with pre-catalytic and main

a length of 90 mm/3.55 in.

vibration when the engine is running.

catalytic converters ensures the best

®

The Stop Shock elements even reduce

possible emission control values (EU 4).

vibrations on unfavourable road

The use of ceramic mat coverings to insulate the exhaust pipe restricts the

surfaces caused by the inherent lower

To ensure quick heating and hence

amount of heat radiated to the luggage

torsional rigidity of cabriolets/roadsters.

quick conversion of pollutants (the

compartment and reduces the re-

operating temperature range for catalyt-

sponse time of the main catalytic

In the case of the 2.7 litre engine,

ic converters starts at around 300 °C/

converters.

the standard manifold of the 2.7 litre

572°F), the pre-catalytic converter is

engine from the previous model which

relatively small in size with a diameter of

was tailored to the engine torque and

approx. 102 mm/4.02 in and a length of

performance characteristics has been adapted to the new exhaust system. The Boxster S uses a high-performance manifold which facilitates an improved gas cycle for significantly higher output. It also ensures better mixing and hence preconditioning of the raw emissions before they are converted in the catalytic converter. The raw emissions from the 2.7 litre engine are lower due to the smaller displacement which means that a standard manifold can deliver the required exhaust

Figure 27: Standard manifold (Boxster)

25

Figure 28: High-performance manifold (Boxster S)

The Boxster uses an oxygen sensor with a continuous-measurement function to ensure compliance with the exhaust emission standard EU 4. In contrast to the standard oxygen sensor which only indicates whether the engine mixture is lean or rich, the continuous sensor measures the exact richness or leanness of the mixture. This additional information means that

Figure 29: Tailpipe of the Boxster

the mixture can be controlled so as to ensure most effective operation of the catalytic converter. This happens even during rapid load changes.

As in MY04, there is no need for different silencer variants on the manual and Tiptronic S vehicles. However different size exhaust pipes are needed due to the different gas dynamics of the 2.7 litre and 3.2 litre engines.

The exhaust system of the new Boxster is complemented by an oval tailpipe with a new design. The distinguishing feature of the Boxster S is a dual tailpipe, also with a new style.

26

Figure 30: Tailpipe of the Boxster S

2.10 Sport Chrono functions

reinforces the sporty character of the vehicle.

A Sport Chrono Package – or in combination with PCM a Sport Chrono Pack-

• More dynamic acceleration pedal

age Plus – which helps to significantly

characteristic

increase driving pleasure is offered

The electronic accelerator pedal

as an option for the new Boxster models

(electronic throttle) has been used

(see also the section on Electrics).

on the Boxster models since MY01.

Pressing the “Sport” button activates

With this system, the accelerator pedal

the following three special engine

position is converted into electrical

functions:

signals via potentiometers and forwarded as a control signal to the electro-

• More sporty load cycle behaviour

mechanical throttle via the Motronic

Pressing the “Sport” button lends a

control module. The “conversion” bet-

sportier feel to the transitions bet-

ween accelerator pedal angle and

ween traction and overrun. This

throttle angle, the so-called accelera-

means that the load change which

tion pedal characteristic, is per-

occurs when accelerating or decelera-

formed in the Motronic control unit.

ting becomes more spontaneous and

Sensitivity and hence driveability in

dynamic.

the lower speed and load range are factors here, as is even transmission

• More abrupt high-speed cut-off in all gears

across the entire pedal or throttle travel.

To increase driving comfort a ‘gentler’ cut-off is generally used when accele-

When the “Sport” button is active, a

rating and reaching the speed limiter

more dynamic accelerator pedal cha-

setting. In the process the throttle is

racteristic produces a more sponta-

continuously closed when approaching

neous engine response, underpin-

the limit range for speed. This conve-

ning the sporty character of this

nient control operation prevents an

function. This is achieved by means

abrupt cessation of the acceleration

of a “shorter conversion” between

process by the high-speed cut-off,

accelerator pedal travel and throttle

but provides the driver with no useful

angle. This means that the throttle is

information for shifting up.

opened further with the same accelerator pedal travel and selected Sport

The Sport Chrono function facilitates

Chrono function.

additional acceleration potential through the use of an abrupt engine

For safety’s sake, this Sport Chrono

speed cut-off by switching off indivi-

function is activated only after the

dual cylinders (injection and ignition) in

driver has released the accelerator

a rotating fashion just shortly before

pedal briefly or floored it.

the engine speed limit. When the “Sport” button is pressed, the abrupt cut-off in active in all gears for the manual gearbox (without Sport Chrono function only in 1st and 2nd gears). This Sport Chrono function further

27

2.11 Change intervals • Oil change from 20,000 km to 30,000 km / 12,000 miles to 20,000 miles

• Air filter change from 40,000 km to 60,000 km / 24,000 miles to 40,000 miles (modified filter element)

• Spark plugs from 80,000 km to 90,000 km / 48,000 miles to 60,000 miles (modified spark plug type)

• Poly V-belt

Figure 31: Comparison of high-speed cut-off in Normal and Sport mode

from 80,000 km to 90,000 km / 48,000 miles to 60,000 miles

Figure 32: Comparison of accelerator pedal characteristics

28

3 Transmission The new Boxster models feature a revised (5-speed) and a new (6-speed) manual gearbox. The familiar 5-speed Tiptronic S is available as an option on the Boxster and Boxster S.

3.1 Manual gearbox Figure 33: 5-speed manual gearbox

Figure 34: 6-speed manual gearbox

The Boxster is equipped with the

The 6-speed manual gearbox is also

3.1.4 Synchronisation

revised 5-speed manual gearbox as

available as an option for the Boxster

standard.

as a Sport package in combination with

All of the gears in the 5-speed and

The final drive ratio has been adapted

PASM. It will appeal to those customers

6-speed manual gearboxes use syn-

to the larger rear-wheel diameters.

who are looking for an uncompromising,

chronisers with a higher load-carry-

A new synchronization system has

very sporty drive. The combination of

ing capacity (implemented as a model

been introduced to increase shifting

6-speed gearbox and Porsche Active

improvement on the 2.7 litre Boxster

comfort.

Suspension Management permits faster

(986) in 11/2003). As on the new

lap times, for example, when the vehicle

Carrera the synchronisers for first

is driven at the limits of its performance.

and second gear have been given a

3.1.1 5-speed manual gearbox

The 5-speed manual gearbox has been

wear-resistant carbon coating.

specifically selected and tuned for use in the Boxster. The selected ratios, the increments of the gears and the low

3.1.3 Transmission ratios

While in the Boxster synchronisation of 1st gear is now performed three times

weight of the gearbox permit outstandSince the dynamic tire rolling circumfer-

instead of once and twice instead of

ence of the new vehicles was increased

once for 2nd gear, synchronisation of

by 5 % (to facilitate a 19-inch wheel),

1st and 2nd gears in the Boxster S

the vehicle ratio spread (transmission,

is now performed three times instead

axle transmission, wheel/tires) for the

of twice. Third through sixth gears are

The Boxster S is equipped with a newly

new models had to be adapted to en-

now synchronised twice instead of once.

developed 6-speed manual gearbox

sure attractive performance and high

as standard. The adaptation of the

driving dynamics.

ing performance.

3.1.2 6-speed manual gearbox

gears, their increments and the ratio

The benefit of multiple synchronisations is also used in the new gearboxes to

spread are geared to the high engine

The rear-axle ratio on the 5-speed

ensure a reduction in shift throw with

performance of the Boxster S.

gearbox has also been adapted.

the same shifting forces (in the appro-

The totally new concept ensures that

All of the ratios for the new 6-speed

priate gears).

a damaged gearbox can be fully re-

gearbox have been redesigned. These

paired instead of having to be replaced

designs result in a sporty setup for

as was previously the case, which signifi-

the new models and enables high per-

cantly reduces the maintenance

formance with optimum exploitation of

costs.

the engine torque and the maximum output.

29

Figure 35: Transmission ratio of the 5-speed manual gearbox

Figure 36: Transmission ratio of the 6-speed manual gearbox

30

3.1.5 Shifting and shift lever ratio

3.1.6 Transmission cooling

The proven cable-operated gearshift

As with the manual gearboxes of the

with two pull-push cables is used in the

previous Boxster series, transmission

new Boxster models also.

cooling in the new models is also performed via a direct air-heat exchange

A shift throw reduction of 26 % in the

at the transmission surface (convection).

5-speed manual gearbox (standard on

The surface is provided with cooling

the Boxster) and 15 % in the 6-speed

gills to this end. Cooling is supported

manual gearbox (standard on the

by effective air routing with a defined

Boxster S, optional on the Boxster) has

air inlet on the front underbody panelling

been achieved on the new Boxster mod-

and a modified ventilation frame.

Figure 38: Tiptronic S selector lever

3.2 Tiptronic S

els while retaining the same ergonomic The tried-and-tested 5-speed Tiptronic

characteristics by moving the deflection point on the shift lever. The significant increase in the efficiency of the syn-

3.1.7 Dual-mass flywheel and clutch

S transmission with further optimisations is available as an option on the new Boxster models. The torque and per-

chronisations has allowed the shifting forces at the gearshift to be kept the

The proven double-mass flywheels for

formance potential of this gearbox

same or even reduced. On top of this

damping vibrations in the transmission

covers even the higher requirements of

play in the shift module under the shift

caused by the engine have been re-

the new engines.

lever has been reduced, resulting in

tained in their familiar design for the

a more precise gearshifting gate.

new models.

The new Tiptronic S system has been

Both Boxster models use the same shift

The new engines use the familiar single-

modified and adapted in comparison

console.

plate dry clutches. In accordance with

with the MY04 version.

the change of materials in mid-2003, the clutch linings are lead-free. The contact pressure in the Boxster S has been adapted to the engine torque and the hub of the clutch plate adapted to the new transmission input shaft. However the Boxster S now also uses a plastic plate to optimise friction when the clutch is actuated. These measures have increased the durability of the clutch.

Figure 37: Shift lever of the Boxster

31

The constant ratio (spur-gear drive + axle drive) has had to be adapted (by 8.8 % on the Boxster and 4.8 % on the Boxster S) to compensate the 5 % increase in the tire diameter. This sporty ratio spread enables the new models with Tiptronic S gearbox to reach their top speed quickly. The shift pressures have been adjusted to adapt to the transmission of the higher power and to retain the high level of shifting comfort. The setup has been further optimised with regard to uphill and downhill recognition (optimum performance is ensured by driving as long as possible in

Figure 39: Tiptronic S gearshift strategies

low gears when going uphill or downhill) and the height function. The shift points for sporty driving have also been optimised. These improvements have enabled the automatic oil change interval to be extended to 180,000 km / 120,000 miles.

Figure 40: Boxster Tiptronic S ratios

Figure 41: Boxster S Tiptronic S ratios

32

4 Chassis

In addition to the basic chassis, a

strength and low component weight

further option is offered for the Boxster

were important criteria in the redesign of

The main objective in the tuning of

models: the PASM chassis (Porsche

the components. As part of this, the

the chassis has been to increase per-

Active Suspension Management, incl.

track width of the front axle has been

formance, i.e. to directly translate

lowering by 10 mm/0.39 in). This chas-

increased by up to 35 mm/1.38 in in

the increased engine output into faster

sis combines variable characteristics

comparison with the previous model de-

lap times.

and sporty characteristics.

pending on the wheel/tire combination.

The chassis of the new Boxster models

This measure, together with the larger

have the same design as the previous

and wider tires, further reduces the

models, but have been significantly re-

4.1 Front axle

tendency of the body to tilt, particu-

vised and reworked. A wider track, new

larly when the vehicle’s performance is

kinematic and elastokinematic design,

The front axle of the new Boxster mod-

exploited to the full, thereby improving

new and larger wheel/tire combinations

els is based on the proven concept

support against transverse forces. The

and the reduced weight of individual

from the previous model, however many

routing of cooling air to the brake sys-

components, among other improve-

of its details have been adapted to

tem and the driving comfort has also

ments, give the new Boxster models

a significantly higher performance

been improved.

more generous safety reserves and

potential.

much sportier performance, without affecting driving comfort.

For example, the wheel suspension still comprises a spring strut and a de-

The improved performance of the

tached trailing link/control arm

new tire generation in particular en-

arrangement. This concept ensures

ables considerably higher forces to be

very precise wheel guidance in com-

transmitted to the street with the new

bination with a high degree of rolling

Boxster. This results in increased re-

comfort.

quirements for the chassis as a whole

Some components of the front axle

and particularly for the axle compo-

have been redeveloped to take account

nents.

of the increased performance and to further increase crash safety. High

Figure 42: Boxster S chassis (with PASM)

33

The following modifications have been made:

• Wheel bearing:

• Trailing link/control arm mount:

Reinforced wheel bearings with a

The previous conventional rubber-

larger diameter are used in order to

bonded bushing which connected the

reliably transmit the increased transfer

trailing link and control arm has been

The front-axle cross member has been

forces generated by the higher per-

replaced by a hydraulic mount to

newly developed for the Boxster. The

formance. They offer the major advan-

increase driving comfort. This new

design has been completely re-

tage of firmer wheel guidance in the

mount ensures that vibrations caused

vised based on crash requirements,

face of lateral forces and therefore

by disruptive forces (disruptions as a

particularly in an offset crash. At the

contribute to the extremely precise

result of unevenness on the road,

same time, the cross member has

driving behaviour.

wheel imbalances) are suppressed

been widened by 15 mm/0.59 in

In addition, the wheel bearings now

more effectively and therefore fewer

on each side. This has allowed the

also adopt the function of the former

disruptive vibrations are transmitted to

axle attachment points to be moved

ABS pulse rings. They are fitted with

the steering. Steering precision re-

out further, which results in an in-

a so-called multipole seal. This is a

mains at the highest level.

crease in track width of 24 to

seal with a magnetised layer, which

35 mm/0.95 to 1.38 in depending

generates the signal impulses for the

on the wheel/tire combination.

ABS rpm sensors.

• Front-axle cross member:

• Pivot bearing: The design of the front-axle pivot bearing has been modified to optimise the supply of cooling air to the brake. This measure, together with an enlarged brake air deflector which clips into the trailing link, has resulted in an improvement in brake cooling. The fact that the front-axle pivot bearing is now cast as a hollow instead of a solid has enabled both a reduction in weight and an increase in component strength.

Figure 43: Boxster front axle

34

4.2 Steering system The new Boxster generation uses hydraulically-assisted rack-and-pinion steering with variable steering ratio. The idea behind using this steering system has been to further increase the agility of the vehicle, particularly on routes with a lot of corners, while at the same time retaining the high level of driving stability at very high speeds.

The ratio around the center position, i.e. for small movements of the steering wheel, remains similar to that of the

Figure 44: Steering

previous model. As a result, the vehicle remains very smooth at high speeds.

adjustment, the steering wheel is now al-

Taking into consideration the latest

The steering ratio becomes increasing-

so height-adjustable by 40 mm/1.58 in

crash requirements, all rotating com-

ly more direct with steering wheel

(measured in extended state). This pro-

ponents of the steering system (includ-

movements of more than 30° to

vides the driver with considerably

ing the upper and lower steering shaft)

240° (approx. 1/8 to 3/4 steering

more options for adjusting the steering

are now made from aluminium to opti-

wheel revolution). This is achieved

wheel according to his or her specific re-

mise weight. The adjustment mecha-

through a gear rack with variable tooth

quirements, thereby ensuring that an op-

nism also comprises magnesium and

pitch. The steering wheel revolutions

timum seat position is found. It also

aluminium die-cast. This consistent

from stop to stop have thus been re-

makes it easier for taller drivers to get

use of light-weight construction tech-

duced from 2.98 on the previous model

in and out. The lever for locking the

niques has allowed the overall weight of

to 2.62 on the new model. This results

steering wheel in the selected position is

the steering system to be kept at a

in significantly greater agility when

located underneath the steering column.

good level, despite the additional adjust-

driving on routes with a lot of corners

ment mechanism.

and particularly in tight corners. For ex-

The steering lock is now electrical.

ample, it also improves handling when

This component is part of the networked

turning in city traffic. In this case, the

immobiliser system and offers in-

steering response is much more sponta-

creased anti-theft protection. It has

neous. Parking is also easier since

also increased convenience since the

the greater the steering wheel angle rel-

electric steering wheel lock detects

ative to the steering around the zero po-

whether the steering cable is strained

sition, the harder the wheels turn. The

when the wheel is locked. When the igni-

turning circle of 11.1 m/36.4 ft is al-

tion key is turned in the lock, a possible

so similar to the previous model (10.9

strain is detected and reported to the

m), despite the larger wheels which re-

driver via a text message (“Unlock steer-

quire more space inside the wheel hous-

ing”) in the display in the instrument

ings.

cluster. The driver can then respond

Figure 44: Steering

by turning the steering wheel slightly to release the strain. This prevents the

A further new feature is manual steer-

ignition key “sticking” when turned in

ing wheel height adjustment. In addi-

the lock with locked steering.

tion to the existing 40 mm/1.58 in reach

35

4.3 Rear axle

• Wheel carrier: The aluminium wheel carrier has also

Both the rear axle and the front axle of

been newly developed. The swing

the new Boxster models are based on

lever has been enlarged to increase

the proven concept from the previous

the toe-in rigidity, which enables

model, however many of its details

more precise wheel guidance.

have been adapted to a significantly

The camber thrust rate has also been-

higher performance potential.

increased by 30 %. One of the main

The main objective of redesigning the

development goals in relation to the

rear axle components has been to in-

wheel carrier has been weight reduc-

crease transverse rigidity while at the

tion. For that reason the wheel carrier

same time reducing weight through

is now hollow instead of solid, which

the consistent use of light-weight con-

reduces its weight by 20 % or

struction techniques. The rigidity of in-

1.2 kg/2.2 lbs.

dividual axle components has also been increased. This, together with the new

• Suspension strut:

tire generation, has enabled higher

The twin-pipe damper features a

lateral accelerations overall to be

larger external pipe than the previous

achieved. It has also increased driving

damper. This, together with a larger

comfort at the rear axle.

guidance length for the damper, has permitted an improvement in

The following component modifica-

the camber thrust rate and the

tions have been made:

response behaviour.

• Subframe: The side section of the support is now made from die-cast aluminium and is consequently lighter (the reduction is weight is approx. 1 kg/2.2 lbs). The kinematics in combination with the tie rod position have also been optimised to facilitate the responsiveness of the chassis and more agile performance. The installation of a new diagonal strut made from aluminium extruded profile, which is closed underneath unlike on the previous model, improves the torsional rigidity and the Cd /CA value at the rear axle. The cross member panel is made from aluminium for reasons of weight savings and is designed to facilitate better ventilation of the transmission.

Figure 45: Boxster rear axle

36

4.4 Brake system 4.4.1 Boxster operating brake The basic principles of the powerful brake system have been retained from the previous Boxster model, however it has been further improved to take account of the technical advances and increased performance of the new models.

Black anodised aluminium 4-piston monobloc fixed calipers are used on all four wheels. The internally ventilated

Figure 46: Boxster brake system (rear axle)

Figure 47: Boxster S brake system (rear axle)

their diameter at the rear axle has

The Boxster engines employ a mechan-

Ventilation has been further im-

been increased by 7 mm/0.28 in in

ical vacuum pump instead of a con-

proved in comparison with the previous

comparison with the previous model.

ventional sucking jet pump to provide

model. The new design of the front-

the vacuum for the brake booster.

axle wheel carrier, a 30 % larger

The boost factor in the brake booster

The pump is driven in tandem configura-

brake air deflector and an optimised

has also been increased by 17 %.

tion together with the oil extraction

underbody lining result in more air be-

This means that less actuating force

pump of the right cylinder head (bank 2,

ing directed to the brake discs for more

is needed when braking and that the

cylinder 4) by the exhaust camshaft of

effective cooling. The ventilation ducts

response behaviour is even more

the right cylinder bank (bank 2, cylinder

and the hole pattern boost this effect.

direct than before.

4 – 6). This design enables a high and

brake discs are now perforated and

constant level of vacuum supply and

The result is a very stable brake

subsequent effective brake boost even

system with a spontaneous response

when the most unfavourable under-

and low operating forces, whose

lying conditions apply, e.g. low exter-

performance significantly surpasses the

nal air pressure at high altitudes, and in

vehicle acceleration values, i.e. the maxi-

highly dynamic driving involving a high

mum braking power is a multiple of the

proportion of full-load operation, e.g. on

maximum drive power.

race tracks.

37

4.4.2 Boxster S operating brake

4.4.3 Porsche Ceramic Composite Brake (PCCB)

Due to its increased performance, the

The familiar evolute shape of the inner cooling ducts has been modified to increase the ventilation effect of the

Boxster S uses a brake system with

The Porsche Ceramic Composite Brake

rotating disc. This results in even higher

extra power boosting.

(PCCB) is available as an option for the

air throughput and thus even better

Essentially, this is based on the brake

first time for the new Boxster S.

brake cooling.

The PCCB provides a further in-

Abrasion resistance, particularly under

The front axle is fitted with power-

creased performance in comparison

high loads, has been significantly in-

boosted aluminium 4-piston monobloc

with the already excellent standard brake

creased by optimising the fibre rein-

fixed calipers that are also larger

system of the Boxster S. The main

forcement.

than on the basic Boxster model. The

advantages of the PCCB are:

system of the new 911 Carrera.

calipers at the front and rear axle are painted red to distinguish them from

For the customer these improvements • Faster response

mean increased performance and a

the calipers on the basic model.

much longer service life of the brake • Very high fading stability thanks to

Combined with the efficient ventilation

consistently high friction values

of the brakes (see the section on the Boxster operating brake), the generously sized brake system of the Boxster S,

• Large safety reserves, even under extreme loads

with 4 mm/0.16 in thicker brake discs as well as 20 mm/0.79 in larger brake

• Reduction in the rotating mass and

discs at the front, provides excellent

unsprung weight compared to grey

stability and constantly high decelera-

cast iron brake discs of the same type

tion values. This effect is also support-

and size

ed by the 17 % increase in the boost factor in the brake booster. The brake system is perfectly matched to the

• Very long service life according to respective conditions of use

Boxster S in every regard and thereby makes an important contribution to the

• Absolutely corrosion-free

excellent performance of the vehicle. The PCCB is the result of years of experience on the part of Porsche as a technological leader in the field of brake systems. The ceramic brake discs used in the Boxster S have been further optimised in comparison with the previous version used in the 911 (996). The most important changes concern the shape of the inner cooling ducts and the material composition.

38

system.

The ceramic brake discs with a di-

A further decisive advantage of the

a grey cast iron brake system – will

ameter of 350 mm/13.79 in together

PCCB is its long service life. Abrasion

increase sharply. After use on the

with the newly developed brake pads

of the ceramic brake disc is exceptional-

circuit, as in the case of high-per-

ensure extremely high and, above all,

ly low due to the disc’s extreme surface

formance steel brakes, the brakes will

constant friction values during decelera-

hardness in comparison with a grey cast

need to be checked by a mechanic

tion. Assisted by aluminium 6-piston

iron brake disc. The new brake pads

and components may need to be

fixed calipers at the front axle and alu-

also have a long service life. However

replaced.

minium 4-piston fixed calipers at the

wear on the components of the brake

rear axle – both in monobloc design –

system, particularly pads and brake

As a technical innovation, the PCCB

the braking response is even faster

discs, is very much dependent on how

offers a high level of quality, safety

and more precise with considerably

the vehicle is driven and the conditions

and driving pleasure, even under

reduced pedal force requirement.

of use and cannot therefore be ex-

extreme driving conditions, thanks to

pressed in the form of a guaranteed

its characteristics of reducing the

mileage.

unsprung weight, its consistently high

The PCCB sets definite standards in the areas of weight, fading stability and responsiveness.

friction values and its low wear. As a result of its great fading stability and particularly its very low weight,

Like the grey cast iron brake discs of

the PCCB is ideal for use at high tem-

the Boxster/Boxster S, the ceramic disc

peratures and even for driving on the

is perforated and internally ventilated but

circuit. It is on the circuit or as a result

is only about half the weight of a grey

of similar extreme driving on normal

cast iron brake disc of the same type

roads that wear on the brake, and in

and size. Since this weight reduction

particular on the brake pads – as with

refers to the unsprung weight, as well as having a positive effect on the powerto-weight ratio and fuel consumption it actually improves driving behaviour with regard to handling, road holding and comfort.

The PCCB retains its excellent fading stability even under extreme loads to offer a high level of safety, particularly when braking from high speeds. The new brake system also exhibits excellent characteristics in relation to braking response with considerably reduced pedal force requirement.

Figure 48: Porsche Ceramic Composite Brake (PCCB) (front axle)

39

Figure 49: Boxster

Boxster

Boxster S

PCCB

Fixed-caliper brake with … pistons FA/RA

4/4

4/4

6/4

Pad area per brake pad (cm2/sq in) FA/RA

53.5/48 / 8.3/7.4

62/48 / 9.6/7.4

112/62 / 17.4/9.6

Brake discs: (Internally ventilated and perforated) Diameter x width (mm/in) FA/RA

298 x 24 / 299 x 20 / 11.73 x 0.94 / 11.77 x 0.79

318 x 28 / 299 x 24 / 12.52 x 1.1 / 11.77 x 0.94

350 x 34 / 350 x 28 / 13.78 x 1.34 / 13.78 x 1.10

Table 5: Overview of brake systems

40

4.4.4 Parking brake The main components of the parking brake have been retained from the previous model. It is integrated into the brake disc at the rear and is actuated via a control cable. The Boxster and the Boxster S now have the same parking brake which is larger than on the previous model.

