brakes PORSCHE 911 2009 5.G Information Manual

Porsche Traction Management
(P TM).
Genuine high per formance calls
for more than just a power ful
engine. It also requires an ef fec-
tive means of delivering that
power to the road. One solution
to this is all -wheel drive. An
even bet ter one is the further-
enhanced Porsche Traction
Management (PTM), consisting

of active all -wheel drive with
electronically controlled multi -
plate clutch and including an
automatic brake differential (ABD)
and anti -slip regulation (ASR).
PTM improves vehicle dynamics
even further whilst ensuring that
none of the customar y traction
and driving safet y is lost. The
result is an even more enjoyable
sport y ride combined with
exceptional stability.
Torque is distributed actively
– and exceptionally quickly –
via an electronically controlled
multi-plate clutch. The advantage is that, through
continuous monitoring of the

driving conditions, a more imme -
diate response to changing
scenarios can be achieved. The
status is monitored with the aid
of on-board sensors. These are
used to measure a range of

values, including the rotational
speed of all four wheels, the
lateral and longitudinal accelera -
tion of the car, and the current
steering angle. The sensor data
is analysed in ‘real time’, enabling
immediate adjustments in front-
end drive torque as and when
required. If, for example, the rear
wheels lose traction under
acceleration, a greater proportion
of drive torque is automatically
transmit ted to the front axle. At
the same time, ASR prevents the
rear wheels from spinning by
adapting the engine power. When
cornering, the system controls
drive to the front wheels in order
to maintain optimum lateral grip.
On variable-grip surfaces, traction
is enhanced using the automatic
brake dif ferential (ABD). If a wheel threatens to spin, PTM brakes it
via ABD and in doing so transfers
more drive torque to the other
wheel on the same axle.
Assisting PTM is Porsche Stabilit y
Management (PSM). Combined,
these systems provide excellent
torque distribution – and there
-
fore outstanding performance –
in all driving conditions.
The benefits of PTM are most
evident in wet and snow y
conditions. In these conditions,
the 911 Turbo models of fer
breathtaking acceleration. In short, PTM provides greater
active safet y and greater

performance, combined with
exemplary balance.
Performance | Transmission
Active all -wheel drive
· 48 ·· 49 ·

Steering.
Sensitive and direct, the power-
assisted steering also of fers
accurate feedback from the road.
For a sportscar, driver effort is
minimal. In short: all the precision
of a race- designed system, yet
perfect for everyday road use.
One of the key features of the
steering system is the variable-
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.
Agilit y and feedback, however,
are maintained.
Turn the wheel harder and the
ratio becomes more direct,
enabling bet ter control through
low-speed corners as well as
easier parking manoeuvres.
The turning circle is a modest
10.9 metres.
19-inch 911 Turbo II wheels.
Fit ted as standard to 911 Turbo
models, the 19 -inch 911 Turbo II
wheels seamlessly combine
function and design.
The car has 8.5 J x 19 wheels
at the front combined with
235/35 ZR 19 t yres. At the rear
are 11 J x 19 wheels with
305/30 ZR 19 t yres. The wheels
are forged, of course, to reduce
weight and unsprung masses.
The material is also very strong,
making it possible to achieve a
fine spoke wheel design which
provides bet ter ventilation of the
brakes.
The five-spoke design is st ylish
and distinctive. The linear
t win spokes have a high -sheen
surface finish, contrasting
with the titanium - coloured base
paint. Part of the wheel rim
also has a high -sheen finish.
The 19 -inch 911 Turbo II wheels.
Proof that dynamism can be
expressed visually.
19-inch RS Spyder wheels with
central locking device.
Reminiscent of the classic
RS Spyder design, these forged
aluminium wheels with a
motorsport-derived central locking
device are available on request
for the 911 Turbo models and are
fit ted as standard to the new
911 Turbo S models. By reducing
rotating masses, they deliver
an even more agile driving expe -
rience. Benefiting from innovative
ongoing developments to the
engineering conventionally used
only in a racing environment, the
striking central locking devices
of fer ef fective protection against
corrosion and are easy to clean.
Alternatively, the 19 -inch
911 Turbo II wheels are available
for the 911 Turbo S models at no
extra cost.
Tyre Pressure Monitoring
(TPM).
Tyre Pressure Monitoring,
included as standard equipment,
warns against t yre pressure
loss. The driver is informed via
the on -board computer display.
The driver can check the pres -
sures of all four t yres from the
instrument cluster. Each time
the t yres are re-inflated, or when -
ever a wheel has been changed,
the updated t yre pressures are
displayed quickly – for increased
comfort and safet y.
19 - inch 911 Turbo II wheel
19 - inch RS Spyder wheel with central locking device
Performance | Chassis
· 54 ·· 55 ·

