tyre pressure PORSCHE 911 TURBO 2004 4.G Information Manual

The power-assisted steering is
not only sensitive and direct,
it also offers accurate feedback
from the road. Minimal driver
effort is required when parking,
while the turning circle is small
at just 10.9 metres – despite
the generous tyre width.
One of the key features of
the new steering system is thevariable-ratio gearing. Around the
straight-ahead position, the ratio
is less direct, enabling smoother
manoeuvres on the motorway. It
also reduces the risk of excessive
steering inputs which could
destabilise the car at high speed.
Turn the wheel harder and
the ratio becomes more direct,
enabling better manageability
through low-speed corners as well
as easier parking manoeuvres.
In all scenarios, the system
provides excellent feedback
while complementing the car’s
natural agility.
In short: all the precision of a
race-proven system, yet perfect
for everyday road use.
· 54 ·· 55 ·The new 911 Turbo |
Chassis
Wheels.
The final elements in the drivetrain
system are, of course, the
wheels and tyres. On the new
911 Turbo, we’ve used 19-inch
forged alloys as standard. The
front wheel dimensions are
8.5J x 19 with
235/35 ZR 19
tyres. Rear wheel size is 11J x 19
with 305/30 ZR 19 tyres. The
new wheel design features a
special two-tone look for even
greater visual impact. The sides
of each spoke have a titanium
paint finish, while the entire front
surface, including the flange, has
a polished finish.
Tyre Pressure Monitoring (TPM),
included as standard equipment,
provides early warning of
tyre pressure loss. The driver is
i
nformed via the on-board
computer display as well as a
separate indicator light.A range of optional 18 and 19-inch
winter wheels (all snow chain-
compatible) are available from
Porsche Tequipment. Vehicles
equipped with the optional
Porsche Ceramic Composite
Brake (PCCB) may only be fitted
with 19-inch winter wheels.
19-inch Turbo wheel
Steering.
Accuracy, comfort and excellent road contact.

Porsche Communication
Management (PCM). This
comprehensive system features
satellite navigation with a
separate DVD drive in the
luggage compartment for
the single navigation disc.
The one-touch switches on the
centre console are logically
positioned for optimum ease of
use. All instruments are perfectly
placed within the driver’s field of
vision. The air-conditioning system
is fully automatic and features a
highly effective active carbon filter.
This added convenience gives
you greater freedom to enjoy the
driving experience.
The tinted front glass and generous
rear screen offer excellent fore-
and-aft visibility. The front side
windows have a water-repellent
finish, which automatically
disperses moisture and dirt.
The result: optimum visibility in
poor weather conditions.
Instruments.
The classic arrangement of five
round instruments provides a
clear overview of all key information.
The digital display in the centre-left
dial (speedometer) provides main
and trip odometer readings. The
central rev counter, featuring the
‘turbo’ logo, includes the standard
on-board computer display.
This multi-purpose field contains a
permanent digital speedometer
as well as the following optional
information: boost pressure,
average speed, average fuel
consumption, tyre pressure,
current radio station, navigation
instructions and remaining range
till empty. When ‘Sport’ mode
is selected on the optional Sport
Chrono Package Turbo, the
temporary increase in torque is
clearly indicated using an arrow
symbol in the boost pressure
display. The third display, in the
centre-right dial, contains a
clock and external temperature.
The dot-matrix technology used in
each of these displays provides
a high resolution for icons and
text. Design and legibility are
further enhanced with brilliant
white backlight illumination.
· 78 ·· 79 ·The new 911 Turbo |
Comfort
Interior.
For the pure enjoyment of performance.
The passenger compartment in the
new 911 Turbo is another example
of uncompromising design. As you
would expect, it offers the highest
standards of ergonomics, comfort
and quality. The seats, dashboard,
doors and rear side panels are
finished in leather as standard. Atthe centre of the cockpit is a new
gear lever design that’s exclusive
to the new 911 Turbo.
Other standard features include
a three-spoke sports steering
wheel offering 40 mm of
adjustment for both height and
reach. A three-spoke multi-function
steering wheel – available as
optional equipment – provides
direct access to audio, navigation
and (if fitted) telephone functions.
The standard audio package
is the latest evolution of