A new feature – as on the 911 Carrera / 911 Carrera S – is the automatic control cable readjustment. The inevitable lengthening or slackening of the brake cable over time previously had to be corrected as part of the after-sales service. The control cable length compensation now takes place automatically, which reduces the maintenance involved and lowers costs. Readjustment of the brake in case of pad wear must be carried out as part of the normal after-sales service as before.

The handbrake lever has been modified to match the new interior design and as before is made of extremely light pressure-cast magnesium.

41

4.5 Porsche Active Suspension Management (PASM)

The PASM system comprises the follow-

A variable damping system with ac-

• Four map-controlled dampers with

ing components:

tive damper force regulation is avail-

continuously adjustable damping force

able as an option for the first time for

(each with one bypass valve)

the Boxster series. The newly developed “Porsche Active Suspension Manage-

• PASM control module

ment” (PASM) helps to do justice to the demands for a modern sports car chas-

Figure 50: PASM button in the center console

sis. The aim was to maintain the high

• Two acceleration sensors for detecting vertical movement of the body

comfort level of the standard chassis

excellent comfort as the standard

(one at the damper dome at the front

while increasing performance at the

chassis, while Sport mode provides

right and one at the rear left). Further

same time.

the sportiness and agility of a sports

signals such as lateral acceleration,

chassis. In conjunction with specially

steering angle, travel speed, brake

This conflict was resolved with the

developed software modules, the

pressure and engine torque are read

PASM, which combines two chassis in

PASM ensures excellent performance

in via the CAN bus.

one: one with equal measures of sporti-

and even greater driving safety in

ness and comfort and one entirely

extreme situations.

dedicated to sportiness for extreme

gramme (Normal or Sport)

driving. PASM makes two programmes

The function light in the button comes

available to the driver: “Normal“ and

on with the Sport setting. At the same

“Sport“, both are selected via a button

time a damper icon appears in the in-

on the center console.

strument cluster display together with the text “PASM Sport”. When the Nor-

In comparison with the standard chassis,

mal programme is re-activated, the

the vehicle with the PASM chassis lies

damper icon appears accompanied by

10 mm/0.39 in lower.

the text “PASM Normal”. The text and icon remain visible for 4 seconds and

Normal mode (the basic setting when

• One button for selecting the pro-

then automatically disappear.

the vehicle starts) provides the same

Figure 51: PASM control module

42

4.5.1 How PASM works PASM selects the required damper hardness for each individual wheel from a precisely co-ordinated map in both the Normal and the Sport programme. The possible damper settings range from comfortable to decidedly sporty. Both programmes, which overlap slightly in some areas, are additionally superimposed with five special software modules to provide the optimum damper settings for every driving condition.

The system automatically selects the

Figure 52: PASM damper characteristics in comparison with the standard chassis

appropriate damper hardness based on the PASM programme selected and

between the Normal and Sport maps

the driving condition identified.

allows the ideal damper setting to always be selected. The customer gets

The Normal programme offers com-

an “active sports chassis” which

fortable settings with low damper

automatically responds to the actual

forces. Special control algorithms in the

road surface and switches from a

PASM software modules enable the

hard, sporty damping setting to a com-

chassis to offer greater active driving

fortable range as necessary. PASM

safety in extreme driving situations,

switches back to the original character-

even with the Normal programme. To in-

istic as soon as the road surface is

crease driving safety at higher speeds,

smooth enough.

the dampers are automatically switched to a harder damper setting as speed increases.

The dampers switch to a hard characteristic when Sport mode is activated. This offers superior agility and excellent steering precision on uneven surfaces. If the system detects an uneven driving surface in Sport mode, it immediately switches to a softer characteristic to improve contact with the road surface. PASM selects the optimum damper setting for this driving condition from the Sport map. Since extremely hard damping is not always the ideal solution in every driving situation (depending on the driving surface, the vehicle may start to bounce or shift), the overlap

43

4.5.2 Software modules for special control algorithms PASM contains five software modules which are superimposed over Normal and Sport mode:

• Lane-change module: The damper forces at both axles are immediately increased in response to rapid steering movements, for example sudden evasive manoeuvres. This reduces body tilt and instability, thereby significantly improving vehicle control even in extreme

Figure 53: Boxster

situations. control and lateral-acceleration dam• Vertical-control module:

• Load-change module:

ping values is set. This happens if, for

The damper characteristics for

In the Normal programme, the dam-

example, the damping in the Sport

the front and rear axle are indivi-

per force is increased as soon as

programme was previously decreased

dually switched when accelerating

the vertical movement of the body, for

by the vertical-control module.

heavily, releasing the throttle or

example when driving over uneven surfaces, rises over a specific threshold

changing lanes. In Normal mode, the dampers are briefly switched to a

• Brake module:

value. This prevents body instability

PASM switches to harder damping at

harder damping setting in these driving

and therefore woolly driving beha-

the start of a braking operation to

conditions. This avoids excessive

viour.

reduce vehicle nose-dive when bra-

lifting or diving at the front of the

king (brake driving). The advantage

vehicle (“pitching”). In Sport mode, a

In the Sport programme, the damp-

of this is that it enables higher brake

softer damper characteristic is briefly

ing is slightly reduced automatically

forces to be transmitted to the road

selected if necessary to improve

as body movements increased. This

faster. It switches back to a softer

traction when accelerating, particular-

results in improved contact between

setting (this setting is different for

ly on uneven surfaces.

the road and the wheels and a

the front and rear axle) after a

noticeable increase in comfort.

specific amount of time. The result is improved road contact, and thus a

• Lateral-acceleration module: If specific, speed-dependent thresholds

shorter braking distance, particularly when braking on uneven surfaces.

for lateral acceleration are exceeded when cornering in the Normal programme, the damper force is increased by different, defined amounts for each side of the vehicle. This prevents vehicle instability and significantly increases driving precision. In the event of large vertical movements and high lateral acceleration coinciding, the higher of the vertical-

44

4.5.3 How the PASM mapcontrolled dampers work

The damping effect is provided by the oil

In the event of a system failure, the

in the damper flowing through an open-

valve automatically closes. PASM is then

ing when the vehicle moves. The smaller

in the hardest damper setting and thus

Conventional shock absorbers can-

(larger) the opening cross section, the

the safest mode from a driving dynamics

not actively adapt to changing driving

harder (softer) the damping.

point of view (fail-safe principle).

conditions. As such, the damper design always represents a compromise

With the PASM map-controlled

between comfort, sportiness and

damper, the oil can flow through an

loading state. Neither can they take

electrically actuated hydraulic bypass

into consideration the individual driving

valve as well as through the fixed

style.

opening in the main piston. The flow can be increased or reduced by opening and closing the valve via a slide, producing continuous adjustment of the damper force.

Extension

Extension

stage,

stage,

bypass

bypass

valve open,

valve closed,

comfortable

sporty

shock-

shock-

absorber

absorber

charac-

charac-

teristic

teristic

Compres-

Compres-

sion stage,

sion stage,

bypass

bypass

valve open,

valve closed,

comfortable

sporty

shock-

shock-

absorber

absorber

charac-

charac-

teristic

teristic

Figure 54: How the PASM dampers work

45

4.6 Porsche Stability Management (PSM) With the introduction of the new Boxster series, the Porsche Stability Management (PSM) has now been allocated as standard.

It includes the familiar functions ABS (anti-blocking system), ASR (anti-slip regulation), EDTC (engine drag torque control) and ABD (automatic brake differential). It offers very high active driving safety in manoeuvres involving extreme longitudinal and lateral


acceleration without affecting the typical Porsche agility and associated driving pleasure.

• The steering angle sensor previously

The system switch-off is indicated to the

mounted on the steering system has

driver via the PSM function light in

been replaced by the one from the

the instrument cluster and the indica-

The objectives in the development of

Cayenne for the sake of standardisa-

tor light in the PSM switch. A gong

the PSM for the new Boxster/ Boxster S

tion (Porsche carry over parts con-

also sounds and the text “PSM OFF”

were as follows:

cept). The new steering angle sensor

appears in the multi-function display

is located in the steering column

in the instrument cluster. The lights go

module. The ABS wheel speeds are

out and the text message “PSM ON”

ing distance, thereby securing

now determined using multipole seals

appears when PSM is switched back on.

Porsche’s position as a leader in the

directly at the wheel bearings instead

The text messages are displayed for

field of brake technology.

of conventional impulse rotors.

10 seconds, however they can be

• The new PSM helps to reduce brak-

acknowledged before this using the • The driver is to be allowed more

PSM can be switched off via a switch

freedom before PSM intervenes than

in the center console (PSM Off switch)

on the previous system, in particular

to increase driving pleasure. As before,

when PSM is switched off. To this end

ABD remains active when PSM is

the system, which is still activated by

switched off to ensure outstanding trac-

pressing the brake, is only to be acti-

tion when accelerating out of corners

vated in real emergency situations.

and on surfaces with different friction values.

• At the same time, the control comfort has been noticeably improved and the PSM system’s weight reduced.

Figure 56: PSM OFF button

46

on-board computer lever.

Limits of PSM:

• Reduction of braking distances:

While PSM is designed to maintain driv-

A reduction in braking distance has

ing stability and offer a significant im-

been achieved through the higher

provement in driving safety, it is by no

control quality of the PSM and the

means capable of changing the laws

optimised ABS setup in combination

of physics. In other words, the driver

with the new tires.

alone is solely responsible for all

The valves used in the previous PSM

manoeuvres, even when using PSM.

to regulate pressure in the ABS system were conventional switching valves which enabled regulation in

4.6.1 Properties of the enhanced PSM

defined, although not very precise, pressure stages. The new continuously adjustable linear solenoid

The revised and newly adapted

valves used allow virtually infinite

PSM is characterised by the following

and thus more precise regulation of

features:

the brake pressure. The result is a signification reduction in braking

• More agile setup/modified intervention

distance.

thresholds: PSM in the new Boxster offers more

• Increase in comfort:

individual freedom than before

Control comfort has been notice-

thanks to the further development

ably improved. PSM interventions

of its function logic. PSM deliberate-

with the new system are noticeably

ly waits until the last moment to inter-

smoother and more harmonious

vene, particularly at low speeds of up

thanks to enhanced control algorithms.

to around 70 km/h / 45 mph, enab-

Brake pedal pulsation with ABS has

ling more agile driving behaviour in

been reduced through the use of the

tight corners. Even when switched off

new linear solenoid valves. PSM con-

the driver is afforded more freedom

trol noises have also been signifi-

than was previously the case.

cantly reduced in comparison with

A new feature is that when PSM is

the previous PSM.

deactivated, control interventions by the system will only be executed

• Reduction in weight:

when heavy pressure is applied to

The introduction of the new PSM has

the brake pedal. To do this, ABS

permitted a significant reduction in

control must be active at one front

the system weight. As a result, the

wheel at least. This affords the sporty

hydraulic pre-charge pump including

driver more scope since gentle pres-

bracket and hydraulic connecting line

sure on the brake pedal will not result

is no longer required. The new PSM

in PSM intervention; the driver can

pump can now ensure the dynamics

therefore brake into corners without

required for the entire system (brake

the system intervening.

pressure build-up for PSM interven-

Drivers tend to apply more pressure

tions) on its own without pre-charging,

to the brake in emergency situations

which has allowed the system weight

which means that PSM can provide

to be reduced by 25 % (3.0 kg/

assistance when it is needed.

6.6 lbs).

47

4.6.2 Sport mode (Sport Chrono function)

acceleration. Increasing the ABS inter-

In line with Porsche’s safety philoso-

vention thresholds permits more neu-

phy, PSM remains available in the back-

tral braking into corners. In addition,

ground even in combination with Sport

A special Sport mode is available for

PSM permits more engine drag torque

mode and can be activated by pressing

the first time in PSM as part of the op-

when lifting the throttle. The result is a

the brake pedal. When Sport mode is ac-

tional Sport Chrono Package Plus.

more distinctive load change so that

tive and PSM is switched off, greater

This Sport mode facilitates a sportier

the vehicle can be positioned more easi-

force must be applied to the brake pedal

drive and increases driving pleasure

ly in corners, thereby permitting more

to activate it. This allows the driver to

by allowing the driver to switch functions

dynamic steering.

move the vehicle with far greater overall

in PSM via the Sport button.

agility in extreme driving situations than The driver can increase vehicle agility

when PSM is switched off and Sport

An increase in the minimum triggering

even more by switching off PSM

mode is not active.

level for ASR in Sport mode affords the

when Sport mode is active.

vehicle more longitudinal dynamism

The ABS setup has been made even

when accelerating out of corners. As a

sportier, a refinement that is particular-

result greater slip is permissible at the

ly noticeable when braking into corners.

drive wheels during throttling and notice-

The new, less stability-oriented ABS set-

able rear drift, particularly on surfaces

up permits more agile behaviour com-

with low coefficient values, is permissi-

bined with higher braking deceleration

ble without jeopardizing driving safety.

when cornering.

The thresholds for PSM intervention

Load-change responses are also

have also been increased. This enables

moderated less so that the vehicle can

a greater deviation between the desired

be “steered” more using the accelerator

and actual direction of movement of the

pedal. ABD is retained in its customary

vehicle before PSM intervenes. This

form for optimum traction.

makes the vehicle more agile in manoeuvres involving extreme lateral

Figure 57: Boxster

48

PSM off

PSM is active,

PSM is deactivated,

basic condition when vehicle starts

but can be re-activated by applying the brakes, PSM intervention is permitted if the ABS control threshold is exceeded at one front wheel at least

Sport mode

PSM is active

PSM is deactivated,

on

with the following Sport functions:

but will be re-activated if the brakes are applied with force, PSM intervention is permitted if the ABS control threshold is exceeded at both front wheels; the overall effect is one of increased sportiness

Sport mode off

ILI

• More longitudinal dynamism thanks to later intervention of ASR

TY

PSM on

AG

• More lateral dynamism thanks to later intervention of PSM • Greater agility when braking into corners thanks to later intervention of ABS

• Slightly reduced load-change compensation for dynamism when steering into corners

Table 6: Increasing vehicle agility using PSM and Sport mode

49

• Even more agility when braking into corners thanks to a less stability-oriented ABS setup which allows greater deceleration when cornering • Significantly reduced load-change compensation for more dynamism when steering into corners

4.7 Wheels and tires

Three 19-inch design variants are offered as an option for both the

4.7.1 Wheels

Boxster and the Boxster S. They have a size of 8J x 19 at the front axle and

To coincide with the introduction of

9.5J x 19 at the rear axle:

the new Boxster series the wheels have been restyled and made larger.

The 19-inch Carrera S wheel is

The larger wheel/tire dimensions

derived from the standard Carrera S

have been specially developed to fur-

wheel and combines the Carrera design

ther increase performance. The

with Boxster-specific dimensions.

wheels have been designed to appear flush with the car’s skin.

The 19-inch SportDesign wheel is characterised by 15 fine-mesh spokes.

For the first time all wheels have been

The delicate styling delivers a striking

manufactured using the flow-forming

race-car look.

process. This is a light-weight construction technology which reduces

The 19-inch Carrera Classic wheel

weight by rolling out the rim well.

in turn is an elegant wheel. Its 5-spoke design is very slender and allows for a

The Boxster now has a 17-inch wheel

good view of the brake. This deliberately

(previous Boxster model: basic 16-inch

reveals the technology for all to see.

wheel) with a size of 6.5J x 17 at the front axle and 8J x 17 at the rear axle as standard. The 5-double-spoke design lends the 17-inch Boxster wheel a very dynamic appearance.

The Boxster S is fitted with an 18-inch wheel as standard. The 18-inch Boxster S wheel has a size of 8J x 18 at the front axle and 9J x 18 at the rear axle. Its appearance is characterised by 5 very striking spokes which split into 2 narrow ribs at the end.

Figure 58: 17-inch Boxster II wheel

Figure 59: 18-inch Boxster S wheel

Figure 60: 19-inch Carrera S wheel

Figure 61: 19-inch SportDesign wheel

Figure 62: 19-inch Carrera Classic wheel

50

4.7.2 Tires A new tire generation with larger rolling circumferences has been developed for the new Boxster series to complement the new wheels. The main objective in the redevelopment of the tires has been to achieve a significant improvement in performance – in short to address the sportier orientation of the Boxster and Boxster S. The tire circumference has been increased by 2.5 % at the front axle and 5 % at the rear axle. The larger rolling circumference increases the side-wall height/tire width ratio in comparison with

Figure 63: Tire characteristics

the previous model to guarantee an appropriate level of comfort despite the

These improvements have primarily

larger wheels. The tire widths at the

been facilitated through the special tire

rear axle have been increased to

rubber mixture and the new tread

235 mm/9.26 in with the 17-inch tire

design. However the choice of 17-inch,

for the Boxster/Boxster S (previous

18-inch or 19-inch tire (Boxster) and

model: 225 mm/8.87 in with 16-inch

18-inch or 19-inch tire (Boxster S)

tire) and to 265 mm/10.44 in with the

also delivers noticeably different per-

18-inch tire for the Boxster S (previous

formance.

model: 255 mm/10.05 in with 17-inch tire), while the tire widths at the front

The omission of the 16/17-inch basic

axle have been increased to 235 mm/

tires from the previous model means

9.26 in with the 18-inch tire for the

that the new 17/18-inch summer

Boxster S (previous model:

tires now fulfil the role of the comfort-

205 mm/8.08 in with 17-inch tire).

oriented tire. They offer a high level of sporty handling with very good driving

The new tires have permitted a further

comfort. The 19-inch summer tire

noticeable increase in the amount of

replaces the previous 18-inch tires

force that can be transmitted both in

with respect to sportiness and agility.

the longitudinal and transverse direc-

It offers a substantial increase in per-

tion. This results in a high level of

formance.

agility and, at the same time, driving safety. The new tires, and particularly the 19-inch tires, have permitted a reduction in the braking distance.

51

4.7.3 Run-flat systems

4.8 Tire pressure monitoring system (RDK)

The new Boxster and Boxster S do not have a spare wheel or a jack.

A tire pressure monitoring system

Instead, they are equipped with a tire

(RDK) will be available as an option

sealing compound and an electronic

for the new Boxster series from MY 06.

compressor.

The RDK offers a significant improve-

The introduction of the tire sealing com-

ment in safety by continuously

pound means that most damage can

monitoring the air pressure of each

be handled without having to go to the

tire. The system gives the driver an ear-

trouble of changing the damaged tire on

ly warning of a pressure deficiency

the spot. Small punctures such as

within the tire, creeping reduction in

caused by a nail or screw can be tem-

pressure caused by diffusion or even

porarily repaired by filling them with the

sudden pressure loss in the tires. It also

tire sealing compound, thereby enabling

does away with the need for regular,

the vehicle to be driven at a reduced

frequently very tedious, air pressure

speed (up to max. 80 km/h / 50 mph)

checks. A further advantage is that hav-

to the nearest Porsche Centre without

ing the correct air pressure cuts down

damaging the wheel in question or the

on tire wear (a deficiency in pressure

vehicle.

of 0.3 bar/4.41 psi can reduce the serv-

The omission of the spare wheel and

ice life of tires by up to 25 %). A defi-

jack has permitted a reduction in

ciency in pressure also results in in-

weight of around 10 kg/22 lbs.

creased fuel consumption.

A 17-inch spare wheel with a size of 185/60 is used in countries where the legislation generally stipulates the provision of a spare wheel (e.g. Brazil, Israel, Saudi Arabia and Virgin Islands). It is stored in the rear luggage compartment. The spare wheel should only be used to continue driving to the nearest Porsche Centre at a maximum speed of 80 km/h / 50 mph.

52

5 Body 5.1 Body-in-white without doors and handles The Porsche body-in-white is still executed as a light-weight design with high strength and ultra high strength steels. This concept ensures excellent rigidity and passive safety combined with low weight. The purpose of redesigning the body-in-white of the new Boxster series was to increase torsional and flexural rigidity in compari-

Figure 64: Body-in-white

son with the previous model and also to further improve crash safety in a

The spot welding/bonding method

The tailored blanks technology used

frontal or offset crash (frontal crash with

used to join the side sections and the

in the rear side members of the previous

head-on collision on one side of the vehi-

floor assembly and the redesign of the

986 model also feature in the front side

cle). A further aim was to provide the

joint areas (A-pillar/sills) has further

members of the 987. Tailored blanks

vehicle occupants, and particularly taller

increased the torsional and flexural

are pressed panels in which sheet steels

occupants, with more space. Finally the

rigidity of the body-in-white (torsional

made of different steel grades and sheet

improved joint lines are intended to con-

values increased by 9 % while flexural

thicknesses are laser-welded together.

vey an even greater impression of quality.

rigidity rose by 14 %).

They allow the vehicle weight to be reduced and crumple zones to be

These improvements have been

The bulkhead cross member in the

achieved with the following main

front of the vehicle has been complete-

changes in particular:

ly re-engineered. It is now made of

Together with the front side members,

maximum strength steel (Boron 02)

the bulkhead cross member in the

and is produced in a new manufacturing

middle tier ensures very high resist-

process. This has allowed the cross

ance.

• Use of the spot welding/bonding method

defined.

section to be matched to the available • Redesigning of the joint areas (A-pillar, sills)

• Use of a new bulkhead cross member made of boron steel

• Repositioning of the pedals

space and optimisation of the

The use of the Porsche mounting-

footwell space. The reduction in the

point concept, in which special refer-

cross section has also allowed the an-

ence points precisely define the arrange-

chorage for the pedals and hence the

ment of the individual body parts in

pedals themselves to be moved for-

relation to each other, has permitted a

wards by 10 mm/0.39 in. The clutch

further improvement in production

pedal has been moved forwards by

precision.

15 mm/0.59 in to improve ergonomics. • Use of tailored blanks for the front side members

This provides taller drivers with more

The associated process reliability guar-

legroom and allows them to find an

antees uniform joint lines throughout

optimum seat position.

the body.

• Integration of a further load path at the level of the upper door trims

The increased rigidity of the cross member and the improved anchorage have

• Use of the Porsche mounting-point concept

significantly reduced possible footwell intrusion in the event of a crash.

53

5.2 Doors/lids

The luggage compartment lids of the new Boxster and Boxster S has been

The doors have been redesigned in the

constructed as an aluminium shell to

following areas in comparison with the

reduce weight. This has resulted in a

previous model with the objective of

weight saving of approx. 3 kg/6.61 lbs

further improving crash safety:

at the rear and approx. 6 kg/13.23 lbs

The so-called upper load path has

at the front, or a reduction of 33 % and

been optimised to improve the

43 % respectively.

strength of the passenger cell in a frontal or offset crash. The upper load path above the door very effectively distributes the energy introduced into the body in a front crash between the front and rear of the vehicle. To this end, the upper area of the door has been reinforced through an additional profile sheet made from steel. It is further reinforced by an optimised side section structure in the event of a crash. Like the new 911 Carrera, the new Boxster is also fitted with the new bowtype handle.

Mild Steel Tailored Blanks High Strength Steel Ultra High Strength Steel High Strength Austenitic Stainless Steel Aluminium

Figure 65: Body-in-white with doors and lids

54

5.3 Roll-over bar The newly developed roll-over bar is now higher and further back. It is made of austenitic stainless steel, a special stainless steel alloy that offers maximum strength, and is manufactured using IHPF technology (internal high-pressure forming). This new manufacturing method and an optimised design have permitted a 30 % increase in strength. These measures combined with the new seats and their higher headrests have permitted a further improvement in the already impressive passenger sur-

Figure 66: Interior

vival space of the previous model.

5.4 Bumper system

past” the impressions which form a starshaped narrowing. This process re-

The proven bumper system has been

duces energy and therefore also

enhanced and improved.

minimises intrusion into body parts and

For example the area of the impact

overall deformation of the front of

elements on the front bumper has

the vehicle.

undergone substantial modification. The

As well as the impact element, the

objective of this modification was to

cross member in the front bumper has

increase protection for the body-

also been reinforced for better crash

in-white in the front of the vehicle at

behaviour.

low impact speeds. This is important for a favourable insurance classification

The rear bumper concept has been

(comprehensive).

retained from the previous model and adapted to the new rear section.

Improvement in this area has been achieved through the use of new, ener-

The towing lug, which is supplied in the

gy-absorbing impact elements with

tool kit, can be screwed into the front or

a stroke of 50 mm/1.97 in. These im-

rear cross member in the bumper as be-

pact elements now consist of two tubes,

fore should the need arise. The thread

one inserted into the other, instead of

cover now acts as a small rocker and

just one tube as was previously the case.

can be removed without tools simply by

At the same time they are now secured

pressing on the lower section.

to the front body cross member using three threaded connections instead of two. As a result they are less sensitive to oblique impact.

The outer, thicker-walled tube is equipped with specially defined impressions. In a crash, the inner tube is pushed into the outer one. In doing so it must “push

55

5.5 Front end

The headlight washer system was pre-

lower repair costs in the event of the

viously integrated in the headlight mod-

front apron having to be repaired.

The front ends of the new Boxster mod-

ule. On the new Boxster it is integrated

els have been completely redesigned.

directly in the front end.

The Boxster S again features an addi-

In addition to a new styling which

tional central air inlet behind which an

ensures optimum aerodynamic and

additional radiator in vehicles with

thermodynamic conditions at the

Three different licence plate holders

Tiptronic S ensures an even heat bal-

front of the vehicle, the following

tailored to the different licence plate

ance for the engine. This opening is cov-

changes have also been made:

shapes together with the necessary

ered by a trim on vehicles with manual

screws are available as an assembly kit

gearbox.

• Integration of additional headlights (fog light/marker light)

for the various regions (Europe/USA/ export). The holders can be attached directly to the front end. Two discreet

• Integration of the headlight washer system

centring aids are provided for this purpose. The conspicuous screw points are omitted for countries without a licence

• New fastening concept for the licence plate (that needs no mounting

plate at the front to maintain the continuous smooth surface of the front end.

holes in the trim) The so-called zero-joints concept has • Introduction of the zero-joints concept

been developed to achieve a more harmonious styling of the transitions to the body. This is mainly facilitated by the

The front end houses one-piece light

Porsche mounting-point concept with fur-

modules (front lights) containing the

ther reduced component tolerances

fog light and position light above the

used in the new series. Overall the at-

side air inlets.

tachment of the front end to the body has been simplified through the substitution of clips for threaded connections. This ensures shorter repair times and


56

5.8 Side air inlet The air inlets integrated in the rear side section with their new, dynamic look significantly improve the ventilation of the engine compartment.

The air intake snorkel of the air cleaner housing is still located behind the opening on the left-hand side (in the direction of travel). A new feature is an efficient convoluted system, not connected to the body, which removes water and particles from the engine intake air. The engine compartment scaveng-

Figure 68: Boxster S (with ParkAssist)

ing blower draws the cooling air into

5.6 Rear end

5.7 Rear spoiler

the engine compartment via the opening on the right-hand side.

The rear end, like the front end, has also

The integrated electrically extendable

been redesigned to take account of

rear spoiler has also been restyled

The air intake grilles as well as the

aerodynamic and thermodynamic re-

and as before is executed as a plastic

frame are titanium-colored for effect.

quirements. The following changes have

construction with aluminium frame.

been made to the rear end:

The spoiler extends at approx. 120 km/h / 75 mph to reduce lift

• Introduction of the zero-joints concept

coefficients at the rear axle, thereby increasing driving stability. Since aerodynamic forces are rather less important

• Optimised integration of the optional parking sensors

at low speeds, it retracts at speeds below approx. 80 km/h / 50 mph to show off the classic lines of the Boxster to

• The override bumpers prescribed

their best advantage.

for the USA have been matched to the exterior color and integrated in the trim.

Figure 69: Rear spoiler

Figure 70: Side air inlet

57

5.9 Tank

compartment area (previously in the front right wheel housing). This means

The filling volume of the tank is un-

that the complex systems of lines with

changed at 64 litres/16.9 US gal. As be-

integrated valves previously needed with

fore, the tank is filled via a filler neck

the old two-chamber active carbon filter

over the right-hand front wheel. Similarly

to comply with the strict regulations in

there are still two tank designs to comply

the USA are no longer required. The

with different country-specific require-

filter is part of the ORVR system (On

ments: one RoW variant and one USA

board Refueling Vapor Recovery) pre-

variant.

scribed in the USA. ORVR means that petrol vapours are routed via the active

Apart from some small details, the RoW

carbon filter both when driving and when

tank has been taken directly from the

refuelling and then returned to the en-

previous Boxster. Porsche’s many years

gine for combustion. This is necessary

of experience with the tank system

since petrol pumps in the USA do not

used have enabled them to optimise it

extract fuel vapours. A new OBD II unit

further. Accordingly the current model

(On Board Diagnosis) for leakage diag-

does not include a fresh air line for

nosis is integrated in the active carbon

the active carbon filter. It used to run

filter. This unit can detect holes as small

from the active carbon filter mounted in

as 0.5 mm/0.02 in (previously 1 mm/

the front right wheel housing back to the

0.04 in) in the fuel system.

engine compartment. Fresh air is now taken in directly via a water separator at the filter housing. The bleeder valve mounted in the area of the fuel filler neck has also been replaced by a pressure holding valve integrated directly in the vent line.

The tank system for the USA has been totally redeveloped. As part of this the Boxster, like the new 911 Carrera/S, is now fitted with a fuel pump with a higher delivery capacity. Instead of being made from a conventional, highly leakproof polyethylene, the tank now has a special six-layer structure with different layers consisting of polyethylene, bonding agents and a very effective diffusion inhibitor. This further reduces hydrocarbon emissions over the long term.

The tank ventilation system has been considerably simplified through the use of a new four-chamber active carbon filter. This is now housed in the luggage

58

5.10 Luggage compartments

only fitted with a cover for the brake

metal edges which were previously visi-

fluid reservoir including the brake

ble are now neatly covered. The choice

unit. Vehicles with a CD autochanger,

of material for the trim and the manufac-

Sound Package Plus or Navigation and

turing process ensure a feeling of quali-

The omission of the spare wheel, which

all USA vehicles have a large full trim

ty. The materials used are particularly

was previously housed near the bulk-

that covers the entire bulkhead area. (In

scratch-resistant plastics that are in-

head, and the new bulkhead cross mem-

the case of USA vehicles, the prescribed

jected in a two-component technique

ber in the body-in-white have facilitated

active carbon filter is also mounted un-

(i.e. where a harder main part has a soft-

a redesign of the luggage compart-

derneath this trim.) A separate flap on

er sealing lip sprayed onto it). The seal-

ment.

the left (in the direction of travel) pro-

ing lips permit a clean transition among

vides access to the brake fluid reservoir

the individual parts and between the indi-

for checking the brake fluid level.

vidual parts and the body.

5.10.1 Front luggage compartment

This redesign has enabled the luggage compartment volume to be in-

The redesign of the front lock sur-

creased by approx. 20 litres/0.7 cu ft

An emergency release inside the lug-

round with defined water drain open-

to approx. 150 litres/5.3 cu ft.

gage compartment for the luggage

ings results in considerably less soiling

compartment lid has been specially

of the trim than before. The cover pack-

A new trim concept has been devel-

developed for USA vehicles (Trunk En-

age ensures an aesthetically appealing,

oped to enhance the overall appearance

trapment). This device, required by legis-

high-quality appearance.

of the luggage compartment. In addition

lation in the USA, allows a child who has

to new, large-area trims on the in-

accidentally become locked in the lug-

side of the luggage compartment, it

gage compartment to open the lid from

also includes full trim on the areas

the inside. The handle for the release is

around the luggage compartment

to the front (in the direction of travel)

up to the lower frame of the windscreen

near the right-hand side member.

(cross panel, side section and radiator tank trim). This gives the luggage

The new wing flange and radiator

compartment a clear structure and

tank cover ensures that screws and

makes it feel extremely tidy.

For example, the audio amplifier (optional), the tire sealing compound and compressor and the tool bag (including rim nut wrench and towing eye) are hidden behind a vertical trim that runs across the entire width of the luggage compartment. The lower edge of the trim is held flush with the luggage compartment floor by a retaining rail and can be easily opened and folded forward to provide easy access to the items within. Integrated on the upper side is a holder which keeps the warning triangle handy for use in an emergency.

The first aid kit is located on the righthand side on the bulkhead. Vehicles with the basic equipment level are

Figure 71: Front luggage compartment

59

5.10.2 Rear luggage compartment

5.11 Glazing

The mid-engine design provides the ideal

The Boxster offers the following new

prerequisites for the familiar “twin

features in the area of glazing:

luggage compartment principle” of the Boxster. Even with the convertible

The use of a water-repellent coating

top down, the volume of the easily

on the side windows as on the new

loaded rear storage space is approx.

911 Carrera/S. These windows have the

130 litres/4.6 cu ft. The luggage com-

major advantage of being much less

partment lid can be conveniently opened

susceptible to soiling than conventional

The heavily top-tinted windshield

via a switch in the passenger compart-

windows since water and dirt falling

available as an option now has a grey

ment or directly via a button on the ig-

on them form droplets which are then

tint that complements all of the available

nition key. Both luggage compartments

carried away by the wind. This substan-

exterior colors.

offer a combined storage space of

tially improves the transparency of

approx. 280 litre/9.9 cu ft – enough ca-

the windows and therefore the overall

pacity for a holiday for two.

view in the rain and in winter weather conditions (when de-icing salt may be

The service tray containing the filler

used).

necks for engine oil and coolant is located to the right in the front.

Another new feature is the revised glazing concept. The amount of rubber visible around the windows has been reduced through the use of thinner seals. This technique results in aesthetically pleasing glass edges at the front window which emphasise the clean lines of the vehicle as a whole.

Figure 72: Rear luggage compartment

60

Figure 73: Boxster

5.12 Wind deflector The basic principle of the optional three-part wind deflector has been retained from the previous model. The taller roll-over bars (+25 mm/+0.99 in) facilitate a larger area for the central element made from Plexiglas. The latching mechanism at the mounting points on the roll-over bar has also been made considerably simpler and easier to use. The deflector can now be unlatched by simply pressing on one of the two release buttons and then removed. The insertion process has also be simplified. The wind deflector is now inserted by placing it on the center guide and then pushing it backwards into the two holders.

Figure 74: Wind deflector

The addition of a camber has increased the stability of the wind deflector by reducing buffeting at high speeds. The two outer sections of the wind deflector (fine-mesh plastic screen in the roll-over bars) are still easy to insert and are fixed in place by clips to prevent vibration.

61

5.13 Electrically operated convertible top The convertible top of the new Boxster has been completely redesigned while maintaining the basic principle with mechanical release, electric drive and zig-zag folding system.

The side view of the convertible top has been adapted to the new contours of the door windows.

The removal motion of the convertible top, and hence the entire kinematics of the top frame, has had to be redesigned to take account of the higher roll-over bar. This has accommodated the now higher roll-over bar without the storage position of the roof structure having to be changed.

The electrical controls for the convertible top can be used at speeds up to 50 km/h / 30 mph. Once the convertible top has been released, the opening process must be started via a switch with a tip/one-touch function. The tip function is available at speeds between 10 and 50 km/h / 6 and 30 mph. The switch must be held at speeds below 10 km/h / 6 mph. The closing process works in the same way.

The opening and closing time of 12 seconds for the new Boxster models sets another new standard in the area of convertible tops with separate top compartment lid and is the best in class among the competition.

As on the previous model, the front of the convertible top comprises a solid cast magnesium structure which offers increased passenger protection, particularly in the event of overturning with the convertible top closed, as it

Figure 75: Electrically operated convertible top

62

Figure 76: Convertible top structure and textile layers

5.14 Hardtop

significantly improves the strength and

edge is to drain the rain water that col-

stability of the convertible top in this

lects in the front header bow when the

area. The tension bows and central

vehicle is stationary into the seal of the

The optional hardtop has been essen-

spars from the corner and main bows

A-pillar via the corner sealing piece. This

tially retained from the previous model.

are made from aluminium. This has

results in better water drainage which

The easily mounted hardtop, which only

permitted a further reduction in the

significantly minimises the risk of

weighs around 23 kg/50.7 lbs, is made

weight of the convertible top/roll-over

rain water dripping off a wet convert-

from aluminium using the punch-rivet-

bar unit in comparison with the previous

ible top shortly after entry.

ing method and has a heated rear window.

model (which was already the best in its The scratch-resistant glass rear win-

The aluminium side sections with seal

dow, the only component to be retained

technology have been adapted to the

The quality of the convertible top

from the previous model, is heated to

new contours of the door windows.

cloth has been further improved through

ensure good visibility in all weather con-

extensive fine-tuning. This is reflected

ditions.

segment).

in the cloth which for the first time consists of 3 textile layers. In addition to the outer material and the headliner, there is also an additional new intermediate layer made from webbed fabric under the outer skin of textile, which has significantly reduced interior noise when the convertible top is closed.

The water management system for the convertible top has also been improved. This has been done through the addition of a further water drain to the water drain edge. The purpose of this

Figure 77: Hardtop

63

6 Aerodynamics During development of the new vehicle it became obvious that further enhancement of the aerodynamic properties of the Boxster in comparison with the competition was required. The objective in doing so was to take account of the increased performance by reducing the aerodynamic lifting forces and at the same time to further reduce the drag coefficient (despite the higher cooling air requirement for brake and engine cooling). Figure 78: Boxster S

The main challenges in the aerodynamic development of the new Boxster se-

These development objectives have

ries were:

mainly been achieved through:

• The larger frontal area, caused by

• Aerodynamic optimisation of the

flared wheel housings and wider tires

styling

in particular • Optimisation of the cooling-air guide • The lower lift coefficients and hence the increased wheel load

• The higher cooling air requirement

• New underbody lining

• Optimisation of add-on parts

of the brakes due to the increase in performance

• The more efficient cooling due to the higher engine output

64

The result has been a dramatic improvement in aerodynamic coefficients in comparison with the previous model.

• The drag coefficient of the Boxster has been reduced to cd = 0.29 (previous Boxster model: 0.31) and the drag coefficient of the Boxster S has been reduced to cd = 0.30 (previous Boxster S model: 0.32).

• Despite a larger frontal area, drag (cd x A) has actually been reduced in comparison with the previous model.

• The lift coefficients at the front and rear axle have been significantly re-

Figure 79: How the new Boxster compares

duced on the Boxster and Boxster S (front axle: –25 %, rear axle: –30 %).

The excellent aerodynamic coefficients have further strengthened the aerodynamic credentials of the new Boxster in its segment. The optimised aerodynamics of the new Boxster therefore help to improve driving dynamics, performance and fuel economy.

Drag coefficient

cd 2

Boxster (987)

Boxster (986)

Boxster S (987 S)

Boxster S (986 S)

Differences (%)

MY 05

MY 04

MY 05

MY 04

Boxster

Boxster S

0.29

0.31

0.30

0.32

– 6.5

– 6.3

Frontal area

AX (m )

1.96

1.94

1.97

1.94

+1.0

+1.6

Drag

cd x AX

0.57

0.60

0.59

0.62

– 5.0

– 4.8

Table 7: Overview of technical data*

*Model with manual gearbox, measured in the Porsche wind tunnel

65

6.1 Optimization of the styling of the outer skin

The lateral front apron radii and

The side windows also have a new

wheel housings are designed to shield

water-repellent coating for the first

the front wheels from the air flow in

time to reduce soiling.

The main objective in the redesign of the

an optimum manner. These measures

exterior has been to harmonise the

have resulted in a reduction in drag,

Rear area:

aesthetic and aerodynamic require-

improved ventilation of the wheel

The main optimisations in the rear have

ments. The main starting points when

housing and consequently less lift at

been to the flared wheel housings and

it came to optimising the aerodynamic

the front axle.

the rear spoiler.

of the vehicle, were the wings and rear

A-pillar/mirrors/side windows:

As on the front, the radii of the rear

side sections. Particular attention had

The shape of the A-pillar has also been

side sections have been designed to

to be paid to aerodynamic integration of

optimised in terms of flow characteris-

produce an aerodynamically efficient

the flared wheel housings.

tics and is now more vaulted. This

air flow at the rear wheels and the rear

reduces resistance and cuts down on

end, which improves resistance and

Rear area:

wind noises at higher speeds for no-

reduces lift at the rear axle.

The sweep and the radii of the front

ticeably more comfort on long journeys.

apron have been optimised to produce

The door mirror has been redesigned

In combination with the greater exten-

an aerodynamically efficient air flow

and is now connected to the mirror

sion height of the rear spoiler, this en-

at the front end and significantly

attachment finishers via a new double

sures that the rear spoiler functions at

better prerequisites for cooling air

arm. The mirror housing and the air

the optimum aerodynamic operating

flow without affecting the styling of the

duct at the mirror and the side windows

point and that the desired rear axle lift

outline. The lateral openings on the

have been optimised for minimum

with the optimum resistance advan-

front apron required to supply cool air

resistance and maximum protection

tage is achieved.

to the radiators have also been carefully

against drops of water landing on the

optimised and integrated in the front

mirror glass and the side windows.

outer skin, apart from the front and rear

end concept.

The redesigned air inlet in the rear side section echoes the geometric appearance of the Carrera GT. The position and

Figure 80: Air flow around the body

66

opening cross section of the air inlet have been carefully optimised to deliver the maximum increase in air throughput without negatively affecting lift and resistance. The result has been an improvement in the engine compartment flow, a reduction in the temperature level in the engine compartment and a guarantee of optimum intake of combustion air.

Figure 81: Air flow through the radiators/ brake cooling (shown on the 911 Carrera S)

6.2 Optimisation of the cooling-air guide

same time, targeted guidance of the cooling air ensures an optimum air flow for the radiators. When designing

The main objective when designing the

the cooling-air guidance system, particu-

cooling-air guide is to ensure the neces-

lar attention was paid to keeping the air

sary cooling air requirement for the

ducts short and the deflection as low as

engine and brakes in all operating

possible. The exhaust air flow from the

states of the vehicle. The general objec-

radiators is therefore now also expelled

tive with both cooling concepts is to

laterally into the wheel housing lin-

achieve a flow with as little resistance

ers instead of just vertically downwards

as possible to minimise the effect of

in front of the front wheels. This re-

the cooling-air flow on the resistance

duces flow loss for the cooling-air guid-

coefficient of the vehicle as a whole.

ance system while lateral expulsion of

The effect of the flow on the lifting

the air reduces the lift at the front axle.

forces must also be minimised or used as cleverly as possible to achieve

Another benefit of lateral expulsion is

the objectives for lifting forces and lift

that it results in much less dust being

balance.

raised when the radiator fan is running on dusty surfaces. Ventilation flaps

The higher output of the 3.2 litre engine

have been inserted into the corners of

of the Boxster S results in more engine

the square fan frames to further in-

waste heat, increasing the cooling air

crease air throughput during journeys.

requirement by approx. 15 %. In addition

These ventilation flaps open above

to using larger and more efficient radia-

speeds of approx. 70 km/h / 45 mph to

tors, the optimised cooling-air guide

facilitate an additional flow of cool air.

is a significant factor in the increased cooling performance. As on the previous

All in all and despite the increased

model, the new cooling-air guide is com-

cooling-air throughput, the new resist-

pletely closed to avoid leakages. At the

ance-optimised air routing concept

67

has enabled the air flow resistance to

6.3 Underbody lining

be limited to approx. 2.5 % of the total

The smoother underbody means that air hitting the rear of the vehicle is less

resistance – an extremely low level in

The underbody linings UBL1 (“front

prone to deceleration and turbulence.

comparison with the competition. Re-

underbody lining”), UBL2 (“center under-

This means that there is a greater air

quirement-driven supply of cool air has

body lining” and UBL3 (“rear underbody

flow mass available to the flexible deflec-

enabled significantly smaller air inlet

lining”) from the previous model have

tion vanes from the underbody flow,

openings in the front end in comparison

been optimised to the aerodynamic

which permits extremely efficient en-

with the competition, which fits in well

requirements of the new vehicle. In

gine cooling from the point of view of

with stylistic requirements.

comparison with the previous model,

aerodynamics and thermodynamics.

the lined area has been increased by approx. 70 %. The underbody lining at the front has been extended to the front side members to compensate for the aerodynamic drawbacks of the new brake air deflector. The two side sections of the center UBL2 have also been redeveloped.

As a result, the air routed along the lined underbody is now much less prone to turbulence and loss. The benefit of these measures and effects is that they allow the top speed to be increased and the fuel economy at higher speeds to be improved. These measures also help to improve the vehicle’s balance, particularly in higher speed ranges.

Figure 82: Underbody lining of 987 vs. 986

68

Figure 83: Underbody lining on the Boxster S

6.4 Add-on parts

The improved performance has also resulted in higher requirements for

Add-on parts such as wheel spoilers,

brake cooling. An optimised brake

brake air deflectors, etc. help to achieve

air deflector has been developed for

aerodynamic objectives and therefore

the Boxster which ensures more effi-

must be carefully optimised.

cient deflection of the air routed

The flared wheel housings and wider

through the brake air ducts on the un-

tires mean that the wheel spoilers for

derbody to the brake discs and signifi-

the front and rear wheels have had to

cantly better brake cooling as a

be redesigned and optimised. These

result of the higher air throughput.

wheel spoilers shield the wheels from the air flow in an effective manner and encourage the air coming from the front and the underbody to flow past the tires aerodynamically. This guarantees a lowresistance air flow around the wheels and reduces the overall drag coefficient. In addition, the optimised wheel spoilers and further add-on parts on the underbody influence the lifting forces in such a way as to achieve the desired aerodynamic lift balance.

69

7 Interior 7.1 Material design

tages of slush technology are higher-

in the center console and of the door

quality surfaces, more precise sizing of

storage bin are also upholstered in

components, uniform graining and the

leather on the Boxster S.

option to describe very small radii. The Particular attention has been paid in the

range of standard colors for the new

The seat center is in Alcantara as

new Boxster generation to improving

Boxster has also been extended to

standard.

the quality of the materials used in

include four new colors (Sand Beige,

the interior. Accordingly the amount of

Palm Green, Stone Grey and Ocean blue)

Further upgrade measures affect indi-

soft-touch paint has been reduced

in addition to Black.

vidual interior components which are

and more components based on slush

finished in the new color “Volcano

technology with improved surface

In both models the following compo-

Grey” or in an aluminium-look. These

quality and appearance used. The use

nents are upholstered in grained-look

also serve to differentiate between the

of slush technology has almost com-

leather as standard: shift lever, steering

Boxster and Boxster S.

pletely taken over from the lamination of

wheel rim, handbrake lever grip and

components with a flat film. The advan-

door handle. The lid of the storage bin

Figure 84: Interior in Macassar wood

Boxster Volcano Grey

Boxster S

Instrument cluster frame, center console trims/controls, Y-shaped cover of basic steering wheel or multi-function steering wheel (option)/hub trim of sports steering wheel (option), lower part of handbrake lever, roll-over bar, seat controls trim, seat fitting trim, backrest release trim, clothes hook on seat back, shell of rear seat backrest of (adaptive) sports seat (option), opening lever for convertible top Decorative dashboard trim, center console clasp

Aluminium-look finish

Vent trim rings, steering wheel spoke covers, glove compartment catch, door trim, airbag badge, decorative trim on front of shift lever, release button and gear selector gate for Tiptronic S (option), handbrake release button, seat controls, backrest release Decorative dashboard trim, center console clasp, gearshift pattern on shift lever

Table 8: Main interior parts can additionally be upholstered in leather and customised with wood, carbon or aluminium-look finish as an option.

70

Main interior parts can additionally be upholstered in leather and customised with wood, carbon or aluminium-look finish as an option.

Figure 85: Macassar wood interior

Figure 86: Sycamore interior

Figure 87: Carbon interior

71

The leather interior includes the standard upholstered items plus the following components:

upper part of dashboard incl. airbag cover, instrument cluster cover, lower part of dashboard and glove compartment lid, door-trim panels, door storage bin lid, center console storage bin lid, cushioned pads on the center console, cushioned pads on the roll-over bars and seats.

If a leather interior is ordered, all leather scopes will be finished in

Figure 88: Aluminium-look interior

smooth leather. The high quality of

7.2 Leather interior

Sand Beige, Palm Green, Stone Grey

the leather interior is further empha-

and Ocean blue. Terracotta, Cocoa and

sised with additional decorative

Optional partial leather seats are

a very attractive combination of Black

seams on the dashboard, the door-trim

available as the first upgrade level for

and Stone Grey (two-tone) are available

panel and the center console.

the Boxster series. With partial leather

as new special colors.

seats, the entire seat and backrest

The colors of Dark Grey and Brown

surface is upholstered in grained

from the previous model are available

leather.

in natural leather.

A leather interior is also available as an option in the standard colors Black,

Figure 89: Boxster S interior in Cocoa leather

72

7.3 Storage bins and transport concept The new Boxster offers an intelligent storage concept with a multitude of storage possibilities.

Glove compartment: The glove compartment on the passenger side is particularly spacious in comparison with the previous model, having been increased from 5 to approx. 6.5 litres/0.23 cu ft (300 mm/11.8 in (W) x 215 mm/8.5 in (D) x 100 mm/ 3.9 in (H)). The width has been selected

Figure 91: Cup holder

to accommodate commonly sized objects. The height can now also be more

Cup holder:

The cup holders are equipped with a

effectively utilised and offers suffi-

The newly developed cup holder is

special mechanism which allows them

cient space for items larger than

discreetly integrated in the dash-

to adjust to containers of different sizes

a commercially available road atlas. The

board above the glove compartment.

up to a maximum diameter of 74 mm/

glove compartment contains a compart-

It is hidden behind a hinged cover

2.9 in.

ment for two CDs (if the Sound Package

(with a Volcano Grey or aluminium-look

®

Plus or the BOSE Surround Sound sys-

paint finish depending on the equipment)

tem is ordered) and a holder for a pen.

which allows the compartment to be

It is opened via a hinged handle with an

elegantly closed even when the cup

aluminium-look paint finish and can be

holder is in use. Each cup holder can

locked to protect against theft.

be individually used if required. When in use, both holders sit in front of the passenger’s air vent. This permits extremely efficient cooling of beverages.