Antenna diversity.
The PCM package includes four
separate antennae which are
discreetly incorporated within the
windscreen glass. This simple
solution enables the twin-tuner
radio system to find the strongest
possible signal, thereby enhancing
FM reception.
On-board computer.
The PCM computer offers a wide
range of information, including
average fuel consumption, average
speed, range till empty, journey
time and external temperature.
It can also be used to view data
from the optional Tyre PressureMonitoring (TPM). The computer
is operated using a separate
control stalk, displaying key infor-
mation in the central instrument
dial. The same control stalk
is used to operate the timing
functions in the optional Sport
Chrono Package Turbo.
Electronic logbook.
This optional addition to PCM
enables automatic logging on
every journey of mileage, route
distance, date and time as well as
starting location and destination.
Data can be downloaded from
PCM via an infrared port and
processed on a computer using
software included with the
package. This easy-to-use option
fulfils all the requirements for
automatic logbooks as specified
by the German revenue authorities.
Telephone module.
The optional GSM telephone has
a 12-digit keypad and a hands-
free facility offering excellent callquality. The hands-free microphone
is located next to the steering
column and is ideally positioned
for the driver. The telephone
system supports SMS (text)
messaging as well as card-free
calls to emergency services. An
optional passive (keyless) handset
with leather-trimmed console
enables clearer communication
as well as greater privacy when
making a call.
CDC-4 CD autochanger.
This optional CD autochanger has
a total capacity of six audio
CDs and installs beneath a panel
in the luggage compartment.
An autochanger preparation is
included as standard.
· 88 ·· 89 ·The new 911 Turbo |
Comfort
Passive (keyless) handset

L
Leather 104, 112
Limited-slip differential,
mechanical 56
Loudspeakers 90
LSA concept 53
Lubrication 31
Luggage compartment 84
M
Manual gearbox 45
Materials 95
MOST
®bus 90
MP3 playback 86
Multifunction steering wheel 78
Multi-plate clutch,
electronically controlled 48
N
Navigation expansion module 87
Navigations system 87
Noise 97
O
On-board computer 88
On-board diagnostics 40
Optional equipment 108
P
ParkAssist 82
Performance display 60
Personalisation 98
Porsche Active Suspension
Management (PASM) 56
Porsche Ceramic
Composite Brake (PCCB) 70
Porsche Communication
Management (PCM) 86
Porsche Side Impact
Protection (POSIP) 75
Porsche Stability
Management (PSM) 58
Porsche Traction
Management (PTM) 48
R
Rear wiper 83
Recycling 95
Roof transport system 84
S
Safety, active 66
Safety, passive 72
Seats 80
Seats, rear 81
Service 122
Servicing 44, 97
Sport button 60
Sport Chrono Package Turbo 60Sports seats 80
Sports seats, adaptive 80
Steering 54
Stereo lambda control 44
Sunroof, slide/tilt 83
Suspension 52
T
Tandem brake booster 69
Technical data 126
Telephone 89
Timer 60
Tiptronic S 46
Transmission 126
Tyre Pressure
Monitoring (TPM) 55
V
Variable Turbine
Geometry (VTG) 32
Variable valve timing 39
VarioCam Plus 38
Vehicle tracking system 84
W
Water- cooling 40
‘Welcome Home’ lighting 82
Wheels 55
Wood, macassar 115
Wood, sycamore 116
· 129 ·
A
Air conditioning, automatic 79
Airbags 74
Alloy engine 30
All-wheel drive 48
Aluminium Look 118
Antenna diversity 88
Anti-theft protection 84
Audio system 86, 119
AudioPilot
®91
Axle concept 52
Axle, front 52
Axle, rear 53
B
Bi-Xenon lighting 66
Bodyshell 72
BOSE
®Surround
Sound System 90
Boxer engine 28, 30
Braking system 68
C
Carbon 117
Catalytic converters 44
CD autochanger 89, 119
Ceramic brakes 70
Child seats 81
Colours 100
Colours, interior 104
Colours, special interior 105
Communication 119
Cross-flow cooling 40
Cruise control 83
D
Design 20
Driver memory function 63
Dry-sump lubrication 31
DVD navigation drive 87
E
Electronic logbook 89
Emissions control 94
Engine management system 40
Exhaust system 44
F
Factory collection 120
Fire extinguisher 82, 111
Foglights 67
Fuel injection, sequential 42
Fuel system 97
G
GPS navigation system 87
GSM telephone 89
H
HomeLink®83
Hot-dip galvanised sheet steel 73
I
Ignition 43
Instruments 79
Interior 78
K
Knock control,
cylinder-specific 40
· 128 ·
Index