Figure 90: Glove compartment

73

Center console:

Sockets:

A storage box on the engine cover

In the bottom of the front part of the

The new Boxster has 3 sockets to meet

beneath the roll-over bar is available on

center console is a small, open stor-

even the most demanding customer re-

request. This box can be used to store

age tray which can be used for holding

quirements.

smaller items. It is not available in combination with the optional BOSE®

keys or other small items. There are also further storage facilities

As well as the cigarette lighter, which

in the rear part of the center console.

can be used as a socket, and the 12

Here, underneath an upholstered lid

volt socket in the large compartment in

which doubles as an arm rest, is a large

the center console, the new Boxster

compartment with approx. 1.5 litres/

also features an additional 12 volt sock-

0.05 cu ft of storage space (180 mm/

et on the side of the center console in

7.1 in (L) x approx. 105 mm/4.1 in (W) x

the passenger’s footwell.

approx. 80 mm/3.2 in (H)). Integrated in this compartment are a 12 volt socket

Further storage compartments:

and a coin holder. As before, the center

The door-trim panels house large stor-

console also contains an illuminated ash-

age pockets (300 mm/11.8 in (L) x

tray with cigarette lighter und cigarette

95 mm/3.7 in (W) x 120 mm/4.7 in (H))

extinguisher.

fitted with lids. These lids, with their comfortable padding, double as arm rests. For maximum ergonomics, the designers made particularly sure that the door and center console arm rests were the same height. The lids of the door storage bin and center console storage bin on the Boxster S are upholstered in grained leather as standard.

As in the previous model, the door sill on the passenger side features a long, open pocket.

All of the compartments in the center console and the sill pocket are lined with a removable rubber mat. This prevents rattling noises and produces an impresFigure 92: Front section of center console

sion of quality.

Integrated in the seat back of all the seat variants is a pocket which is ideally suited to holding a map or an ice scraper, for example.

Figure 93: Rear section of center console

74

Surround Sound system.

7.4 Steering wheels

extremely supple surface which gives the steering wheel an extremely agree-

A new generation of steering wheels

able feel and a classic look. The leather

has been developed for the new

at the steering wheel rim is hand-

generation of 911 and Boxster. This new

finished with a cross-stitch seam as

generation includes the standard basic

a final styling detail.

steering wheel and the optional sports steering wheel and multi-function steering wheel.

The clean, smart and sporty styling of the three new steering wheels is in perfect harmony with the newly designed interior. All steering wheel versions feature an integrated fullsize

Figure 94: Basic steering wheel (manual gearbox)

airbag. The steering wheel rim is

7.4.1 Basic steering wheel

upholstered in moulded leather as standard.

The basic steering wheel offers good All steering wheels have been designed

handling thanks to a small diameter of

with good ergonomics in mind.

just 375 mm/14.8 in. Clearly defined

Nonetheless the light-weight construc-

shapes and accents in silver and grey

tion techniques for which Porsche is

give a very high-quality appearance.

known have not been ignored: the substructure of the steering wheel is now

The cover of the lower vertical spoke

executed as a composite frame made

is painted Volcano Grey and frames the

of magnesium. This has enabled a

impact absorber at its two lower edges

reduction in weight of 10 % in com-

in a V- shape. The covers of the two

parison with the old steel and aluminium

horizontal spokes are painted with an

construction.

aluminium-look finish to provide a visual contrast.

All steering wheels are optionally available in the five interior colors or in the

As before, the Tiptronic S version has in-

special colors and natural leather

tegrated rocker switches on either side

colors at additional cost. The multi-

of the impact absorber.

function steering wheel is additionally offered in two types of wood (“Macassar”, dark and “sycamore”, light), in a carbon finish and in an aluminiumlook finish.

Even more desirable is the optional smooth leather upholstery for all steering wheel variants, automatically supplied with the wood or carbon steering wheel finish. The leather used is of an especially high quality with an

75

How the multi-function steering wheel works: The top two buttons have been executed as rotary switch buttons. The left button is used to regulate the volume of the audio system (turn) and mute the sound (push). The right button works in the same way as the right rotary switch button on the PCM. The center left button with the screen icon can be used in the basic setting to connect through the main menu. The center right button is assigned the “Back” function for returning to the PCM Figure 95: Sports steering wheel (manual gearbox, shown here on the 911 Carrera S)

Figure 96: Multi-function steering wheel (Tiptronic S)

menu. If there is a telephone installed in the vehicle, the two lower keys can be used

7.4.2 Sports steering wheel

7.4.3 Multi-function steering wheel

to accept and hang up calls. If there is no telephone installed, the two lower

The main differences between the sports

The multi-function steering wheel is

steering wheel and the basic steering

based on the basic steering wheel

wheel are the highly contoured rim

and is only available in combination with

The multi-function steering wheel is

and a round impact absorber. These

the PCM option. Unlike the basic steer-

additionally offered in two types of

are combined with a steering wheel

ing wheel however, it has four function

wood (“Macassar”, dark and

diameter of just 370 mm/14.6 in which

buttons and two function rollers

“Sycamore”, light), in a carbon finish

emphasises the sporty styling. The

(rotary switch buttons) evenly divided

and in an aluminium-look finish.

ergono-mically shaped finger plates on

between the left-hand and right-hand

the steering wheel rim ensure a good

spokes.

grip on the steering wheel even when the vehicle is driven more aggressively.

These buttons and rollers allow the

The accents of silver and grey are also

driver to operate essential audio, navi-

picked up on the sports steering wheel.

gation and if applicable telephone

Thus the covers of the three spokes are

functions without having to take their

painted in an aluminium-look finish for

hands off the wheel. This means less

emphasis. The impact absorber paint-

distraction and better concentration on

ed in soft-touch paint is embedded in

what is happening on the road.

a Volcano Grey decorative ring.

The black function buttons are embed-

As on the basic steering wheel, the

ded in bezels painted with an aluminium-

Tiptronic S rocker switches on the

look finish. This clearly emphasises the

sports steering wheel are arranged to

controls, both visually and functionally.

the left and right of the impact absorber.

They are also ergonomically arranged to ensure the driver can easily operate

The 3-spoke sports steering wheel

them using their left or right thumb.

will also be available in an upholstered version from 01/2005 at the earliest.

76

keys are unassigned.

7.5 Pedals

The accelerator pedal box is new. It has been redesigned with the aim of

Individual components of the pedals of

reducing the number of individual com-

the new Boxster have been redesigned.

ponents. A pedal encoder is now inte-

One of the most obvious changes is the

grated directly in the accelerator pedal

new sporty look. It is emphasised by

box. This means that the holder and spe-

the new pedal caps which consist of

cial control cable are no longer needed.

a rubber insert and a stainless steel

The main reason for doing this is that it

frame.

has enabled the module weight to be reduced by 60% (approx. 600 g/

Another advantage of the redesign is

1.3 lbs).

that it provided an opportunity to reposition the pedals towards the front of the vehicle, enabling the taller driver to find a more comfortable sitting position. This repositioning of the pedals was made possible mainly through the new bulkhead cross member in the body-in-white. This allowed the brake and accelerator pedals to be moved forward by 10 mm/0.4 in and the clutch pedal by 15 mm/0.6 in.

Figure 97: Pedals

77

7.6.1 Overview A fully electric seat, a sports seat and an adaptive sports seat are available as options in addition to the standard seat. The standard seat and fully electric seat are available in soft ruffled leather in combination with the leather interior. All seat variants are characterised by the following features:

Improved comfort: It is a fact that average body size across the world is getting bigger. To take account of this fact the front seats

Figure 98: Boxster S interior with soft ruffled leather seats

have been designed for larger people,

7.6 Seats

• Considerable improvement in comfort on short and long journeys

The seat system in the Boxster has to fulfil special requirements in terms of

• Improvement of the lateral support

frame with the same outer contour. The slimmer frame meant that the available

for safety and light-weight construction

• Consistent implementation of light-

have also increased in comparison with

weight construction techniques

the previous model. In order to meet

the seats have been redesigned with

shoulder area and the seat cushions. This was done using a slimmer seat

driving behaviour and space. Standards

these requirements without compromise,

particularly in relation to the width of the

interior seat dimensions were increased which allowed the use of foam that is approx. 20 % thicker than in the

• Option via Tequipment to install child

predecessor.

seats

the following objectives:

The main influencing factors for relaxed • Further improvements in passenger

driving are the level of support and the

protection through integration of addi-

level of shock absorption, for example

tional thorax airbags as well as higher

on uneven surfaces, offered by the seat.

backrests with improved headrests

Following extensive testing of damping behaviour in the vehicle, Porsche has developed a patented damping/ vibration system for its seats.

Improved lateral support: Lateral support for occupants is especially important, particularly with high lateral acceleration. A seat with good lateral support will stabilise the driver and passenger, for example when cornering at high speeds, without the need for any additional support. This is a prerequisite for precision control in extreme driving situations.

78

7.6.2 Standard seats

The higher side bolsters in the new seat

Increased passenger protection:

generation provide improved lateral

The revised Porsche Side Impact

support. The side bolster cushions are

Protection System (POSIP) includes a

The seats in the new Boxster can be

further reinforced by the contour of the

number of airbags.

adjusted in 6 directions. The backrest

frame. The lateral support offered by

In addition to the head airbag integrated

recline is adjusted electrically, while

the sports seats is 50 % greater than

in the door-trim panel, there is an addi-

the length and height are adjusted

that offered by the standard seats.

tional thorax airbag integrated in the

mechanically. Height adjustment is

Lastly the adaptive sports seat sys-

outer side bolster of the seats. The

performed using a newly developed

tem even offers a facility for individually

thorax airbag has a volume of approx.

stepper mechanism located between the

adjusting the side bolsters of the seat

8 litres/0.28 cu ft.

seat and the sill. The advantage of the new mechanism is that it permits pre-

cushion and the backrest to the respective driver. This provides greater support

The increase in body size already men-

cise and smooth adjustment of the

for the body than is possible with con-

tioned above has been taken into ac-

seat height without the driver having to

ventional sports seats.

count with a 50 mm/2.0 in increase

support themselves using the steering

in backrest height. The gap between

wheel, for example.

More consistent use of light-weight

the back of the head and the head-

construction techniques:

rest has been reduced by bending the

The overall weight of the vehicle has a

backrest mounts towards the occupant

direct influence on performance and fuel

at an angle of 90 degrees. This reduces

economy. The consistent use of light-

the occupants’ risk of whiplash in the

weight construction techniques in the

event of a rear-end collision.

new seat system has facilitated a reduction in weight despite the higher strength requirements. As a result, the new seat system is approx. 6 kg/ 13.2 lbs lighter than a predecessor seat equipped with comparable functions.

Integration of ISOFIX and LATCH child seats: The possibility to retrofit child seats using an ISOFIX or LATCH anchorage on the passenger seat has been taken into account in the development of the new seats. Since the child seats are fixed directly to the seat frame with ISOFIX and LATCH, the structural rigidity has been increased. The passenger airbag can be deactivated via a key switch when the child seat is in place. This key switch and the preparation for child-seat mounting are part of a Tequipment retrofit package.

Figure 99: Standard seat

79

7.6.3 Fully electric seats

7.6.4 Sports seats

7.6.5 Adaptive sports seats

With the optional fully electric seats, all

Sports seats are offered as an option

The optional high-end adaptive sports

settings can be adjusted electrically

for the Boxster and Boxster S to take

seat represents a further step towards

via controls on the sill side of the seat

greater account of customer wishes and

an individually adjustable sports

cushion. Electric seats can be adjusted

the sporty character of the vehicle.

seat. It combines the advantages of

in 12 directions. They offer the same

They are based on the six-way standard

the fully electric 12-way seat struc-

adjustment options as the standard

seats and offer greater lateral sup-

ture with the increased lateral sup-

seats, plus adjustment of the seat cush-

port. This is achieved with higher side

port and design of the sports seat. It

ion incline. The mechanism for adjust-

bolsters in the seat cushions and back-

also offers the user 4-way adjustment

ing the seat cushion incline is not

rest as well as extended support in

of the side bolsters. This enables the

linked to the backrest recline. This

the shoulder area. Other features of

interior dimensions of the seat cush-

means that the backrest recline does

the sports seat include firmer padding

ion and backrest to be enlarged or

not change when the seat cushion in-

and a sportier design. Sports seats

reduced independently of each other.

cline is adjusted (therefore the backrest

are always upholstered in leather, the

does not have to be re-adjusted). A fur-

backrest is painted Volcano Grey.

Seats manufactured specifically accord-

ther feature of the fully electric seat is

ing to the physical dimensions of the

the pneumatic four-way lumbar sup-

driver for optimum support are a familiar

port. This support is provided via inflat-

part of motor sport. The adaptive sports

able air cushions whose fill level is now

seat allows similar conditions to be emu-

recorded by displacement pick ups. This

lated in just a few seconds at the touch

means that the lumbar support function,

of a button. Unlike static sports seats,

like all of the other seat adjustment

adaptation enables the seat to be

functions and the outer mirrors, can

co-ordinated to the clothing and driving

be included in the scope of the

style.

memory. The buttons of the seat memory units are now located in the door-trim panel. This location has the advantage of being easily accessible and within the driver’s field of vision.

Figure 100: Fully electric seat

Figure 101: Sports seat

Figure 102: Adaptive sports seat

80

Figure 103: Adaptive sports seat

Attribute Seats

Standard seats

Sports seats

Fully electric seats

Adaptive sports seats

Longitudinal adjustment

manual

manual

electric

electric

Height adjustment

manual

manual

electric

electric

Backrest recline adjustment

electric

electric

electric

electric

Seat recline adjustment

not available

not available

electric

electric

Adjustable lumbar support (with memory function)

not available

not available

pneumatic

pneumatic

Side bolster adjustment

not available

not available

not available

pneumatic

Memory scope

not available

not available

all seat settings and both door mirrors

all seat settings apart from side bolsters, both door mirrors

Table. 9: Overview of adjustment options

81

8 Electrics 8.1 Main headlights and front lights The main headlight has been completely redesigned as part of the development of the new exterior styling. It is one of the main distinguishing features of the new face of the Boxster and represents an ideal synthesis of innovative design and tradition. The new design sees the marker light and fog light housed in a separate module. This has enabled the main headlight to be

Figure 104: Boxster

made more compact and rendered in a typical Porsche oval shape. The

The gap between the marker light in the

position help to improve visibility

indicator lights have been integrated

front light and the dipped beam in the

when the fog lights are on.

in the main headlights.

main headlight constitutes a classic Porsche night-time design (four-light

Failure check:

The front light complements the design

look). A blue bulb (12 V/ 5 W, “blue

Most exterior lights are equipped with a

of the main headlight and integrates

vision”) ensures that the light spectrum

failure checking facility. In the event

seamlessly into the styling of the air

of the marker light is very similar to that

of a problem (e.g. bulb failure), a mes-

inlet in the front apron. A special lens

of the main headlight, creating a uniform

sage is displayed in the instrument

at the side of the light cover particularly

night-time design.

cluster for the following lights: dipped beam, high beam, marker light, indicator

emphasises the contour of the lights when it is dark. The light houses the

The front fog lights have been separat-

light, brake light, rear fog light, revers-

marker light and fog light and is

ed from the main headlight module to

ing light.

fitted with clear glass and free-form

enable them to be positioned consider-

reflectors. The housing is secured using

ably closer to the road surface. The im-

invisible screws.

proved lateral illumination and lower

Figure 105: Boxster

82

8.1.1 Halogen main headlights

8.1.2 Bi-Xenon main headlights incl. headlight washer system

The standard halogen main headlights on the new Boxster are executed as clear-glass projection beam head-

In addition to the automatic-dynamic

lights (previous model: reflective head-

range adjustment mechanism, the

lights). The dipped beam is emitted

optional gas discharge light system

from an H7 long-life bulb (12 V/ 55 W)

also includes the headlight washer

while the high beam is provided by an

system. The Bi-Xenon main headlight is

H9 bulb (12 V/ 65 W). The range and

similar in structure to the halogen ver-

road illumination properties of both

sion. The gas discharge lamp replaces

these beams have been adapted to the

Figure 106: Halogen headlight

the top (the gas discharge lamp as-

high performance of the Boxster. There is also an additional reflector around the

the halogen bulb of the dipped beam at

• Reduction of dazzle for passers-by

sumes the function of both the dipped

dipped beam module. It is illuminated by

through the imposition of an upper re-

beam and the high beam). The free-

a portion of the dipped beam and serves

striction for the light/dark limit at the

form reflector with halogen bulb

to brighten the surroundings.

outer edge of the road. This restriction

(H 11/ 55 W, long-life) mounted at the

The option of using the dipped beam as

is lower than on the previous model

bottom of the main headlight is connect-

so-called daytime running lights,

(here there is no upper restriction of

ed as an auxiliary main-beam head-

where the lights come on automatically

the 15° illumination angle to the right).

light. It is designed as a spot to ensure

each time the vehicle is started, is also

The result is a wide range at the outer

better long-range illumination of the

new. This significantly increases active

edge of the road, however as the light

road.

safety (only in combination with PCM

is below the point of sight of passers-

and Sport Chrono Package Plus).

by it does not cause dazzling.

The Bi-Xenon system offers the following advantages in addition to the halo-

The H7 projection system offers

• Longer dipped beam range (approx.

gen headlight for dipped beam:

the following advantages for dipped

70 m/230 ft). This is due to the high

beam:

installation position of the headlight

• Very high luminous flux

above

• High color temperature for good

• High luminous flux

the road and the arrangement of the

color perception

lighting components. Like the halogen headlight, the Bi-Xenon

• Considerably more light in the extreme range of the light/dark limit

• More defined light/dark limit resulting in less dazzle for other road users

The high beam emitted by the H9 bulb

headlight can also be used for daytime

provides good range, which is particu-

running lights.

larly important when driving at high speeds.

• Homogenous illumination of the entire lane

• Broader lateral illumination than with the previous model resulting in greater safety, particularly when driving around tight corners

Figure 107: Illumination range for dipped beam

83

Figure 108: Illumination range for dipped beam

Figure 109: Illumination range for high beam

The headlight washer system, stan-

is now located directly in front of the

dard for the Bi-Xenon main headlight,

headlight. The water spray is routed in

has been moved from the new main

the direction of movement of the vehi-

headlight and integrated in the front

cle. This means that instead of deflect-

end. It uses a chrome-colored cylinder

ing the water spray, the air flow actually

that extends with the pressure of the

increases its speed of delivery.

spray water when the system is activated. The increased pressure of the spray jet ensures an optimised cleaning process. The “triangular trim” around the headlight has been done away with to give the headlight an even greater impression of quality. The position of the spray jet has been optimised in comparison with the previous model and

84

8.2 Rear light unit and high-level third brake light The new rear light unit is elegantly integrated in the wing. Red and clear glass function areas ensure a homogeneous and highly refined appearance. The brilliance of the lights is reinforced by the horizontal stripe design of the lens and the metallised housing surface. The rear light unit has been com-

Figure 110: Rear light unit

pletely redesigned and reduced in size to fit in with the new line of the rear side

The new LED technology has a num-

section and the vehicle rear. It combines

ber of clear advantages in terms

the rear fog light, indicator light, revers-

of service life and response time.

ing light, reflector, brake light and tail

The response time of bulbs is around

light in one housing. The rear fog light is

100 ms. LEDs in contrast respond after

located on the outside of the driver’s

around 0.1 ms. This difference trans-

side in this configuration. The side mark-

lates to a distance of approx. 3 m/9.8 ft

er light and reflector required for the

at a speed of 100 km/ h / 62 mph.

USA markets are also integrated in the

Earlier indication of an intention to brake

light unit.

means more time for other drivers to react. LEDs also generally have a serv-

Particular attention has been paid to the

ice life of in excess of 10,000 hours

new night-time design of the Boxster

while bulbs need to be replaced after on-

when it comes to the rear view also.

ly 200 –1,000 hours.

Whereas the tail light on the previous model illuminated just one light chamber, the tail light in the new rear light illuminates three tail light chambers and so continues the typical Porsche nighttime look to the rear view also. The bulbs in the rear lights are designed for long life to help reduce the cost of ownership.

The new high-level third brake light is executed using LED technology and has been designed to fit in perfectly with the new styling of the rear of the Boxster. A striking feature of the light is the silver-grey lens, which gives the rear of the vehicle a more powerful appearance.

Figure 111: Night-time design

85

Figure 112: High-level third brake light

8.3 Exit lighting /coming home lighting

8.4 Wiper system

8.5 ParkAssist

The wiper system features two wiping

The parking sensors of the optional

The addition of automatic coming

speeds and an interval setting. They

ParkAssist system on the new Boxster

home lighting to the exit lighting repre-

are controlled by means of three posi-

have been even more discreetly inte-

sents yet another major increase in

tions of the right-hand steering column

grated in the rear end. They are

convenience. Automatic coming home

stalk. The custom wiping interval is set

inserted from the back into a bracket

light is preselected by moving the light

via a potentiometer in the steering

attached to the rear apron and clipped

switch to the HOME position.

column stalk.

into place. This new technology means

Having the wiper controlled via the

that securing rings which would be

When the door is opened or the vehicle

vehicle electrical system control unit

visible from the outside are no longer

is unlocked using remote control, the

means that additional information is

required. This further improves the

front fog lights, tail lights and licence

available for automatic regulation of the

homogeneous appearance of the

plate lights come on for 30 seconds

wiping speed and for error diagnosis.

rear apron.

to illuminate the surroundings.

For example, the control unit can tell

In vehicles with PCM and Sport Chrono

from data transmitted by the sun-posi-

Package Plus, the duration for which

tion sensor in the automatic climate con-

the lights stay on can be changed in the

trol system (optional) that it is dark out

“Individual Setting/Light” menu option.

and can then regulate the wiper mode

The sun-position sensor in the optional

more sensitively if the rain sensor is acti-

automatic climate control system

vated. The wipe/wash function is con-

monitors the ambient brightness to

trolled in the same way. The wiper func-

prevent the lights being switched on

tion is automatically set to level 2 at

unnecessarily.

speeds above 110 km/ h / 70 mph to provide the driver with a clear view as quickly as possible.

A rain sensor integrated in the foot of the interior mirror is available as an option (in combination with automatically adjustable mirrors). When it rains, the wiping speed is automatically and continuously selected to suit the conditions. The sensitivity of the rain sensor can also be set via the potentiometer in the steering column stalk.

Figure 113: ParkAssist sensors

86

8.6 Door mirrors / interior mirror

8.8 HomeLink ®

The door mirrors have been com-

An integrated garage door opener

pletely redesigned and represent an

is being offered for the first time for

important element in the new exterior

the Boxster with HomeLink® (optional).

styling. They are connected to the mirror

HomeLink® replaces up to three

attachment point finishers via a double

hand-held transmitters with a single

arm, which gives them a more sporty

system which is permanently installed

appearance. A redesigned mirror hous-

in the vehicle and operated from the

ing allows the mirror glass to be

vehicle interior. It can be programmed

placed deeper in the housing. This

to the frequencies of most normal hand-

provides better protection for the

held transmitters used to actuate

Figure 114: Door mirror

garage door and gate systems. It can

mirror glass against turbulence and possible vibrations at high speeds.

8.7 Interior lighting

also be used to control lighting and alarm systems once these are equipped

Both door mirrors are electrically heated and adjustable and, in the case

The interior lighting in the Boxster is

of fully electric seats or adaptive sports

based closely on the concept used in

seats, are interfaced with the memory

the previous model. New are the white

function. An automatic anti-dazzle

LEDs for instruments and controls,

feature is available for both door mir-

which offer significantly better illumi-

rors and the interior mirror upon request

nating power than the yellow LEDs

(optional in combination with the rain

used in the previous model. This has

sensor). The mirrors can also be folded

improved the readability of the instru-

in and locked, for example to protect

ments, particularly at dawn and dusk.

them.

The white light of the new LEDs is also much more comfortable for the human

The interior mirror has been retained

eye. Another advantage is that yellow

from the previous model. The LED

and red warning symbols and lights

orientation light is positioned in the

now stand out more. The white light-

interior light module. An automatic

ing gives the interior a very high-

anti-dazzle feature is available for the

quality appearance, which creates an

interior mirror (optional, only in com-

extremely pleasant ambience. Two

bination with rain sensor and automatic

footwell lights have also been provided

anti-dazzle door mirrors).

for better illumination of the passenger

The styling of the automatic anti-dazzle

compartment.

interior mirror has been adapted to reflect the new interior design.

87

with the appropriate radio receivers.

8.9 Instruments

The dot matrix display is still integrated in the center round instrument under-

The instrument cluster of the Boxster

neath the rev counter and now displays

was reworked during the redesign of

additional functions such as the RDK

the interior.

menu (optional from MY06) or the stop-

It still comprises three individual

watch from the Sport Chrono Plus pack-

instruments, however they are now

age (optional).

spaced further apart. This has enlarged the display areas and

The warning lights, which were previ-

improved readability.

ously located underneath the round in-

The dials in the S model are finished

struments, have been incorporated into

in light grey to distinguish them from

the dials so that they are more directly

the dials in the basic model, which are

in the driver’s field of vision.

finished in black. As in the interior, the lighting is white here also.

The three round instruments feature permanent analogue displays for speed, engine speed, fuel level and coolant temperature. There are also permanent digital displays for total mileage and trip mileage (left), time and exterior temperature (right) and centred underneath the tachometer, the speed currently being driven.

The now standard on-board computer allows the driver to call up the average speed, average fuel consumption, remaining range, tire pressure (with the RDK option as of MY06) and navigation

Figure 115: Boxster instrument cluster

instructions (with the PCM option) via the lower left-hand operating lever on the steering wheel. The digital display at the top is reserved for speed, however the lower two fields in the display field beneath the tachometer allow a wide range of information to be displayed and called up. The information available depends on the equipment installed in the vehicle.

Figure 116: Boxster S instrument cluster

88

Figure 117: Operating lever for the windscreen wiper/washer function

Figure 118: Cruise control operating lever

8.10 Steering column stalk

8.11 Cruise control

The steering column stalks have been

The operating concept of the cruise

redeveloped and in the process the

control has been optimised. The new

haptic (touch and feel) characteristics

operating lever attached beneath the

have also been improved. The interval

wiper level now has 4 operating direc-

switch for the window wiper has been

tions instead of 3 as before. The

integrated in the right steering column

command for “Interrupt” is executed

stalk. The lower steering column stalk

by pressing the lever downwards. The

for the optional cruise control has been

command for “Resume” is executed by

redesigned to make it more intuitive.

pressing the lever upwards. The com-

A one-touch indication function which

mand for “Decelerate” is the same as

causes the direction indicator to flash

the command for “Accelerate”, the only

three times has been integrated in the

difference being that the driver pulls the

left stalk. Beneath this is the operating

lever forward to slow down and pushes

lever for the on-board computer.

the lever forward to speed up.

On top of that cruise control can now be used in first gear and offers an extended speed range of 30 to 240 km/ h / 19 to 150 mph for the new Boxster (previous model: 40 to 210 km/ h / 25 to 131 mph).

89

8.12 Heating/air conditioning

The air conditioning system and automatic climate control differ visually from

The new Boxster and Boxster S now fea-

the previous generation through a new

ture a manual air conditioning system

control interface in the center console.

with combined interior air filter (active

The main changes to the control inter-

carbon and pollen) as standard. Auto-

face are:

matic climate control is available as an option.

• Integration of the interior temperature sensors for the optional

Both units are based on the previous

automatic air conditioning system

systems, but have been revised to en-

(previously in the dashboard on the

sure more even and comfortable ventila-

passenger’s side)Integration of the

The integration of the switches for seat

tion of the passenger compartment.

switches for heating the driver’s

and rear window heating in the air condi-

and passenger’s seats (previously

tioning control interface has resulted in

in the center console)

a logical overall concept in the new

These new climate control systems: • ensure more even ventilation of the passenger area,

Boxster. All of the air conditioning func• Integration of the button for heating

• are less prone to draughts,

the rear window (previously located

• are quieter and

beside the operating unit)

• offer a greater range of functions. • Introduction of switches for adjusting The air conditioning system, in which

the temperature and fan power

the desired cooling power can be infi-

(previously plus and minus buttons)

nitely selected via a rocker switch, controls the conditioned air mixture by mixing warm and cold air in the heater box.

• Labelling of the button for switching the air conditioning compressor on and off with “ECO” (a symbol of

The optional automatic climate con-

Figure 120: Air conditioning control panel

a snowflake was previously used)

trol is operated via the corresponding switch with presetting of the desired temperature. This is kept constant via the familiar temperature- and sun-sensor parameters as well as the mixture of warm and cold air in the heater box.

Figure 119: Air conditioning

90

tions in the vehicle are now together in a single unit.

Improvements in more detail: The entire air conduction system has

8.13 Ignition lock with one-key system

been reworked to make it more efficient.

Once the key is positively identified and the initial resistance is then overcome with the key, the starter is activated

The redesigned air distribution system

The ignition key of the Boxster – like

and the engine starts. In order for this

with larger, more uniform pipe cross

the 911 Carrera/S – has been restyled.

to happen, the clutch pedal must be

sections and optimised lateral distri-

The function of the buttons for unlocking

depressed in vehicles with manual gear-

bution for the left- and right-hand sides

the vehicle and luggage compartments

box or the brake pedal depressed and

of the vehicle in particular ensure more

has not changed, however they are now

the selector lever set to “P” or “N”

homogeneous air conditioning for the

made from a high-quality plastic for

in vehicles with Tiptronic S.

passenger compartment.

greater stability and a more comfortable feel. The remote control transmitter

8.14 Power windows

The new design of the air conduction

has had its range increased by ap-

system ensures the availability of a

prox. 50 % so that it can be used from

greater volume of air. This means that

distances of up to 15 m/49.2 ft regard-

The power windows feature the usual

with the same air throughput, the same

less of the position of the key in relation

functions for short-stroke lowering, anti-

level of ventilation as before can be

to the vehicle.

pinch protection and one-touch operation. The controls for the power win-

achieved by reducing the power of the fan. The advantage of this for the cus-

Like the 911 Carrera/S, the new Boxster

dows are now located in the door-trim

tomer is two-fold: fewer draughts and

features an electronic ignition lock

panels along with the memory buttons

less flow noise.

and an electromechanical steering

for the optional fully electric seats. The

column lock for increased anti-theft

switches are characterised by a typical

The redesigned passenger vents in

protection. Individual components can-

ergonomic Porsche design.

the dashboard permit a higher degree of

not be replaced without the use of spe-

individualisation for the driver and pas-

cial testers and access codes belonging

senger. The increased vertical and hori-

to the vehicle.

zontal adjustment range of the vents and the separate left/right knurled wheel

If the steering wheel is strained, a

for the center vent permit a more per-

warning is displayed in the instrument

sonalised air setting than was previ-

cluster and the driver is asked to move

ously possible.

the steering wheel so that the strain can be released and the steering wheel unlocked.

Figure 121: Ignition key

Figure 122: Power windows

91

8.15 Networking

8.16 Sport Chrono Package /Sport Chrono Package Plus

Electronic networking in the Boxster

8.16.1 Analogue stopwatch The analogue stopwatch is a visual indi-

allows data and electrical information

The Sport Chrono Package/Sport

cation that the vehicle is fitted with the

to be exchanged between various

Chrono Package Plus is available as an

Sport Chrono Package/Plus.

control units throughout the vehicle.

option in the new Boxster. Both options

This is realised with the aid of the inter-

include:

It is swivel mounted on the dashboard (for use by the driver/passenger) and

nal high-speed network, the so-called CAN-BUS (Controller Area Network), and the fibre-optic network, the so-called ®

MOST -BUS (Media Orientated System Transport).

• an analogue stopwatch on the

provides an analogue display of the hours, minutes and seconds which

instrument panel • Sport mode for engine, PASM and

have elapsed since timing started.

PSM as well as the Sport button for

Seconds, tenths of seconds and hun-

activating it

dredths of seconds can be read off the

In the new Boxster, up to 29 control

integrated display. A digital display

units can be exchanging up to 2 MB of

When twinned with the optional Porsche

runs in parallel in the instrument

data per minute via the CAN bus at any

Communication Management (PCM), the

cluster. The stopwatch is activated by

time. Approx. 2,500 different signals

Sport Chrono Package becomes the

selecting the Chrono menu in the instru-

have been defined to this end. Network-

Sport Chrono Package Plus and of-

ment cluster (by pressing the on-board

ing reduces the number of connections

fers the following additional scopes:

computer lever). Recording of lap

required so that the total length of ca-

times can be initiated by starting the

bling required can be kept significantly

• a performance display in the PCM

stopwatch. It is ended by stopping the

shorter.

as well as

stopwatch. The lap times can be stored

• an individual memory.

for subsequent evaluation.

Most of the network connections can be found in the following areas:

The Sport Chrono Package/Plus offers the customer a complete package which

• In the area of engine management for high-speed information exchange.

increases driving pleasure by improving lap times and the agility of the vehicle.

• In the area of coordination of networked control engineering. Thus a PSM braking operation, for example, involves the control units for the brakes (PSM), engine and Tiptronic S.

• In the area of audio/communication for the joint transmission of digital audio and control data via the socalled MOST®-BUS.

• In the area of vehicle weight. Network connections have facilitated a reduction in weight of approx. 5 kg/ 11 lbs in the new Boxster, even though functionality has been extended. Figure 123: Analogue stopwatch from the Sport Chrono Package/ Plus

92

8.16.2 Sport mode/Sport button The driver can select a sportier setup by pressing the Sport button in the center console. A certain amount of comfort is sacrificed in this mode for the sake of sportiness.

As soon as the Sport button is pressed to activate Sport mode, the

Figure 125: Sport button in the center console

word “Sport“ appears in the instrument cluster display and the following

These functions are described in detail

systems are switched to “Sport“:

in the chapters on the engine and chassis. The figure shows the possible com-

• Engine functions

binations of Sport mode, PASM und PSM

o More dynamic acceleration pedal characteristics

and their effects on the stability/agility of the vehicle.

o More abrupt high-speed cut-off o More sporty load cycle behaviour

• Porsche Stability Management (PSM)

• Porsche Active Suspension Management (PASM) (optional)

Figure 124: Stopwatch displays in the on-board computer

Figure 126: Possible Sport mode, PASM and PSM combinations

93

8.16.3 Performance display in the PCM

The performance display provides the

The Sport Chrono Package Plus includes

• Recording the time profile for any

the addition of a “performance

following options:

route section

display” in the PCM display system. This performance display and the stopwatch can be used to record the fastest

• Driving against a pre-recorded reference lap with real-time analysis

lap times or route times and archive them for subsequent analysis. They also allow the driver to race against a

• Displaying the lap currently being driven

stored fastest reference lap. The comparison of the reference lap and

• Displaying the remaining range in

the current lap is performed in real time

km / miles and the resulting remaining

based on the route section currently be-

number of laps

ing driven. The color-coded representation used for the real-time analysis (red, yellow, green) shows the driver’s time

• Evaluating and managing recorded routes

profile in comparison with the reference lap, even under sporty driving condi-

The display is operated in the familiar

tions. The laps can be displayed in the

way via the PCM operating panel.

form of a bar chart.

Figure 127: Sport displays in the PCM Individual memory

94

8.16.4 Individual memory The individual memory allows extended vehicle settings to be made via PCM. These settings are individually assigned to the respective ignition key. Each time the key is inserted in the ignition lock, the stored settings are automatically activated via PCM.

The following individual options are available:

• Daytime running lights on/off

• Comfort lighting duration adjustable from 10 seconds to 120 seconds

• Automatic climate control: Save basic setting (e.g. 23°C/73.4°F, fan set to maximum output and defrost on)

• Unlocking opens all doors or just the driver’s door

• Autolock: Off, on upon ignition or active after moving off

All settings can be made in the “Individual Memory” menu, which is called up via “Set” in the PCM main menu.

Figure 128: “Individual memory“ displays in the PCM

95

9 Safety and security

As well as unlocking via remote control,

9.2 Active safety

the vehicle can also be unlocked in an

9.1 Anti-theft protection

emergency via the door lock cylinder

All Porsche vehicles have to fulfil very

in the driver’s door. Only the interior sur-

high active safety requirements.

The Boxster can be optionally fitted with

veillance system and the door contact

They do this through their superior

an anti-theft alarm system including

on the driver’s side are deactivated,

driving performance and excellent

interior surveillance. The Boxster S

however - not the anti-theft alarm sys-

braking performance, among other

is fitted with the anti-theft alarm system

tem. If the ignition key is not inserted

things. This applies equally to the

as standard, the interior surveillance is

and successfully identified using the

Boxster and the Boxster S. With plentiful

available as an option.

transponder housed in the key within

reserves of acceleration and torque

The anti-theft protection system is

15 seconds, the alarm will be triggered.

on tap, it’s extremely easy to overtake

essentially the same as in the previous

If the door on the new Boxster and

and the brakes permit rapid and stable

model. New scopes will be briefly

Boxster S models is not opened within

deceleration in an emergency.

illustrated below.

20 seconds of being manually unlocked, it is automatically locked again and all

The chassis ensure superior agility, high

Interior surveillance is now performed

alarm contacts and radar interior surveil-

possible lateral acceleration and very

using a radar sensor instead of an

lance activated.

good driving stability. The optional

infrared sensor. The advantage of this is

PASM chassis offers clear advan-

that reflections from particularly bright

tages again when it comes to driving

interior leathers are no longer detect-

stability through automatic activation

ed as warning signals. This means that

of different damper characteristics

interior leathers in colors to sample can

depending on the driving style and road

be used without any problem.

surface. For example, the dampers are

The alarm contact for the storage

switched to a more stable shock absorp-

bin in the center console is no longer

tion setting even in normal mode to

required since the bin can no longer be

increase active driving safety at top

locked, the alarm contact for the glove

speed. This reduces the tendency of

compartment remains.

the body to tilt when changing lanes or performing evasive manoeuvres and considerably improves the driver’s control over the vehicle.

Figure 129: Boxster

96

Figure 130: Boxster

The revised PSM, now standard, offers

The following points, which are of major

a major improvement in stability

significance for high active safety, have

even on the most treacherous road sur-

been further improved on the new

faces or at the limits of the car’s driving

Boxster:

dynamics. The continued development of PSM has resulted in an improved control quality and therefore a shorter braking

• Safer behaviour during lane changes, even at high speeds

distance, while retaining all of the known benefits of the system.

• Very good acceleration potential and driving stability

The operating concept of the new Boxster has been optimised throughout to ensure reliable operation of all func-

• Very high potential lateral acceleration

tions in any given driving situation. This, together with an excellent panorama

• Agile, direct and targeted steering

view for a roadster, is an important contribution to active driving safety.

• Very short braking distances

The new headlights with their im-

• High level of braking stability during

proved road illumination and the re-

cornering and straight-ahead driving

sultant improved view for the driver, particularly at high speeds, also contribute to active driving safety.

• PSM control system to assist the driver when exploiting the vehicle’s performance to the full

97

9.3 Passive safety

The window slot reinforcement of the

In addition to the existing 3-point auto-

doors has also been optimised. This

matic belts with belt tensioners and

The new Boxster complies with all of

reinforcement additionally transfers the

belt-force limiters, the Boxster is fitted

the relevant standards on passive vehi-

forces introduced in a frontal impact to

with six airbags as standard. This in-

cle safety in the relevant markets. In fact

the rear of the vehicle via an upper

cludes two new fullsize front airbags

it improves upon the limits prescribed

door load path and a support on the

and the newly developed POSIP

in legislation for frontal, oblique, side

rear side section. This has further

(Porsche Side Impact Protection) system

and rear impact as well as overturning.

improved the deformation behaviour and

which now comprises a thorax airbag

In order to satisfy the increased re-

the integrity of the passenger cell

integrated in the side of the backrest of

quirements for frontal impact, a new

(important for protecting passengers).

the seats and a new head airbag in the

bulkhead cross member made of high

The newly developed roll-over bar

door on each side of the vehicle.

strength steel has been used in the front

is now higher and further back. It is

of the vehicle. The purpose of the bulk-

made of austenitic stainless steel, a

head cross member is to absorb the

special stainless steel alloy that offers

forces introduced by the front side mem-

maximum strength, and is manufactured

ber structures in the event of a crash, to

using IHPF technology (internal high-pres-

reduce deformation in the footwell and in

sure forming). This new manufacturing

doing so to ensure better protection for

method and an optimised design have

occupants.

permitted a 30 % increase in strength. These measures combined with the new

Reinforcement of the overall vehicle

seats and their higher headrests have

structure has been mainly achieved

permitted a further improvement in

through the use of the spot

the already impressive passenger

welding/bonding method and through

survival space of the previous model.

the revised joint design.

Mild Steel Tailored Blanks High Strength Steel Ultra High Strength Steel High Strength Austenitic Stainless Steel Aluminium

Figure 131: Body carcass

98

Figure 132: Airbags

Front airbags:

Porsche Side Impact Protection System

large side airbags, which were either

In addition to the crash sensor integrat-

(POSIP)

housed in the seat or in the door-trim

ed in the airbag control unit on the cen-

The new Boxster is among the first cars

panel. A separate head airbag which

ter tunnel, there are two sensors in the

on the market to use the new genera-

works in the same way as a curtain

front of the vehicle mounted near the

tion of the standard Porsche Side Im-

airbag but unfolds upwards from the

headlights for detecting the point and

pact Protection System (POSIP). It now

window channel instead of downwards

direction of impact. This enables earlier

comprises two airbags per side: a tho-

has been developed for the new Boxster.

and more accurate sensing of crash-

rax airbag and a head airbag.

With a volume of approx. 8 litres/

es, particularly complex impact scenar-

0.3 cu ft also, this airbag offers effec-

ios such as offset crashes. This has the

A specially adapted thorax airbag is

tive head protection. In the event of a

major advantage of further reducing

now integrated in both the driver’s and

side impact the head airbag unfolds in

passenger injuries in a crash.

passenger’s seat to protect the upper

the shape of a protective cushion. Like

body in a side impact. In the event of

the thorax airbag, the head airbag is al-

As on the previous model, the passen-

a crash the airbag, which has a volume

so inflated using a hybrid generator.

ger airbag is housed in the upper area

of approx. 8 litres/0.3 cu ft, is inflated

The sensors for detecting a side im-

of the dashboard. The airbag flap, which

by a gas generator based on hybrid

pact and thus for activating the side

used to be visible, has now been inte-

technology.

airbags are located in the airbag con-

grated in the dashboard to produce a

trol unit on the center tunnel and in the

more homogenous styling effect. In com-

As well as having a thorax airbag, the

bination with the leather interior, decora-

Boxster is the first open car in the

tive seams hint at the styling of the

world to be fitted with a separate

airbag cover.

head airbag in the door. The head airbags in closed vehicles are executed as curtain airbags, so-called because they unfold down from the roof rail like a curtain. Up to now, this type of airbag could not be used in open vehicles. Instead the previous model featured

99

area of the side sills.

Passive security in the passenger compartment The seat belts and the standard airbags offer excellent protection in a crash. This protection is further enhanced by a safety-oriented passenger compartment design. Energy-absorbing structures in the dashboard and, for example, the A-pillar linings reduce the injuries suffered by passengers in the event of a crash. The headrests in the new Boxster have been increased in height by 50 mm/ 2.0 in and moved closer to the head to increase protection against whiplash. As a result they now offer even better head support in crashes.

100

10 Environment

be used) sheet steels, aluminium cast

to expand the corresponding markets.

alloys and plastics. The luggage com-

This particularly applies to plastics,

Environmental protection has a long

partment lid, engine block, cylinder

which in recent years account for an

tradition at Porsche. For many years,

heads, pistons, transmission housing,

ever increasing percentage of vehicle

the principle of sustainment has

suspension control arms, front and rear

weight. Pure types of production waste,

defined the work of the engineers at

axle components, wheels, brake calipers

sprues or faulty batches do not neces-

the Porsche Development Centre,

and oil cooler are all examples of where

sarily have to be disposed of as waste.

Weissach, in their search for solutions

aluminium has been used in the body,

They can be reprocessed and used as

which protect the air, rivers and seas

engine, gearbox and chassis to reduce

plastic recyclate in the manufacture of

and the earth without burdening natural

weight. In fact the total percentage of

new parts. Bearing in mind the strict

resources. All Porsche sports cars

aluminium used in the vehicle as a

quality requirements of the Porsche

comply with all current and some

whole is approx. 18 %.

developers, recyclates fulfil the same

planned worldwide exhaust emission regulations.

technical requirements as new material. Porsche vehicles are extremely durable.

Examples of parts made of 100 % plas-

Even older vehicles have such a high

tic recyclate are wheel housing liners,

residual value that they are rarely recy-

various covers, spoilers, covers and

cled. Nonetheless, once they have

housings.

reached the end of their life they can be

Polyester nonwoven stampings have

Material selection plays an important

adequately recycled using conventional

replaced the old polyurethane moulded

role in the environmental compatibi-

methods to comply with all current

foam parts and cotton fibre nonwoven

lity of a vehicle. Environmental compati-

statutory requirements. The same ap-

absorbers. As a unitary system the

bility is assessed by examining the

plies for the Boxster, approx. 85 % of

new components are now 100 % re-

entire life cycle of the vehicle from

which can be recycled.

cyc-lable. The absorbing effect vis-à-

provision of the raw materials through

Like all Porsche vehicles, the new

vis the passenger compartment has also

production and utilisation to recycling

Boxster models are also free from

been optimised through a new floor car-

of the end-of-life vehicle.

CFCs and parts manufactured using

pet composition with nonwoven fabric

CFCs. Further only environmentally-

reinforcement.

10.1 Materials /recycling

Light-weight construction techniques

friendly water-based paints are used,

contribute to environmental compatibility

which reduces the need for solvents in

by reducing fuel consumption during

the production process.

the utilisation phase. Light-weight construction is realised on the Boxster

The EU guideline on end-of-life

through a high percentage of high-

vehicles requires that vehicle manufac-

strength (which means less material can

turers use more recycling material

Figure 133: Boxster

101

10.2 Noise /acoustics

tuning. Among other things, they have permitted a further reduction in tire

The Porsche Boxster should be recog-

noise.

nisable not only from its design and technology, but also the typical

Suppressing wind and tire noises

Porsche, load-related sound of both

has allowed greater emphasis to be

the exterior noise and interior noise.

placed on the engine sound. The

This goal has of course been brought

Boxster delivers a typical Porsche sound

into line with statutory requirements.

in every driving situation without pollut-

Porsche engineers have managed to

ing the environment with excessive

comply with all worldwide noise regula-

noise.

tions. The insulation (for the passenger comThe increased size of the wheels results

partment) has been developed to opti-

in a tendency to produce more tire

mise the typical Porsche interior sound

noise. This problem was addressed in an

while retaining the interior noise level.

early phase of development and led to

The absorbing effect of the components

Porsche engineers working with the tire

has been improved without fundamental-

manufacturers to minimise tire noise

ly impairing the insulating effect through

through a favourable profile design and

the selective use of new insulating

rubber mixture. Support bearings with

materials. One of the goals in adjusting

so-called Celasto inserts have also

the passenger compartment sound has

been used on the Boxster S, at the up-

been to reduce background noise in the

per ends of the suspension struts.

higher frequency range and to greater

These inserts are made of a foamed

emphasise the sporty, load-related

PUR (polyurethane) and offer advantages

exhaust and intake noises between 300

in the area of acoustics and chassis

and 600 Hz.

Figure 134: Technological overview of the Boxster

102

11 Audio and communication 11.1 CDR-24 CD radio with sound system The Boxster series features the new CDR-24 CD radio as standard equipment. It is based on the previous CDR-23 radio, now with considerably enlarged control interface, which significantly improves clarity and ease of operation. The radio also uses the standard white interior lighting, which improves the appearance considerably.

Figure 135: CDR-24

All of the old features such as dual

11.2 Sound Package Plus

tuner, 30-station memory (20 USW,

• Door: 2 x 100 mm/3.9 in mid-frequency

10 MW, plus 9 each for autostore), back-

The Porsche Sound Package Plus

ground traffic station, top-of-the-range

represents the first optional upgrade

CD drive, etc. have been retained.

level in the new Boxster. With its 7 loud-

loudspeakers 2 x 200 mm/7.9 in low-frequency speakers

speakers and external analogue The new interior provided an opportunity

amplifier, it offers a superior sound

The high- and mid-frequency loudspeak-

to house new and higher-quality loud-

experience and plentiful sound re-

ers are driven by the 2 x 25 watt amplifi-

speakers in the vehicle. The dashboard

serves for all driving conditions. It does

er integrated in the CDR-24. An external

contains two tweeters, while each of the

this through the use of large-size

analogue amplifier housed in the lug-

doors houses a 165 mm/6.5 in low-

loudspeakers of superior quality

gage compartment drives the low-fre-

range loudspeaker that delivers excellent sound even in the basic version.

quency loudspeaker (2 x 70 watt) and The following loudspeakers are used:

the center loudspeaker (40 watt). The sound system has been adapted to the

• Dashboard:

specific interior acoustics of the Boxster

2 x 19 mm/0.7 in high-frequency loudspeakers

through extensive adjustment of the amplifiers.

1 x 70 mm/2.8 in mid-frequency loudspeaker (center speaker)

Figure 136: Center loudspeaker

103

Figure 137: High-frequency loudspeaker in dashboard

• Engine compartment cover: 2 x 64 mm/2.52 in wide-band loudspeakers (rear speakers) 2 x 130 mm/5.12 in low-frequency loudspeakers (subwoofer)

Audio electronics: • 7-channel MOST ® digital amplifier with 5 x 25 watt linear amplifiers, for highFigure 138: BOSE® loudspeaker in the door-trim panel

Figure 139: BOSE® subwoofer

and mid-frequency loudspeakers as well as 1 x 100 watt switching amplifier for the low-frequency loudspeaker.

11.3 BOSE Surround Sound system ®

®

The BOSE Surround Sound system, the second optional upgrade level in the Boxster, offers the following compo-

The completely redeveloped BOSE

®

er page in the living history of BOSE

sound systems in Porsche vehicles. It is the first time that a sound system has

• External microphone (housed in the Loudspeakers:

steering column cover) for detecting

• Dashboard:

background noise in the passenger

2 x 25 mm/0.99 in neodym high-

been available as an option in a Boxster.

frequency loudspeakers

Eleven loudspeakers and a 7-channel

(“soft-dome spherical cap”)

digital amplifier integrated in the digi®

1 x 70 mm/2.76 in neodym mid-fre-

tal MOST -Bus ensure a sound experi-

quency loudspeaker (center spea-

ence never before experienced in

ker)

the roadster segment. • Door: The following settings can be made in the Sound menu of the radio or PCM:

2 x 80 mm/3.15 in neodymium midfrequency loudspeakers 2 x 200 mm/7.88 in Nd ® low-frequen-

• Adjustment of the sound using base

fier integrated in the active subwoofer.

nents:

Surround Sound system writes anoth®

• Additionally 1 x 100 W switching ampli-

cy loudspeakers

and treble setting

• Adjustment of the sound focus using fader and balance • Activation of AudioPilot TM

• Activation of Surround sound (BOSE® Centerpoint TM technology)

• Fine tuning of the auditory impression when surround sound is active

• Adjustment of the auditory position in Stereo mode (left, symmetric, right) Figure 140: BOSE® Surround Sound system components

104

compartment

The signal processing system exhibits

• Centerpoint TM signal processing

• Dynamic loudness function

technology

The dynamic loudness function in-

The Centerpoint system is a surround

creases the bass tones when the

decoder specially developed for the

volume is decreasing. This compen-

The additional center fill loudspeaker

limited auditory environment in vehi-

sates for the reduced sensitivity of

in the center of the dashboard is

cles. The algorithm used by this propri-

the human sense of hearing at these

activated using data from the left- and

etary BOSE® technology delivers an

frequencies.

right-hand channel via a special sig-

exclusive sound experience with exhil-

This process functions much more

nal processing system (Surround-

arating Surround Sound pleasure.

precisely than conventional loud-

stage ). This ensures an optimum

The technology also converts conven-

ness control systems. The base

and balanced sound for all passen-

tional audio sources such as CDs, or

tones are amplified in such a way that

gers.

even stereo recordings, into five sepa-

there is no audible change.

the following special features:

• Centre fill and Surroundstage

TM

TM

rate audio channels. ®

• Surround (BOSE Centerpoint

TM

technology)

• BOSE ® AudioPilot TM • Active electronic equalisation

BOSE® Automotive Surround Sound

In order to achieve a high-fidelity ®

The AudioPilotTM automatically controls the sound and volume as a

can be switched on at the touch of a

sound experience, BOSE active

function of background noises such

button. This system uses additional in-

electronic equalisation exactly adapts

as wind and tire noise. This functional-

dependent audio channels in the front

acoustic reproduction to the specific

ity ensures a constant acoustic im-

and rear of the vehicle to produce a

acoustics of the vehicle interior.

pact

lifelike and high-fidelity 360° sound

The reproduction of all frequencies is

in all driving conditions, which means

experience. The BOSE -patented sig-

adapted so as to ensure that both

that the driver does not have to

nal processing system increases the

passengers enjoy the same superior

continuously re-adjust the sound.

stereo sound of stereo recordings.

sound quality at the same time.

The background noises are recorded

®

This results in a much more refined

by a special microphone in the steer-

sound experience. The sound-effect

ing column cover and processed.

volume can be adjusted in the Sound

A considerable improvement in

Set menu (PCM: from –12 to +9,

comparison with the system in the

CDR-24 : 4 levels with off, low, mid

previous model has been achieved

and high).

through the use of additional information (speed, convertible top position, etc.) in the volume control algorithm. As a result, the volume control is now much more robust and almost all unwanted fluctuations in volume have been eliminated.

105

11.4 Aerial system

11.6 Porsche Communication Management (PCM)

The Boxster features a powerful win-

11.6.1 Navigation The navigation module has also been

dow antenna as standard. As on the

The new PCM has been integrated in the

thoroughly revised in the course of

previous model, antenna diversity is

overall design of the new interior and up-

development of the new PCM. The new

part of the optional PCM. The antenna

grades all illuminated components in the

navigation module includes a DVD navi-

are still housed in the windshield and

passenger compartment with a white

gation drive in the front luggage com-

improve USW reception in the event of

LED light. The navigation system is in-

partment. This enables constant navi-

interference, for example slowly driving

tegrated as a module in the system. The

gation guidance within an entire

part traffic lights.

accommodation of the DVD navigation

continent for the first time (e.g. West-

A rod antenna, which is mounted on

drive in the front luggage compart-

ern Europe or USA /Canada) since all of

the front right wing, is available upon re-

ment mean that the CD drive can be

the map data can be stored on a single

quest at no extra charge to improve the

used as a dedicated audio CD drive.

DVD. The generous memory depth of

medium range reception.

This means that the driver no longer has

the DVD means that the full digitisation

to make the tedious switch between au-

depth of the underlying map can now be

dio and navigation CDs.

accessed. The DVD drive permits much

11.5 CD autochanger/ CD autochanger preparation

faster access to map data than the CD drive. This means that route calcuVarious functions of PCM can be con-

lations and refreshing of routes can

The 6-disc CD autochanger housed in

trolled by the new, optional multi-func-

be performed faster. The digital map

the front luggage compartment has

tion steering wheel. Among other

now has considerably more zoom

been retained from the previous model

things, this multi-function steering wheel

levels for greater magnification of the

and is available as an option.

has a so-called screen key that can be

map material.

Each vehicle is fitted with a CD auto-

assigned different PCM functions. These

changer preparation as standard.

functions are programmed in the Set

This consists of a light waveguide

menu of PCM.

®

(MOST ) and a cable for the power supply so that a CD autochanger can be easily retrofitted.

Figure 141: CD autochanger

Figure 142: PCM

106

11.6.2 Telephone module

11.8 Passive handset

The handsfree system of the optional

The console for holding the passive

telephone module has been further

handset has been adapted to the new

improved with regard to speech

interior and directed more towards

quality. The microphone has been

the driver’s seat for more convenient

moved from the instrument cluster to

operation.

the steering column, thereby focusing the directional characteristic more on the driver. A triband telephone module

Figure 143: Passive handset

(900, 1800, 1900 Mhz) which will also be available for the USA market will be available from 12/ 04.

11.7 Mobile phone preparation As before a preparation for using a mobile phone is available in combination with the now standard radio. A mobile phone preparation for the new PCM will also be available specifically for the USA. The mobile phone preparation includes the aerial, located in the radiator tank in front of the windscreen, the wiring loom, the microphone for the handsfree function, the VDA interface for the adapter kit and an attachment console for the telephone holder. The telephone-specific adapter kit can be retrofitted at any Porsche Centre or mounted in any American Porsche Centre.

107

12 Equipment (EU model) 12.1 Standard equipment (EU model)

Boxster

Boxster S

O = Standard

6-cylinder horizontally opposed engine, aluminium block and cylinder heads, water cooling, four-valve technology, “VarioCam” camshaft adjustment, hydraulic valve clearance compensation, integrated dry sump lubrication, electronic engine management (Motronic ME 7.8), electronic accelerator pedal, hot-film air flow sensor, sequential fuel injection (Multipoint), cylinder-specific knock control, two three-way catalytic converters, stereo Lambda control circuits, individual ignition coils, static high-voltage ignition system, variable double-chamber resonance intake system, idling control, On-Board Diagnosis system for monitoring the emission control system

O

O

• • • •

Displacement: Maximum output: Maximum torque: Brushed-look oval tailpipe

2.7 l (163.96 cu in) 176 kW (240 HP) 270 Nm/199 lbs/ft

O @ 6,400 rpm @ 4,700 – 6,000 rpm

• • • •

Displacement: Maximum output: Maximum torque: Brushed-look dual tailpipes

3.2 l (193.98 cu in) 206 kW (280 HP) 320 Nm/236 lbs/ft

@ 6,200 rpm @ 4,700 – 6,000 rpm

o = Optional Engine:

O

Transmission: O


O


Chassis: Spring strut (type: McPherson, Porsche-optimised) with anti-roll bars front and rear, rack-and-pinion power steering with variable steering ratio, Porsche Stability Management (PSM) with ABS, ASR, ABD and MSR

O

6.5J x 17 RO 55 Boxster II alloy wheel with 205/55 ZR 17 tires at front, 8J x 17 RO 40 Boxster II alloy wheel with 235/50 ZR 17 tires at rear

O O

8J x 18 RO 57 Boxster S alloy wheel with 235/40 ZR 18 tires at front, 9J x 18 RO 43 Boxster S alloy wheel with 265/40 ZR 18 tires at rear Tire sealing compound and electrical compressor [spare wheel and jack in the rear luggage compartment in the following countries: Saudi Arabia, Brazil, Virgin Islands and Israel.]

O

O

O

O

O

Brake system: 4-piston aluminium monobloc fixed-caliper brakes with internally ventilated and perforated brake discs front and rear, ABS 8.0 (integrated in PSM), pad wear sensors on each pad

O

Power-boosted brake system (front disc diameter: 318 mm/12.5 in instead of 298 mm/11.7 in, disc thickness front and rear + 4 mm/0.2 in)

O

Brake calipers anodised black

O

Brake calipers painted red

Body: 2-seater roadster with two luggage compartments (front: approx. 150 l, rear: approx. 130 l), shell hot-dip galvanised on both sides, aluminium luggage compartment lid front and rear, roll-over protection (incl. reinforced A-pillar, roll-over bar), 3-layer convertible top with heated glass rear window, automatically extending/retracting rear spoiler, bow-type door handles, door stops with 3 index positions, side windows with water-repellent coating, underbody lining

O

O

O

Front apron with additional third air inlet Black air inlet grille in the front apron, titanium-colored logo on rear lid

O O

Titanium-colored air inlet grille in the front apron, silver-colored logo on rear lid

O

Windscreen with grey top tint

108

O

Boxster

Boxster S

O = Standard

Deformable front end and rear end with integral light-alloy bumpers mounted on impact elements

O

O

Passive restraint system: • 3-point automatic seat belts, belt lock on seat, belt tensioner and belt force limiter • Airbags for driver and passenger • Porsche Side Impact Protection System (POSIP) comprising: o Head airbags integrated in door-trim panel o Thorax airbag integrated in side bolsters of seats o Side-impact protection elements in each door

O

O

Preparation for ISOFIX child-seat mounting, preparation for child seat detection

O

O

Driver and passenger seat with electric backrest adjustment and manual length and height adjustment, headrests integrated in seats, partial leatherseats (leather finish in standard color: seat center, seat side bolsters and headests)

O

O

3-spoke steering wheel (leather) with manual reach and height adjustment

O

O

Standard interior in standard color [Boxster only] (Boxster S only):

O

O

Lockable, large glove compartment, storage bins in the doors and the center console (front and rear), two separate cup holders (integrated behind the decorative dashboard trim)

O

O

Illuminated vanity mirror in the swivelling sun visors (driver and passenger sides)

O

O

Home Link (integrated garage door opener)

O

O

Door entry guards with Boxster or Boxster S logo

O

O

Pedals in sports look

O

O

Electric windows with one-touch open/close facility and short-stroke lowering, windscreen washer system with 2 wiping speeds and adjustable intermittent wipe cycle, heated windscreen washer nozzles, electrically adjustable and heated door mirrors (double-arm), aspherical on driver’s side

O

O

Electrically operated convertible top with automatic lowering and closing of the side windows (operated using a one-touch/tip function up to 50 km/h / 30 mph)

O

O

Double-height CDR-24 radio as standard incl. 4 high-quality loudspeakers, preparation for CD autochanger retrofitting

O

O

o = Option

Passive safety:

Interior:

• Grained leather finish in interior color: steering wheel rim, door handle front side, handbrake lever handle, shift or Tiptronic S selector lever, (door armrest lid, center console storage bin lid) • Volcano Grey: instrument cluster frame, lower part of handbrake lever, [decorative dashboard trim, shift/selector lever clasp], Y-shaped standard steering wheel cover, seat controls trim, seat fitting trim, backrest release trim, clothes hook on rear seat backrest, roll-over bar • Aluminium-look finish: steering wheel spoke covers, door opener, glove compartment handle, head airbag crest, shift lever trim, decorative side and center vent rings, seat controls, backrest release, (shift/selector lever clasp, decorative dashboard trim, shift lever cap) • Plastic parts finished in soft-touch paint • Sun visors in black plastic film

Electrical system:

O

Sound Package Plus (with loudspeakers and CD storage tray in glove compartment) Uniform lighting concept with automatic deactivation for the entire interior, continuously variable dimming in white, footwell lightin

O

O

Cruise control

O

O

Central locking with remote control incl. release for front/rear luggage compartment

O

O

Immobiliser (transponder system), safe locking system

O

O O

Alarm system with radar interior surveillance

109

Boxster

Boxster S

O = Standard

Modular clear-glass halogen main headlights (projector-type) with integrated indicator light, separate additional lights in the front end with marker light and fog light, rear fog light on driver’s side

O

O

Automatic coming home lights

O

O

Instrument cluster: three analogue round instruments (speed, engine speed, coolant temperature, fuel level) integrated in the cockpit, central rev counter with integrated multi-function display, permanent digital display of total and trip mileage, time and exterior temperature as well as speed, on-board computer over multi-purpose display

O

O

Instrument cluster with black dials

O

o = Optional

Lighting system:

Instruments:

O

Instrument cluster with light grey dials

Air conditioning: Air conditioning with integrated active carbon filter+pollen filter, green-tinted heat insulating glass Table 10: Standard equipment (EU model)

110

O

O

12.2 Individual equipment for MY05

Boxster

Boxster S

O = Standard

Bi-Xenon headlights

o o o o

o o o o

498

Deletion of model designation

W

W

635

ParkAssist (rear)

P12

Automatically adjustable interior/door mirrors on driver’s and passenger side, incl. integrated rain sensor

550

Hardtop

551

Wind deflector incl. storage box on engine cover

XMK*

Roll-over bar in exterior color

o o o o o

o o o o o

o

o o o

o = Optional

W = Available at no extra cost

I-No.

Description

Exterieur Code

Metallic paint

Code*

Special colors

Code*

Colors to sample

P74

Engine, transmission and chassis 249

Tiptronic S

450

Porsche Ceramic Composite Brake (PCCB)

475

Porsche Active Suspension Management (PASM)

P04

Sport package (6-speed manual gearbox and PASM)

639

Sport Chrono Package

640

Sport Chrono Package Plus (only in combination with PCM)

XLA**

Chrome-plated stainless steel tailpipe

XCZ*

Short shifter (greater than the standard reduction to further reduce the shift throw)

o o o o o o

o o o o

Wheels 397

18-inch Boxster S wheel

403

19-inch Carrera S wheel

405**

19-inch Carrera Classic wheel

407**

19-inch SportDesign wheel (vgl. S. 50, Fig. 61)

446

Wheel centres

XD9*

Painted wheel spokes

482/ 483***

Tire pressure monitoring system (RDK)

o o o o o o o

111

O

o o o o o o

Boxster S

I-No.

Boxster

O = Standard

o = Optional

o o

o o

Description

Interior 573

Automatic air conditioning Instrument cluster dials in:

XFD /XFE /XFF* XFG /XGH /XFJ*

• Interior color (Sand Beige, Terracotta, Natural Brown)

• Exterior color (Guards Red, Speed Yellow, Carrara White) (Note: available in special color or color to sample as Exclusive Special Order)

o

534/ 535

Alarm system with radar interior surveillance

534/ 535

Radar interior surveillance

P15

Fully electric seats (electric adjustment of all seat functions, incl. memory function for seat, mirror and lumbar position settings for driver’s seat)

P77

Sports seats (leather, manual fore/aft and height adjustment and electric backrest adjustment)

P01

Adaptive sports seats (electric adjustment of all seat functions additionally with 4-way adjustment of the side bolsters, incl. memory function for seat, mirror and lumbar position settings for driver’s seat as well as both door mirrors)

342

Heated seats

XSH XSX XSY*

Seat belts in: • Silver Grey • Guards Red • Speed Yellow

XME*

Rear center console painted in exterior color

509

Fire extinguisher (DIN EN3 powder fire extinguisher containing 1 kg of extinguishing agent, accommodated in the front under the driver’s seat)

o o

o

o

o

o

o

o o

o o

o o

o o

o

o

o

o

o

o

o

o

Leather 982

Soft ruffled leather seats (soft ruffled leather on seat center (5.1) (only in combination with leather interior))

Code

Leather interior in standard color (leather finish in smooth finish: upper part of dashboard incl. airbag cover (2.0a), instrument cluster cover (2.0b), lower part of dashboard incl. three-part glove compartment lid (2.1a), door-trim panel incl. head airbag cover (3.0a), door mirror (3.0c), center console front side trim (4.0a), seat base (5.0), seat center (5.1), seat side bolsters (5.3a))

Code*

Leather interior in special color (Terracotta, Cocoa) (leather scope same as standard colors)

970

Two-tone leather interior (combination of the colors Black and Stone Grey; same features as leather interior in standard color)

112

Boxster S

I-No.

Boxster

O = Standard

o = Optional

o

o

o

o

o

o

o

o

o

o

o

o

o o

o o

o

o

o

o

o o

o o

o

o

o

o

o

o

o

o

o

o

Description

Leather 998*

Natural leather interior (Natural Brown or Natural Dark Grey) (same features as leather interior. With Natural Dark Grey leather, plastic parts painted in soft-touch paint in Black)

Code*

Leather interior in color to sample (Custom color. Leather scope same as standard colors. Exceptions: 3-spoke steering wheel with leather-covered rim, shift/selector lever (4.1a) and handbrake lever grip in black; plastic parts painted in soft-touch paint in Black)

E32*

Additional interior package with dashboard in leather (leather finish in interior color: side vent vanes (incl. adjusters) (2.5b), center vent vanes (incl. adjusters) (2.6b), dashboard loudspeaker cover (center, 2.8b)), defroster trim (2.4a), decorative dashboard trim incl. cup holder trim (2.3)

XTV*

Additional interior package with door-trim panels in leather (leather finish in interior color: door handle trim (3.2c))

XNG*

Leather instrument cluster frame (leather finish in interior color: instrument cluster frame (2.0d))

459

3-spoke steering wheel in smooth leather (smooth leather finish in interior color: steering wheel rim (with cross-stitched seam, 2.2a) and airbag module (2.2b))

435

3-spoke sports steering wheel in leather

460

3-spoke sports steering wheel in smooth leather (smooth leather finish in interior color: steering wheel rim (with cross-stitched seam, 2.2a) and airbag module (2.2b))

XPA*

Padded 3-spoke sports steering wheel in smooth leather (smooth leather finish in interior color: steering wheel rim (with cross-stitched seam, 2.2a) and airbag module (2.2b), steering wheel hub trim (2.2g))

431

3-spoke multi-function steering wheel in smooth leather (smooth leather finish in interior color: steering wheel rim (with cross-stitched seam, 2.2a) and airbag module (2.2b))

XSC*

Porsche crest on head restraints

XMZ*

Rear section of center console in leather (leather finish in interior color: rear of center console incl. ashtray lid (4.4a), handbrake lever handhold trim (4.4b))

XMR*

Leather sun visors (leather finish in interior color (left/right) incl. cover of vanity mirror. Passenger’s sun visor includes reading light with switch)

XX1*

Leather floor mat trim

Wood 801

“Macassar” interior package, dark (matt satin finish) (trimmed with macassar: decorative dashboard trim incl. cup holder trim, five-part (2.3), shift/selector lever (4.1a), handbrake lever handle (4.3a))

802

“Sycamore” interior package, light (matt satin finish) (trimmed with sycamore: decorative dashboard trim incl. cup holder trim, five-part (2.3), shift/selector lever (4.1a), handbrake lever handle (4.3a))

451

3-spoke “Macassar“ multi-function steering wheel, dark (matt satin finish) (steering wheel rim (2.2a) with smooth leather finish with wood inserts, airbag module (2.2b) with smooth leather finish)

113

Boxster S

I-No.

Boxster

O = Standard

o = Optional

o

o

o

o

o

o

o

o

o

o

o

o

o

o

o

o

o

o

o

o

o

o

o

o

o

o

o

o

o

o

Description

Wood 452

3-spoke “Sycamore” multi-function steering wheel, light (matt satin finish) (steering wheel rim (2.2a) with smooth leather finish with wood inserts, airbag module (2.2b) with smooth leather finish)

E37*

Additional interior package with “Macassar” dashboard, dark (matt satin finish) (trimmed with macassar: inserts in defroster trim (2.4a). Smooth leather finish in interior color: side vent vanes (2.5b), center vent vanes (2.6b), dashboard loudspeaker cover (center, 2.8b), defroster trim (2.4a, partially))

E38*

Additional interior package with “Sycamore” dashboard, light (matt satin finish) (trimmed with sycamore: inserts in defroster trim (2.4a). Smooth leather finish in interior color: side vent vanes (2.5b), center vent vanes (2.6b), dashboard loudspeaker cover (center, 2.8b), defroster trim (2.4a, partially))

XTT*

Additional interior package with “Macassar” door-trim panels, dark (matt satin finish) (trimmed with macassar: door storage bin lid (3.3c), door storage bin lid extension (3.3c), door handle trim (3.2c))

XTU*

Additional interior package with “Sycamore” door-trim panels, light (matt satin finish) (trimmed with sycamore: door storage bin lid (3.3c), door storage bin lid extension (3.3c), door handle trim (3.2c))

XJT*

Rear of center console in “Macassar”, dark (matt satin finish) (trimmed with macassar: rear of center console incl. ashtray lid (4.4a). Smooth leather finish in interior color: handbrake lever handhold trim (4.4b))

XJU*

Rear of center console in “Sycamore”, light (matt satin finish) (trimmed with sycamore: rear of center console incl. ashtray lid (4.4a). Smooth leather finish in interior color: handbrake lever handhold trim (4.4b))

Carbon 803

Carbon interior package (carbon finish: decorative dashboard trim incl. cup holder trim, five-part (2.3), shift/selector lever (4.1a), handbrake lever handle (4.3a))

453

3-spoke carbon multi-function steering wheel (steering wheel rim (2.2a) with smooth leather finish with wood inserts, airbag module (2.2b) with smooth leather finish)

E39*

Additional interior package with carbon dashboard (carbon finish: inserts in defroster trim (2.4a). Smooth leather finish in interior color: side vent vanes (2.5b), center vent vanes (2.6b), dashboard loudspeaker cover (center, 2.8b), defroster trim (2.4a, partially))

XTL*

Additional interior package with carbon door-trim panel (carbon finish: door storage bin lid (3.3c), door storage bin lid extension (3.3c), door handle trim (3.2c))

XMJ*

Rear section of center console in carbon (carbon finish: rear of center console incl. ashtray lid (4.4a). Smooth leather finish in interior color: handbrake lever handhold trim (4.4b))

X69*

Carbon door entry guards

Aluminium-look finish / stainless steel E40*

Interior package with aluminium-look dashboard (aluminium-look: instrument cluster frame (2.0d). Leather finish in interior color: side vent vanes (2.5b), center vent vanes (2.6b), dashboard loudspeaker cover (center, 2.8b), defroster trim (2.4a))

XTW*

Interior package with aluminium-look door-trim panels (aluminium-look: door storage bin lid (3.3c), door storage bin lid extension (3.3c), door handle trim (3.2c))

114

I-No.

Boxster S

W = Available at no extra cost

Boxster

O = Standard

o = Optional

o

o

o

o

o

o

o o

o o

o

o

o o o

o o o

o

O

o

o o o o

Description

Aluminium-look finish / stainless steel XPV*

Aluminium-look 3-spoke multi-function steering wheel (steering wheel rim (2.2a) with smooth leather finish with wood inserts, airbag module (2.2b) and steering wheel hub trim (2.2g) with smooth leather finish)

XCL*

Aluminium-look instrument cluster frame (aluminium-look: instrument cluster frame (2.0d))

XCK*

Aluminium-look rear section of center console (aluminium-look: rear of center console incl. ashtray lid (4.4a). Smooth leather finish in interior color: handbrake lever handhold trim (4.4b))

X70*

Door entry guards in stainless steel

XCM*

Aluminium-look roll-over bar

Audio and communication P16

Porsche Communication Management (PCM) (incl. GPS navigation module with separate DVD drive in front luggage compartment)

666

Telephone module for PCM (USA from 12/04)

668

Telephone handset for telephone module

618

Telephone preparation for mobile phone (only with CDR-24 radio. For USA also in combination with PCM)

490

Sound Package Plus (with 7 loudspeakers and CD storage tray in glove compartment)

680

BOSE® Surround Sound system (digital surround sound system with 11 loudspeakers, 325 W total output and CD storage tray in glove compartment)

P73

BOSE® Surround Sound system with wind deflector subwoofer on engine cover (replaces storage box)

692

CDC-4 CD autochanger (six-disc)

675

Preparation for Japanese navigation

o o o

461

Rod antenna

W

W

900

Factory collection

o

o

* Available no earlier than 01/05 ** Available no earlier than 02/05 *** Available no earlier than MY 06 Table 11: Individual equipment

115

Figure 144: Interior components

116

13 Colors

13.2 Convertible top colors

13.1 Exterior colors

The 3-layer material of the convertible top is available in four colors:

Solid colors (standard equipment)

Black, Stone Grey, Metropole Blue and

Black

Cocoa.

Guards Red Carrara White Speed Yellow

13.3 Interior colors

Figure 145: Convertible top: Black

Metallic colors (optional) Basalt Black Metallic

For leatherette/leather/Alcantara/

Atlas Grey Metallic

soft-touch paint/carpet.

Seal Grey Metallic

Headliner, sun visors and protective

Arctic Silver Metallic

strip all in Black.

Lapis Blue Metallic Midnight Blue Metallic

Standard colors

Lagoon Green Metallic

Black

Carmon Red Metallic

Stone Grey Sand Beige

Special colors (optional)

Palm Green

Slate Grey Metallic*

Ocean blue

Figure 146: Convertible top: Stone Grey

GT Silver Metallic* Cobalt Blue Metallic*

Special colors

Forest Green Metallic*

(optional; only in combination

Dark Olive Metallic*

with leather interior) Terracotta* Cocoa*

Two-tone

Figure 147: Convertible top: Metropole Blue

(optional; only in combination with leather interior) Black – Stone Grey*

Natural leather (optional; only in combination with leather interior) Natural Dark Grey* Natural Brown* Figure 148: Convertible top: Cocoa

* Available no earlier than 01/05

117

14 Maintenance costs (cost of ownership)

14.1

Maintenance

Further examples of reduced maintenance costs: the alternator, steering

The service intervals (oil change

servo pump and air conditioning in vehi-

From the very outset of development of

intervals) for the Boxster have been

cles with the new engines are driven by

the new Boxster, particular attention was

increased from 20,000 km /

a single, self-adjusting belt that only

paid to keeping the maintenance

12,000 miles for the previous model to

has to be changed every 90,000 km /

costs low and reducing them further

30,000 km / 20,000 miles. This means

60,000 miles (previously 80,000 km /

in comparison with the previous

fewer visits to the workshop for the

48,000 miles). The use of individual

model.

customer and a significant reduction in

ignition coils means that the only part

The “cost of ownership” (without de-

regular maintenance costs. Mainte-

of the ignition system that requires main-

preciation), that is, the maintenance, fuel

nance must be carried out at least every

tenance is the spark plugs – and these

and – if applicable depending on the

2 years whether or not the mileage

only have to be changed every

country-specific regulations – insurance

thresholds for regular maintenance are

90,000 km / 60,000 miles (previously

costs and the tax have been reduced.

reached. Unlike vehicles that are fitted

80,000 km / 48,000 miles) or every

In Germany, these measures have per-

with a maintenance interval computer,

4 years. The timing chains for the

mitted a reduction in the cost of owner-

both the Boxster and the Boxster S

camshaft and intermediate shaft are to-

ship of approx. 13 % for the Boxster

must be brought to the Porsche work-

tally maintenance-free.

and approx. 19 % for the Boxster S

shop after 30,000 km / 20,000 miles

(over 4 years at a mileage of

for their first regular service regardless

15,000 km / 9,400 miles per annum).

of how the car has been driven.

986

986 S

987

987 S

Average regular maintenance costs

€ 261

€ 261

€ 192

€ 192

Maintenance interval (km)

20,000

20,000

30,000

30,000

Hourly workshop rate (D)

€ 80

€ 80

€ 80

€ 80

Time required for minor maintenance

1.7

1.7

1.7

1.7

Time required for major maintenance

3.2

3.2

3.2

3.2

Average material costs for regular maintenance per annum

€ 128

€ 128

€ 94

€ 94

Average labour costs for regular maintenance per annum

€ 133

€ 133

€ 99

€ 99

Average additional maintenance costs per annum

€ 72

€ 72

€ 71

€ 71

Average maintenance costs per annum

€ 334

€ 334

€ 264

€ 264

Average tax per annum

€ 182

€ 216

€ 182

€ 216

Emission classification

EU 3 / D 4

EU 3 / D 4

EU 4

EU 4

Average fuel costs per annum

€ 1,417

€ 1,534

€ 1,403

€ 1,520

DIN consumption (litre/100 km)

9.7

10.5

9.6

10.4

Range (km)

660

610

667

615

Average insurance costs per annum

€ 2,140

€ 2,678

€ 1,701

€ 1,861

Insurance (third party/fully comprehensive/part cover)

14/28/27

15/29/27

12/26/25

12/27/25

Average total costs per annum

€ 4,074

€ 4,762

€ 3,549

€ 3,860

∆-total costs compared to 987 or 987 S

€ 525

€ 902

€0

€0

Table 12: Overview of cost of ownership (taking Germany as an example)

118

The new ATF light-running oil also enables the oil change intervals

14.2 Repair / insurance classification

to be extended from 160,000 km /

In countries such as Germany where the (comprehensive) insurance classifications depend, among other things, on

100,000 miles to 180,000 km /

A range of individual measures have

the anticipated amount of a potential

120,000 miles in vehicles with

been introduced for the new Boxster to

claim, the measures undertaken are ex-

Tiptronic S or manual gearbox.

reduce its sensitivity to minor dam-

pected to result in a more favourable

age and hence repair costs.

comprehensive classification (aim). In accordance with current system of

The most extensive optimisation meas-

calculation for the comprehensive classi-

ures have been carried out at the front

fication (as of 1.10.2003), the fully com-

of the vehicle. For example, new im-

prehensive type class (using the exam-

pact elements in the front bumper pro-

ple of Germany) will be downgraded

tect the body from extensive and costly

from 28 to 26 for the Boxster and from

damage in minor impacts. The front

29 to 27 for the Boxster S. This trans-

end can be quickly and easily re-

lates to a reduction in insurance costs

placed thanks to its simple fixtures

of approx. 21 % for the Boxster and

(clips). The new headlight design is

approx. 30 % for the Boxster S. (The

also less sensitive to damage than

definitive classification by the German

before.

Insurance Association, GDV (Gesamt-

The new line layouts for the radiator in

verband der Deutschen Versicherungs-

the front end and the reworking of the

gesellschaft e.V.) is expected mid-June

radiator connections have reduced the

2004.)

sensitivity of the new Boxster models to damage and hence reduced repair costs. The use of cost-effective brackets with desired break points prevents the radiator module being damaged in a slight collision, for example. When it comes to repair, the damaged plastic carriers can be replaced and the radiator module re-mounted. Furthermore the use of quick couplings throughout the cooling system pipework has reduced the amount of repair work required in the event of damage, again resulting in lower repair costs.

119

15 Technical specifications Unit

Boxster (987)

Boxster S (987 S)

Boxster (986)

Boxster (986 S)

MY 05

MY 04

Number of cylinders

6

6

Valves/cylinder

4

4

Engine

cm3/

Displacement (effective)

2,687/164

3,179/194

2,687/164

3,179/194

85,5 x 78

93 x 78

85,5 x 78

93 x 78

3.37 x 3.07

3.66 x 3.07

3.37 x 3.07

3.66 x 3.07

kW/ HP

176/ 240

206/ 280

168/ 228

191/ 260

min–1

6,400

6,200

6,300

6,200

270/199

320/236

260/192

310/229

4,700 – 6,000

4,700 – 6,000

4,700

4,600

62.5 84.9

60.1 81.8

cu in Bore x stroke

mm/in

Output at rpm Max. torque

Nm/lbft at rpm

min

–1

Compression ratio

11.0 : 1

Volumetric efficiency

kW/l HP/l

Engine management/ mixture preparation

65.5 89.3

64.8 88.1

Digital engine electronics ME 7.8-40 (increased computer capacity and more memory)

Fuel type (RON 95 can be used but will reduce performance)

Digital engine electronics ME 7.8

Super plus unleaded, RON 98

Super plus unleaded, RON 98

2,100 W

1,680 W

Generator

W

Starter (Tiptronic S)

kW

1.2 (1.7)

1.7

1.2 (1.7)

1.7

Battery capacity

Ah

60

70

60

70

Idle speed

rpm

680 ±40

680 ±40

Maximum engine speed

rpm

7,200

7,200

Transmission Manual gearbox Transmission ratio

1st gear

3.50

3.67

3.50

3.82

2nd gear

2.12

2.05

2.12

2.20

3rd gear

1.43

1.41

1.43

1.52

th

1.09

1.13

1.09

1.22

th

5 gear

0.84

0.97

0.84

1.02

6th gear

–

0.82

–

0.84

Reverse

3.44

3.33

3.44

3.55

Final drive ratio

3.75

3.88

3.56

3.44

4 gear

Clutch diameter

mm/in

240/9.45

120

240/9.45

Unit

Boxster (987)

Boxster S (987 S)

Boxster (986)

Boxster (986 S)

MY 05

MY 04

1st gear

3.66

3.67

2nd gear

2.00

2.00

3rd gear

Transmission Tiptronic S Transmission ratio

1.41

1.41

th

1.00

1.00

th

5 gear

0.74

0.74

Reverse

4.1

4.1

4 gear

Final drive ratio x intermediate ratio

4.38

3.91

4.02

3.73

Chassis Spring strut (McPherson design, Porsche-optimised); tube-type stabilisers

Spring strut (McPherson design, Porsche-optimised); stabilisers

min

+5 ± 5

+5 ±5

Front axle

Toe-in Camber

RoW

min

–10 ± 15

– 10 ± 30

Coasting

RoW

degrees

+ 8° ± 30’

+ 8° ± 30’

Spring strut (McPherson design, Porsche-optimised); tube-type stabilisers

Spring strut (McPherson design, Porsche-optimised); stabilisers

Rear axle

Toe-in per wheel

min

+5 ±5

+5±5

Camber

degrees

– 1° 20’

–1° 20’ ±30’

17.11:1 (center position) to 13,76:1 (variable)

16.9:1

2.62

2.98

375/14.8 (3-spoke steering wheel)

375/14.8 (3-spoke steering wheel)

4-piston aluminium monobloc fixed-caliper brake

4-piston aluminium monobloc fixed-caliper brake

Bosch ABS 8.0

Bosch ABS 5.7

Steering Steering ratio Steering wheel revolutions from lock to lock Steering wheel diameter

mm/in

Brake Brake calipers ABS Brake discs (FA and RA) Diameter x thickness

FA

RA

mm/in

mm/in

Internally ventilated and perforated


298 x 24/

318 x 28/

298 x 24/

318 x 28/

11.73 x 0.94

12.52 x 1.1

11.73 x 0.94

12.52 x 1.1

299 x 20/

299 x 24/

292 x 20/

299 x 24/

11.77 x 0.79

11.77 x 0.94

11.50 x 0.79

11.77 x 0.94

121

Internally ventilated


Unit

Boxster (987)

Boxster S (987 S)

Boxster (986)

MY 05

Boxster (986 S)

MY 04

Wheels/tires Standard:

Wheels front

Optional:

Optional:

6,5J x 17 RO 55

8J x 18 RO 57

6J x 16 RO 50

7J x 17 RO 55

rear

8J x 17 RO 40

9J x 18 RO 43

7J x 16 RO 40

8,5J x 17 RO 48

Tires front

205/55 ZR 17

235/40 ZR 18

205/55 ZR 16

205/50 ZR 17

rear

235/50 ZR 17

265/40 ZR 18

225/50 ZR 16

255/40 ZR 17

Wheels front

8J x 18 RO 57

7J x 17 RO 55

rear

9J x 18 RO 43

8,5J x 17 RO 48

Tires front

235/40 ZR 18

205/50 ZR 17

rear

265/40 ZR 18

255/40 ZR 17

Wheels front

8J x 19 RO 57

8J x 18 RO 50

9,5J x 19 RO 46

10J x 18 RO 47

Tires front

235/35 ZR 19

225/40 ZR 18

rear

265/35 ZR 19

265/35 ZR 18

rear

Winter wheels (17″): Wheels front

6,5J x 17 RO 55

7J x 17 RO 55

8J x 17 RO 40

8,5J x 17 RO 48

Tires front

205/55 R 17

205/50 R 17

rear

235/50 R 17

225/45 R 17

rear

Winter wheels (18″): Wheels front

8J x 18 RO 57

7,5J x 18 RO 50

rear

9J x 18 RO 43

9J x 18 RO 52

Tires front

235/40 R 18

225/40 R18

rear

255/40 R 18

265/35 R18

Air pressure (16″), 17″, 18″ front

bar/psi

2.0/29.01

2.0/29.01

rear

bar/psi

2.5/36.26

2.5/36.26

front

bar/psi

2.2/31.91

2.2/31.91

rear

bar/psi

2.5/36.26

2.5/36.26

Air pressure 19″

Weights

(dependent on equipment)

Unladen weight (DIN)

Manual gearbox

kg/lbs

1,295/2,855

1,345/2,965

1,275/2,811

1,320/2,910

Tiptronic S

kg/lbs

1,355/2,987

1,385/3,053

1,330/2,932

1,360/2,998

Unladen weight EU (DIN + 75 kg driver)

Manual gearbox

kg/lbs

1,370/3,020

1,420/3,131

1,350/2,971

1,395/3,075

Tiptronic S

kg/lbs

1,430/3,153

1,460/3,219

1,405/3,097

1,435/3,164

Manual gearbox Weight distribution front/rear Tiptronic S

%

47/53

45/55

46/54

45/55

%

45/55

44/56

44/56

44/56

Maximum gross weight

Manual gearbox

kg/lbs

1,610/3,549

1,630/3,594

1,600/3,527

1,630/3,594

Tiptronic S

kg/lbs

1,655/3,649

1,670/3,682

1,655/3,649

1,670/3,682

Permissible axle load

front

kg/lbs

775/1,709

775/1,709

775/1,709

775/1,709

Permissible axle load

rear

kg/lbs

915/2,017

940/2,072

915/2,017

940/2,072

Manual gearbox

kg/lbs

315/694

285/628

325/716

310/683

Tiptronic S

kg/lbs

300/661

285/628

325/716

310/683

Max. payload

122

Unit

Boxster (987)

Boxster S (987 S)

Boxster (986)

MY 05

Boxster (986 S)

MY 04

Performance Top speed

Manual gearbox (5-speed)

km/h / mph

256 / 159

–

253 / 157

–


km/h / mph

258 / 160

268 / 167

–

264 / 164

Tiptronic S (6-speed)

km/h / mph

250 / 155

260 / 162

248 / 154

258 / 160

Acceleration 0 – 100 km/h /


s

6.2

–

6.4

–

0 – 62 mph


s

6.2

5.5

–

5.7

Tiptronic S

s

7.1

6.3

7.3

6.4

Acceleration 0 – 160 km/h / 0 – 100 mph

Manual gearbox

s

14.5

12.3

15.0

13.2

Tiptronic S

s

16.4

13.9

17.2

14.9

Acceleration 0 – 1000 m

Manual gearbox

s

26.2

24.9

26.5

25.3

Tiptronic S

s

27.2

25.9

27.6

26.3

Acceleration /4 mile

Manual gearbox

s

14.5

13.8

–

–

Tiptronic S

s

15.1

14.3

–

–

Manual gearbox Flexibility (80 – 120 km/h / 50 – 75 mph) In penultimate Tiptronic S gear

s

6.9

6.8

6.9

7.4

s

7.7

7.2

–

–

1

Fuel economy

(= Tiptronic S) Urban

l/ 100 km

13.9 (15.2)

15.2 (16.3)

14.2 (15.3)

15.3 (16.4)

Extraurban

l/ 100 km

6.9 (7.8)

7.7 (7.9)

7.1 (7.9)

7.8 (8.0)

Total

l/ 100 km

9.6 (10.5)

10.4 (11.0)

9.7 (10.7)

10.5 (11.1)

CO2-emissions

g/km

229 (250)

248 (262)

233 (259)

255 (268)

US consumption combined

mpg

not yet available

not yet available

27.0

24.8

Typ. manufacturer’s specs. as per 80/1268/EEC

Exterior dimensions Length

RdW

mm/in

4,329/170.6

4,320/170.2

USA

mm/in

4,359/171.6

4,340/171.0

mm/in

1,801/70.9

1,780/70.1

mm/in

1,937/76.3

–

Height with standard chassis

mm/in

1,295/51.0

1,290/50.8

Height with PASM

mm/in

1,285/50.6

–

Wheelbase

mm/in

2,415/95.1

2,415/95.1

Width with door mirrors

123

Boxster (987)

Unit

Boxster S (987 S)

Boxster (986)

MY 05

Boxster (986 S)

MY 04

Exterior dimensions Track, front (DIN unladen)

Track, rear (DIN unladen)

16″

mm/in

–

–

1,465/57.7

–

17″

mm/in

1,490/58.7

–

1,455/57.3

1,455/57.3

18″

mm/in

1,486/58.5

1,486/58.5

1,465/57.7

1,465/57.7

19″

mm/in

1,486/58.5

1,486/58.5

–

–

16″

mm/in

–

–

1,528/60.2

–

17″

mm/in

1,534/60.4

–

1,514/59.7

1,514/59.7

18″

mm/in

1,528/60.2

1,528/60.2

1,504/59.3

1,504/59.3

19″

mm/in

1,522/59.9

1,522/59.9

–

–

0.29

0.30

0.31

0.32

Drag coefficient cd Frontal area A

m 2/ sq yrds

1.96/2.34

1.97/2.36

Drag cd x A

m 2/ yrds

0.57/0.68

0.59/0.71

Turning circle

m/ft

Front approach angle (DIN unladen)

1.94/2.32 0.60/0.72

0.62/0.74

11.1/36.4

10.9/35.8

Basic

degrees

12.0

12.0

PASM/ sports chassis

degrees

11.5/ –

– /11.5

Basic

degrees

16.0

15.5


degrees

15.5/ –

– /15.0

Basic

degrees

13.0

12.5


degrees

12.5/ –

– /12.0

Basic

mm/in

121/4.8

100/3.9


mm/in

111/4.4

90/3.5

Driver’s side

mm/in

1,090/42.9

1,072/42.2

Passenger side

mm/in

968/38.1

961/37.9

Shoulder room

mm/in

1,308/51.5

1,308/51.5

Elbow room

mm/in

1,355/53.4

1,356/53.4

Effective headroom2)

mm/in

972/38.3

972/38.3

front

l/cu ft

150/5.3

130/4.6

rear

l/cu ft

130/4.6

130/4.6

l/US gal

64 (10)/16.9 (2.6)

64 (10)/16.9 (2.6)

Rear departure angle (DIN unladen) Ramp angle (DIN unladen)

Ground clearance (DIN unladen, center of axles)

Interior dimensions Interior length1)

Luggage compartment volume Tank capacity

(incl. reserve)

Table 13: Technical specifications

1)

2)

Driver’s side: from pressed clutch pedal to rear lower hip point (DS). Passenger side: from heel point in front of firewall to rear lower hip point Distance from R point to roof lining; standardised dimension. The actual headroom cannot be specified as a single value due to the convex shape of the roof. It depends on the seat setting (fore/aft setting, backrest angle).

124

16 Comparison Competition in the premium roadster segment is becoming increasingly intense. The Boxster’s main competition in this segment are the BMW Z4 3.0i, Mercedes-Benz SLK 350, Nissan 350Z Roadster and Audi TT Roadster 3.2 quattro. Also in this segment, but less of a

Figure 149: Audi TT Roadster 3.2 quattro

Figure 150: BMW Z4 3.0i

16.1 An overview of main and secondary competitors

The BMW Z4, the most serious competi-

threat (and therefore called “secondary competitors”), are the Honda S2000 and the Chrysler Crossfire Roadster (SRT-6).

tion for the Porsche Boxster, was renewed in Autumn 2002 (USA), making it

The following competitor comparisons,

Audi launched its top-of-the-line TT Road-

the first of the three German premium

comprising data and information, side-

ster 3.2 quattro with 6-cylinder engine

roadsters to go undergo this evolution.

by-side comparisons and an overview of

and output of 250 HP in 2003. Initially

Produced in the USA like the previous Z3

product advantages/customer benefits

this model was only available with the

model, it was not introduced in Europe

(the latter two comparisons only for the

DSG direct transmission, however a

until six months later. The design of the

main competitors), provide an essential

model with a 6-speed manual gearbox

BMW Roadster proved contentious initial-

basis for argumentation in the sales dis-

was added later. The TT cannot com-

ly, however it represented a major step

cussion.

pete with the Boxster when it comes to

forward for BMW in terms of product

performance potential because of its

features and driving dynamics. As is

higher weight and pronounced nose-

commonplace at BMW, the 2.5i and the

heaviness (front/rear weight distribution:

3.0i were followed by the 2.2i (IAA 2003

60 % / 40 %). This fact is verified not

was chosen for the launch of this entry-

only by the standard measured values,

level model). However 4-cylinder variants

but also the lap times turned in by the

such as used in the Z3 are set to be-

Audi. Really the only way in which the

come a thing of the past, which is a fur-

TT Roadster 3.2 quattro can compete

ther indication of BMW’s intention to po-

with the Porsche is with its price of

sition the Z4 at a higher level. The ques-

€ 42,300 (Germany incl. 16 % VAT).

tion of whether there will be an M Roadster successor to the Z4 remains to be answered.

125

Figure 151: Mercedes-Benz SLK 350

Figure 152: Nissan 350 Z Roadster

Figure 153: Honda S2000

The new Mercedes-Benz SLK (R 171) is

Nissan launched the open offspring of

The Honda S2000 (€ 36,150, Germany

another serious competitor in the premi-

the 350Z Coupé, the 350Z Roadster, in

incl. 16 % VAT) underwent a facelift in

um roadster segment. Over 300,000 of

Spring 2003 (USA). The 350Z Coupé

Spring 2004 with a revised chassis and

its predecessor, the R 170, were pro-

was extremely successful – particularly

discreet cosmetic improvements. In

duced over a period of 8 years. With a

in the USA – with sales of approx.

terms of performance it is a direct rival

new aesthetic design in the style of the

50,000 units in the financial year 2003

to the Boxster with its powerful 2.0 litre

SLR and decidedly sporty attributes, the

making it an instant best-seller in the

4-cylinder engine (the most powerful 4-

aim at Mercedes-Benz is to position the

sports coupé segment. Almost 5,000 of

cylinder in the world with 9,000 rpm)

SLK as a fully fledged member of the

the roadster variant were licensed in the

and 240 HP (torque: 208 Nm/153 lbs),

Mercedes-Benz sports car family. The

USA in the first half of the financial year

however in terms of sales it is only of

more comprehensive offering in compari-

2004, however it is not expected in Eu-

relevance in the USA (and to a lesser ex-

son with the R 170 has been extended

rope until the end of 2004/beginning of

tent in Japan and Great Britain) (cf. quar-

by the SLK 350, which competes with

2005. The 350Z Roadster is inspired by

terly report III/03). The successor to the

the Boxster S in terms of performance

the long tradition of the Z car at Nissan.

S2000 is expected towards the end of

(3.5 litre V6 engine and 272 HP), but is

With its 3.5 litre V6 engine and 280 HP

2006.

priced more in line with the Boxster

output, the price tag for the 350Z Road-

(€ 43,384 incl. 16% VAT, Germany). By

ster in the USA will start from

including innovations such as Airscarf

US$ 34,050 (UVP). While it may be more

and the 7-speed 7G-Tronic automatic

favourably priced than the Boxster, it is

gearbox, Mercedes-Benz is working hard

also approx. 260 kg/573 lbs heavier,

to substantiate its claim of being a tech-

which means a less favourable power-to-

nological leader.

weight ratio.

126

Figure 154: Chrysler Crossfire Roadster SRT-6

The Chrysler Crossfire Roadster, presented at the Detroit Motor Show 2004, represents a new, striking roadster based on the technology of the “old” SLK (R 170). DaimlerChrysler’s intention with the Crossfire Roadster is to deliver an innovative vehicle concept through the marriage of progressive American design and German Mercedes-Benz technology. In terms of driving dynamics, however, the only real competition for the Boxster is from the SRT-6 version (“SRT” stands for “Street and Racing Technology”). The top of the Crossfire conceals the 3.2 litre V6 AMG compressor engine (330 HP) from the old SLK 32 AMG, combined with a more powerful brake system. The Crossfire SRT-6 Roadster, which up until now has only been available in the USA at a MSRP price of US$ 49,120, will remain a rare sight in Europe; after all, only 1,640 units of the basic coupé were sold in Europe in the first half of MY04.

127

128

1

Mid/rear

2/2

Seats/doors

6/2,687 / 164

Cylinders/ displacement

Integrated dry sump

EU4

248 (262)

10.4 (11.0)

5.5 (6.3)

270 / 199 @ 4,700-6,000

11.0 : 1

Super plus, RON 98

65.5 / 89.3

7.4 / 11.9

Integrated dry sump

EU4

229 (250)

9.6 (10.5)

6.2 (7.1)

256 (250) / 159 (155)

Max. torque in Nm/lbft at stated revs

Compression ratio

Fuel type

Volumetric efficiency (kW/l / HP/l)

Power-to-weight ratio (kg/kW / lbs / HP)

Engine lubrication

Emission classification 1)

CO2 emissions in g/km

Fuel consumption (average) in accordance with 80/1268/EEC

Acceleration 0 – 100 km/h / 62 mph [s]

Maximum speed in km/h / mph

250 / 155 [limited]

6.7 (6.6)

10.7 (10.0)

238

EU4

Forced-feed

8.5 / 13.8

57.7 / 78.6

Super plus, RON 98

11.3 : 1

320 / 236 @ 2,800 - 3,200

184/250 @ 6,300

6/3,189 / 195

6-cylinder V-engine, 24 valves, two overhead camshafts, intake and exhaust camshaft adjustment, switchable intake module, aluminium cylinder head and grey cast-iron engine block

2/2

Front/all-wheel

Roadster

Audi TT Roadster 3.2 quattro

) US-consumption and emission classification values were not available until copy deadline

268 (260) / 167 (162)

6.5 / 10.6

64.8 / 88.1

Super plus, RON 98

11.0 : 1

320 / 236 @ 4,700-6,000

176/240 @ 6,400

206/280 @ 6,200

6/3,179 / 194

6-cylinder horizontally opposed engine, 24 valves, two overhead camshafts per cylinder bank, intake camshaft adjustment (VarioCam), resonance intake system, aluminium cylinder head and engine block

2/2

Mid/rear

Roadster

Porsche Boxster S

Engine power output in kw/HP at stated revs

cm3/ cu in

6-cylinder horizontally opposed engine, 24 valves, two overhead camshafts per cylinder bank, intake camshaft adjustment (VarioCam), resonance intake system, aluminium cylinder head and engine block

Type/valves

Engine

Roadster

Engine position/drive

Porsche Boxster (2.7)

Segment

Concept

Criterion (values in brackets for optional AG)

16.2 Tabular comparison

250 (244) / 155 (152)

5.9 (6.2)

9.1 (9.5)

221 (231)

EU4

Forced-feed

7.6 / 12.3

57.1 / 77.8

Super plus, RON 98

10.2 : 1

300 / 221 @ 3,500

170/231 @ 5,900

6/2,979 / 182

6-cylinder in-line engine, 24 valves, two overhead camshafts, intake and exhaust camshaft adjustment (double VANOS), switchable intake module; aluminium cylinder head and engine block

2/2

Front/rear

Roadster

BMW Z4 3.0i

250 / 155 [limited]

5.6 (5.5)

10.6 (10.1)

255 (238)

EU4

Forced-feed

6.9 / 11.3

57.2 / 77.9

Super plus, RON 98

10.7 : 1

350 / 258 @ 2,400-5,000

200/272 @ 6,000

6/3,498 / 213

6-cylinder V-engine, 24 valves, two overhead camshafts per cylinder bank, intake and exhaust camshaft adjustment, switchable intake module, tumble flaps, aluminium cylinder head and engine block

2/2

Front/rear

Roadster

Mercedes-Benz SLK 350

250 / 155 [limited]

5.9 (no details)

11.1

273

EU3/ D4

Forced-feed

7.6 / 12.0

58.9 / 80.2

Super plus, RON 98

10.3 : 1

363 / 268 @ 4,800

206/280 @ 6,200

6/3,498 / 213

6-cylinder V-engine, 24 valves, two overhead camshafts per cylinder bank, variable timing control for inlet valves (NCVCS), aluminium cylinder head and engine block

2/2

Front/rear

Roadster

Nissan 350Z Roadster (US Variant Enthusiast)

250 / 155 [limited]

AG: 5.2

No details

No details

EU4

Forced-feed

6.1 / 10.1

76.9 / 104.7

Super plus, RON 98

9.0 : 1

420 / 310 @ 3,500-4,800

246/330 @ 6,100

6/3,200 / 195

6-cylinder V-engine with supercharging, 18 valves, one overhead camshaft per cylinder bank, aluminium cylinder head and engine block

2/2

Front/rear

Roadster

Chrysler Crossfire Roadster SRT-6

240 / 149

6.2

10.0

237

EU 3

No details

5.9 / 11.4

104.1 / 141.8

Super plus, RON 98

11.0 : 1

208 / 153 @ 7,500

177/240@ 8,300

4/1,997 / 122

4-cylinder in-line engine, 16 valves, two overhead camshafts, variable valve control (VTEC), Aluminium cylinder head and engine block

2/2

Front/rear

Roadster

Honda S2000

129

Optional: 5-speed Tiptronic S

Automatic transmission

Servo assistance rack- Servo assistance rack- Servo assistance and-pinion steering with and-pinion steering with maintenance-free rackvariable steering ratio variable steering ratio and-pinion steering

Steering

11.1/36.4

PSM (Porsche Stability Management) with ABS, ASR, ABD and MSR

Driving dynamics control/ system for improving traction

PSM (Porsche Stability Management) with ABS, ASR, ABD and MSR

Turning circle (in m/ft) 11.1/36.4

Electronic stability program (ESP) with ABS, ASR and electronic differential lock EDS

10.6/34.8

Longitudinal double transverse axle (LDQ axle), subframe

Strut suspension, wheels suspended individually on wishbones with trailing links and suspension struts (McPherson type, Porsche-optimised)

Rear axle


Optional: 5-speed automatic with Steptronic and 6-speed sequential manual transmission (SMG)

6-speed

BMW Z4 3.0i

Dynamic Stability Control (DSC) with on-demand traction mode

9.8/32.2

Electric steering (speed-dependent servo assistance)

Central control-arm rear axle

McPherson strut Double-jointed suspension with lower suspension-strut front triangular control arms, axle subframe

Optional: 6-speed direct transmission (DSG)

6-speed




Optional: 5-speed Tiptronic S

6-speed

Porsche Boxster S

Front axle

Chassis

5-speed (optional: 6-speed)


Manual gearbox

Transmission


Electronic stability program (ESP)

10.5/34.4

Hydraulic rack-andpinion power steering

Multi-link suspension with moving-off and brake torque support

Strut suspension with triple control arm, wheels suspended individually on wishbones and suspension struts (McPherson type) with brake torque support

Optional: 7-speed automatic transmission (7-G-Tronic)

6-speed


Part-locking viscous multi-plate clutch, Vehicle Dynamic Control (VDC), Traction Control System (TCS), electronic stability program (ESP)

11.2/36.7

Servo assistance rackand-pinion steering

Multi-link rear axle

Double wishbone front axle made of forged aluminium, suspension strut and stabiliser

Optional: 5-speed automatic transmission

6-speed


11.3/37.1

Rack-and-pinion steering (electric)

Double wishbone independent wheel suspension with double triangular control arms

Double wishbone independent wheel suspension with double triangular control arms

Not available

6-speed

Honda S2000

Electronic stability Locking differential program (ESP), traction control

9.8/32.2

Recirculating ball steering

Independent wheel suspension with fivelink axle

Double triangular control arms

5-speed automatic with Auto-Stick

Not available


130

Front

205/55 ZR 17 / 235/50 ZR 17

Tire size (front/rear)

275/628

0.30 x 1.97 = 0.59

64/16.9

0.29 x 1.96 = 0.57

64/16.9

Front: approx. 150/5.3 Front: approx. 150/5.3 180/6.5 Rear: approx. 130/4.6 Rear: approx. 130/4.6

Tank capacity in l/US gal

Luggage compartment capacity in l/cu ft

240/8.5 (convertible top open) / 260/9.2 (convertible top closed)

55/14.5

0.35 x 1.91 = 0.67

300/661


70 (9)/18.5

0.34 x 1.93 = 0.66

390/860

235/8.3

80/21.1

cd = 0.29

295/650

1,820/ 4012

Note: Specifications concerning competing vehicles have been taken from brochures and press reports and from dealer businesses and branches; accuracy cannot be guaranteed. All data for EU-specification models, with the exception of the Nissan 350Z Roadster and Chrysler Crossfire Roadster SRT-6 (US-specification models).

62/16.4

0.35 x 1.99 = 0.70

300/661

1,780 (1,800)/ 3924 (3968)


60/15.9

cd = 0.384

No details

No details

143/5.0

50/13.2

No details

290/639

1,535/ 3384

1,320/ 2910

1,245/ 2745

315/694

1,590 (1,610)/ 3505 (3549)

Approx. 1,631 (1,579)/ No details Approx. 3596 (3481)

Approx. 1,525 (1,545)/ 1,509/ Approx. 3362 (3406) 3327

Aerodynamics (cd x A)

1,860/ 4101

1,465 (1,485)/ 3230 (3274)

1,390 (1,410)/ 3064 (3108)

Max. payload kg/lbs

1,630 (1,670)/ 3549 (3682)

1,365 (1,385)/ 3009 (3053)

1,290 (1,310)/ 2844 (2888)

1,610 (1,655)/ 3549 (3649)

1,665/ 3671

1,560/ 3439

Permissible gross weight kg/lbs

1,430 (1,460)/ 3153 (3219)

1,345 (1,385)/ 2965 (3053)

1,370 (1,430)/ 3020 (3153)

2,400/94.6

215/45 R 17 / 245/40 R 17

7J x 17 / 8.5J x 17 LM

No details

11.11 x 0.47

282 x 12/

13.00 x 0.99

Weight (EC, unladen) kg/lbs

2,400/94.6

225/40 ZR 18 / 255/35 ZR 19

7.5 J x 18 / 9 J x 19

2-piston fixed calipers at front and rear

11.82 x 0.87

300 x 22/

300 x 25/

Internally ventilated at front

Honda S2000

1,295 (1,355)/ 2855 (2987)

2,649/104.4

225/45 R 18 / 245/45 R 18

8 J x 18 / 8 J x 18

4-piston fixed calipers

12.69 x no details

322 x no details

13.00 x 1.26

330 x 32/



Weight (DIN, unladen) kg/lbs

2,430/95.7

225/45 R 17 / 245/40 R 17

7.5 J x 17 / 8.5 J x 17

4-piston fixed calipers at front and 2-piston fixed calipers at rear

11.43 x 0.39

290 x 10/

12.77 x no details

324 x no details/



4,329 x 1,801 x 1,295/ 4,329 x 1,801 x 1,295/ 4,041 x 1,764 x 1,348/ 4,091 x 1,781 x 1,299/ 4,092 x 1,788 x 1,298/ 4,310 x 1,815 x 1,315/ 4,059 x 1,502 x 1,315/ 4,135 x 1,750 x 1,270/ 171.6 x 70.9 x 51.0 171.6 x 70.9 x 51.0 159.2 x 69.5 x 53.1 161.2 x 70.2 x 51.2 162.2 x 70.4 x 51.1 169.8 x 71.5 x 51.8 159.9 x 59.2 x 51.8 162.9 x 69.0 x 50.0

2,495/98.3

225/45 R 17

8 J x 17 RO 47

No details

11.58 x 0.75

294 x 19/

13.00 x 1.10

330 x 28/

Internally ventilated at front


2,415/95.2

2,429/95.7

225/45 R 17

7.5J x 17 RO 32

Twin-piston highperformance brake

10.09 x 0.87

256 x 22/

11.82 x 0.87

300 x 22/


BMW Z4 3.0i

Exterior dimensions (l x w x h in mm/in)

2,415/95.2

235/40 ZR 18 / 265/40 ZR 18

8 J x 18 / 9 J x 18

4-piston aluminium monobloc fixed calipers at front and rear

11.77 x 0.94

299 x 24/

13.16 x 1.26

334 x 32/



Wheelbase (mm/in)

Dimensions and weights

6.5 J x 17 / 8 J x 17

Wheel size (front/rear)

11.7 x 0.79

299 x 20/

12.53 x 1.1

318 x 28/

11.73 x 0.94

298 x 24/

4-piston aluminium monobloc fixed calipers at front and rear

[mm/in]

Rear

[mm/in]


Porsche Boxster S



Brake calipers

Brake discs

Brake system


16.3 Side-by-side comparison of Boxster/Boxster S and main competitors

and from dealer businesses and branches; accuracy cannot be guaranteed.

Note: The following tables offer a comparison of EU-specification models for the German market. Specifications concerning competing vehicles have been taken from brochures and press reports

Figure 155: Boxster and Boxster S (987)

131

16.3.1 Audi TT Roadster 3.2 quattro

Figure 156: Audi TT Roadster 3.2 quattro

132

Criterion

Advantages of the Boxster/Boxster S (987) vs. Audi TT Roadster 3.2 quattro Boxster and Boxster S

Engine / performance

• • • • • • • •

Mid-engine for good agility and traction Horizontally opposed engine concept for a lower center of gravity Higher volumetric efficiency (Boxster: +7.8 kW/l / +10.6 HP/l; Boxster S: +7.1 kW/l / +9.7 HP/l) Better power-to-weight ratio (Boxster: –1.1 kg/kW / –1.9 lbs/HP; Boxster S: –2.0 kg/kW / –3.2 lbs/HP) Better acceleration values 0 –100 km/h / 0 – 62 mph (Boxster: –0.5 s; Boxster S: –1.2 s) Higher top speed (Boxster: +6 km/h / 4 mph; Boxster S: +18 km/h / 11mph) Better fuel economy l/100 km (Boxster: –1.1; Boxster S: –0.3) Integrated dry sump lubrication

Further advantage for Boxster S: • Higher output ( +30 HP) Transmission

• No product advantages

Chassis

• • • •

Variable steering ratio for more agile driving behaviour and greater driving stability Variable suspension and damping (PASM) optional Sport Chrono Package for greater agility and driving pleasure optional Individual memory and evaluation of driving data with Sport Chrono Package Plus in combination with PCM optional • 19-inch wheels available as an option

Further advantage for Boxster S: • Porsche Ceramic Composite Brake (PCCB) optional • Larger wheel diameter for greater agility and better brake ventilation Exterior

• Electrically operated convertible top with one-touch/tip function up to 50 km/h / 30 mph for increased comfort • Side windows with water-repellent coating • Solution integrated in the vehicle concept: extending rear spoiler (instead of static rear spoiler) • Larger range of solid and metallic paints (+2/+5) • Larger range of convertible top colors (+1) • ParkAssist optional

Interior

• • • •

Heating/air-conditioning


Electrics, audio and communication

• • • • •

Additional transport capacity through luggage compartments front and rear (+100 l/3.5 cu ft) Better surface look and feel through the use of slush technology Higher-quality door-trim panel with storage bin and leather handle Adaptive fully electric sports seat with memory on driver’s side incl. electrically adjustable side bolsters optional • Fully electric seats with memory on driver’s side optional • Better readability and unique, high-quality look through white interior lighting • Wider range of customisation options through leather, aluminium, carbon and wood packages

CD radio as standard BOSE® Surround Sound system optional PCM with DVD navigation and 5.8″ display panel optional (instead of CD-ROM with TT) Multi-function steering wheel optional Rain sensor optional

Further advantage for Boxster S: • Alarm system as standard Safety and security

• Higher passive safety through head airbags in the door-trim panels


• Better aerodynamics through lower cd value (Boxster: –0.06; Boxster S: –0.05) • More agile driving behaviour through considerably lower weight (Boxster: –265 kg/–584 lbs; Boxster S: –205 kg/–452 lbs) • More agile cornering behaviour through shorter wheelbase • 15 kg/33 lbs greater payload on Boxster (987)

Cost

• Longer service intervals (30,000 km/18,693 mi instead of 25,000 km/15,533 mi) • Lower average fuel costs

133

16.3.2 BMW Z4 3.0i

Figure 157: BMW Z4 3.0i

134

Criterion

Advantages of the Boxster/Boxster S (987) vs. BMW Z4 3.0i Boxster and Boxster S


• • • • • • • •

Mid-engine for good agility and traction Horizontally opposed engine concept for a lower center of gravity Higher volumetric efficiency (Boxster: +8.4 kW/l / +11.4 HP/l; Boxster S: +7.7 kW/l / +10.5 HP/l) Better power-to-weight ratio (Boxster: – 0.2 kg/kW / – 0.4 lbs/HP; Boxster S: – 1.1 kg/kW / – 1.7 lbs/HP) Higher output (Boxster: +9 HP; Boxster S: +49 HP) Higher top speed (Boxster: +6 km/h / 4 mph; Boxster S: +18 km/h / 11 mph) Higher revving Integrated dry sump lubrication

Further advantage for Boxster S: • Better acceleration value 0 – 100 km/h / 0 – 62 mph (– 0.4 s) • Higher torque (+20 Nm/14.8 lbft) Transmission


Chassis

• • • •

Variable steering ratio for more agile driving behaviour and greater driving stability Variable suspension and damping (PASM) optional Sport Chrono Package for greater agility and driving pleasure optional Individual memory and evaluation of driving data with Sport Chrono Package Plus in combination with PCM optional • Wider wheels on the driving axle for better traction • 19-inch wheels available as an option

Further advantage for Boxster S: • Porsche Ceramic Composite Brake (PCCB) optional • Larger brake system at the front and rear axle incl. pad wear sensors • Larger wheel diameter for greater agility and better brake ventilation Exterior

• • • •

Electric convertible top with one-touch operation up to 50 km/h / 30 mph for increased comfort Side windows with water-repellent coating Larger range of solid, metallic and special colors (+1/+1/+5) Larger range of convertible top colors

Further advantage for Boxster S: • Wider wheels at the front and rear axle for a more sporty, dynamic design Interior

• • • • •

Better surface look and feel through the use of slush technology Better readability and unique, high-quality look through white interior lighting Electric seat backrest adjustment Wider range of customisation options through aluminium, carbon and wood packages Illuminated vanity mirror


• Air conditioning as standard


• BOSE® Surround Sound system optional • Garage door opener optional Further advantage for Boxster S: • Alarm system as standard

Safety and security



• • • • •

Cost

• Longer service intervals (30,000 km/18.639 mi instead of 25,000 km/15.533 mi)

Better aerodynamics through lower cd value (Boxster: – 0.06; Boxster S: – 0.05) Greater range through larger tank capacity (+9 l/+2.4 US gal) More agile cornering behaviour through shorter wheelbase 15 kg/33 lbs greater payload on Boxster (MY 05) Luggage compartment capacity 280 l/9.9 cu ft

135

16.3.3 Mercedes-Benz SLK 350

Figure 158: Mercedes-Benz SLK 350

136

Criterion

Advantages of the Boxster/Boxster S (987) vs. Mercedes-Benz SLK 350 Boxster and Boxster S


• • • • • • •

Mid-engine for good agility and traction Horizontally opposed engine concept for a lower center of gravity Higher volumetric efficiency (Boxster: +8.3 KW/l / +11.4 HP/l; Boxster S: +7.6 KW/l / +10.2 HP/l) Higher top speed (Boxster: 6 km/h / 4mph; Boxster S: +18 km/h / 11 mph) Better fuel economy l/100 km (Boxster: – 1.2; Boxster S: – 0.4) Higher revving Integrated dry sump lubrication

Further advantage for Boxster S: • Higher output (+8 HP) • Better power-to-weight ratio (– 0.4 kg/kW / – 0.7 lbs/HP) Transmission


Chassis

• • • • •

Variable steering ratio for more agile driving behaviour and greater driving stability Variable suspension and damping (PASM) optional Internally ventilated and perforated brake discs on the rear axle also Sport Chrono Package for greater agility and driving pleasure optional Individual memory and evaluation of driving data with Sport Chrono Package Plus in combination with PCM optional • 19-inch wheels available as an option

Further advantage for Boxster S: • Porsche Ceramic Composite Brake (PCCB) optional Exterior

• Electric convertible top with one-touch operation up to 50 km/h / 30 mph for increased comfort • Side windows with water-repellent coating • Extended range of convertible top colors (+4)

Interior

• Better surface look and feel through the use of slush technology • Adaptive fully electric sports seat with memory on driver’s side incl. electrically adjustable side bolsters optional • Electric seat backrest adjustment • Better readability and unique, high-quality look through white interior lighting • Wider range of customisation options through leather, aluminium, carbon and wood packages




• CD radio with 4 loudspeakers as standard

Safety and security



• Better aerodynamics through lower cd value (Boxster: – 0.05; Boxster S: – 0.04) • More agile driving behaviour through considerably lower weight (Boxster: – 95 kg/– 209 lbs; Boxster S: – 40 kg/– 88 lbs) • More agile cornering behaviour through shorter wheelbase • The full extent of the 280 litre/9.9 cu ft luggage compartment can be used and accessed even when the convertible top is open

Cost


Further advantage for Boxster S: • Alarm system as standard

137

16.3.4 Nissan 350 Z Roadster

Figure 159: Nissan 350 Z Roadster

138

Criterion

Advantages of the Boxster/Boxster S (987) vs. Nissan 350 Z Roadster Boxster and Boxster S


• • • • • • • •

Mid-engine for good agility and traction Horizontally opposed engine concept for a lower center of gravity Higher volumetric efficiency (Boxster: +6.6 kW/l/+9.1 HP/l; Boxster S: +5.9 kW/l/+7,9 HP/l) Better power-to-weight ratio (Boxster: –0.2 kg/kW/–0.1 lbs/HP Boxster S: –1.1 kg/kW/–1.4 lbs/HP) Higher top speed (Boxster: +6 km/h / 4 mph; Boxster S: +18 km/h / 11 mph) Lesser environmental burden through compliance with stricter emission standards (EU4) Better fuel economy l/100 km (Boxster: –1.8; Boxster S: –1.0) Integrated dry sump lubrication

Further advantage for Boxster S: • Better acceleration value 0–100 km/h / 0–62 mph (–0.4 s) Transmission


Chassis

• • • •

Variable steering ratio for more agile driving behaviour and greater driving stability Variable suspension and damping (PASM) optional Sport Chrono Package for greater agility and driving pleasure optional Individual memory and evaluation of driving data with Sport Chrono Package Plus in combination with PCM optional • Wider wheels on the driving axle for better traction • Tire sealing compound in place of the spare wheel results in more storage space and less weight

Further advantage for Boxster S: • Porsche Ceramic Composite Brake (PCCB) optional Exterior

• • • • •

Electric convertible top with one-touch operation up to 50 km/h / 30 mph for increased comfort Side windows with water-repellent coating Hardtop available Larger range of solid, metallic and special colors (+3/+5/+4) Larger range of convertible top colors (+2)

Interior

• Additional transport capacity through luggage compartments front and rear (+45 l/1.6 cu ft) • Better surface look and feel through the use of slush technology • Adaptive fully electric sports seat with memory on driver’s side incl. electrically adjustable side bolsters optional • Fully electric seats with memory on driver’s side optional • Better readability and unique, high-quality look through white interior lighting • Larger range of interior and leather colors (+4/+3) • Wider range of customisation options through leather, aluminium, carbon and wood packages




• • • • •

PCM with DVD navigation optional BOSE® Surround Sound system optional Alarm system with radar interior surveillance for Boxster optional Rain sensor optional Garage door opener optional

Further advantage for Boxster S: • Alarm system as standard Safety and security



• More agile driving behaviour through considerably lower weight (Boxster: –230 kg/–507 lbs ; Boxster S: –170 kg/–375 lbs) • 20 kg/44 lbs greater payload on Boxster (MY05)

Cost


139

BMW Z4 3.0i


Nissan 350Z Roadster

Boxster (987)

Boxster S (987 S)

Features


16.4 Overview of product advantages/ customer benefits

V6

R6

V6

V6

Product advantages/ customer benefits

Drive Design, number of cylinders

Horizon- Horizontally tally opposed opposed

Minimum vibration, lower center of gravity for high driving performance

6

6

+

+

0

–

–

–

Good agility and very good traction through greater weight on the driving axle (clear advantage/benefit)

Fuel consumption

++

++

0

++

+

0

Reduced cost of ownership

Exhaust emissions (g/km)

++

++

0

++

+

0

Lesser environmental burden and reduced cost of ownership

+

+

–

–

–

–

Ensures that the engine is lubricated even with extreme lateral and longitudinal acceleration (clear advantage/benefit)

Rack-and-pinion steering, variable steering ratio

++

++

–

+

+

0

Direct feedback from the road, greater agility and better handling with a high level of driving stability (clear advantage/benefit)

Standard chassis

++

++

+

++

+

+

Optimum compromise between performance-oriented and practical chassis

Systems for driving dynamics control and traction improvement

++

++

+

+

+

+

Very high active driving safety combined with increased agility and driving pleasure through Porsche Stability Management (PSM)

++

++

0

–

“Active sports chassis” extremely sporty performance with max. comfort, Porsche Active Suspension Management (PASM) (clear advantage/benefit)

Mid-engine

Integrated dry sump lubrication

Chassis

Active chassis/ sports chassis

+ + Sports Sports chassis chassis (option) (option)

PASM PASM (option) (option)

Sport Chrono Package (Sports programme) Large and wide wheel/tire combination as standard

++

++

–

+

+

–

Increased driving pleasure (clear advantage/benefit)

(option) (option)

++

+

0

0

+

+

More agile driving behaviour and better traction without sacrificing comfort, 19-inch available as an option (clear advantage/benefit)

++

++

++

++

+

++

Optimum deceleration values and high stability for high active driving safety

++

–

–

–

–

–

Brake system Multi-piston aluminium fixed-caliper brake system, perforated and internally ventilated discs, comprehensive ventilation Ceramic brake system (PCCB)

(option)

140

Even greater performance (clear advantage/benefit; unique selling point)

Boxster S (987 S)

Boxster (987)


BMW Z4 3.0i


Nissan 350Z Roadster

++

++

–

–

–

–

Features

Product advantages/ customer benefits

Interior Adaptive sports seats with seat-width adjustment

(option) (option)

Individual adaptation to the respective driver and driving situation (clear advantage/benefit; unique selling point)

Exterior Aerodynamics

++

++

0

0

0

+

Low drag for high top speed, low fuel consumption, low lift coefficient and optimum aerodynamic balance for safe handling

Roof system: convertible top operation up to 50 km/h /30 mph

++

++

–

–

–

–

Increased comfort through operation of the convertible top when driving (clear advantage/benefit; unique selling point)

Luggage compartment

++

++

––

+

++

+

Additional transport capacity through larger luggage compartment

with conv. top closed

Water-repellent side windows

++

++

–

–

–

–

Better visibility in traffic in bad weather conditions

Extended color range

++

++

+

0

++

0

Wider range of customisation options through availability of additional metallic and special colors

Convertible top colors

++

++

+

+

–

0

Wider range of customisation options through availability of additional convertible top colors

++

++

–

–

–

–

Effective head protection in a side impact (unique selling point)

Power-to-weight ratio

++

+

––

–

+

–

Low power-to-weight ratio for high acceleration potential and agility

Top speed

++

+

0

0

0

0

Safety and security Head airbags in the doors

Overview

Evaluation scheme:

The evaluations, particularly those of

++ significantly better

the competition, are based on techni-

+

better

cal data, official sales documents,

0

comparable

press releases as well as internal

–

worse

comparisons of Porsche AG. All infor-

– – significantly worse

mation is correct to the best knowledge, accuracy cannot be guaranteed.

141

Publisher's data Confidential!

This training material is intended solely for internal use within the Porsche sales organization.

Note: All information provided in this document is correct as at June 2004. Porsche reserves the right to alter design, technical specification, prices, equipment and final scope of delivery at any time prior to the market launch of the Boxster and the Boxster S. All descriptions are based on the EU model.

Country-specific changes as well as changes to product features are possible up to the launch and over the service life of the vehicle.

Date: June 2004.

© Dr. Ing. h.c. F. Porsche Aktiengesellschaft Department VO4 Marketing & Sales Training Porschestr. 15–19 71634 Ludwigsburg

Printed in Germany. Errors and alterations excepted.

142

U3

U4