Porsche Stability Management
(PSM).
PSM, an automatic vehicle sta-
bilit y control system designed to
aid the driver in critical road
scenarios, is fit ted as standard.
Sensors monitor the direction,
speed, yaw velocit y (speed of
rotation around the vertical axis)
and lateral acceleration of the car.
Using this information, it is
possible to calculate the actual
direction of travel at any given
moment. If the car begins to over -
steer or understeer, PSM applies
selective braking on individual
wheels to restore stabilit y and
optimum speed. Whenever PSM is
required to intervene, an indicator
light in the cockpit flashes.
When accelerating on wet or other
low-grip surfaces, PSM combines
with PTM and uses the automatic
brake differential (ABD) and anti-
slip regulation (ASR) functions to
maintain traction and stabilit y.
Included as standard equipment,
PSM assists with high -precision
inputs that enhance the agilit y of
each model. When ‘Sport ’ mode is selected on the Sport Chrono
Package Turbo with dynamic
engine mount system (page 58),
the PSM threshold is raised

higher still to enable greater
driver involvement – particularly
at speeds of up to 70 km/ h
(44 mph).
PSM includes ABS to help mini -
mise braking distances. System
inputs are smooth and precise
for greater driver comfort.
Active safet y is further enhanced
with the aid of t wo additional
brake functions: electronic brake
prefill and brake assist.
The prefill function is automati-
cally enabled whenever the

throt tle pedal is suddenly released.
The pressure in the brake lines
is marginally increased, bringing
each of the pads into light contact
with the corresponding disc. If
the driver then decides to use the
brakes, the system can apply
the maximum force with virtually
no delay.
The brake assist function, by
contrast, is specifically designed
for use in emergency stops.
When the speed of brake pedal
application and the pressure on
the brake pedal exceed a prede -
fined threshold, the hydraulics
automatically apply the necessary
pressure to achieve maximum
deceleration. For a more actively involved

driving experience, PSM can be
manually disabled. PSM remains
present in the background and
will only intervene under heav y
braking where at least one front
wheel requires ABS assistance
(in ‘Sport ’ mode, if both front
wheels require assistance). The
automatic brake differential

(ABD) remains active at all times.
Vehicle yaw
Car steers of f line
Vehicle yaw
Car steers of f line PSM corrects
direction and
stabilises car
PSM corrects
direction and
stabilises carOversteer without PSM
Oversteer with PSM
Understeer with PSM
Understeer without PSM
Performance | Chassis
· 56 ·· 57 ·

Brakes.
On a 911 Turbo, there is one thing
above all else that both the accel-
erator and brake pedals deliver
when you press them – and that ’s
excitement.
The standard braking system of
the 911 Turbo models features
six-piston fixed calipers at the
front and four-piston fixed calipers
at the rear. The red-painted calipers have a
monobloc (one-piece) aluminium
construction of fering greater

stabilit y, bet ter ‘bite’ characteris -
tics under heav y braking and a
further reduction in unsprung
weight. The brakes are quick to
apply and release, whilst the
pedal travel is short and the bite
point precise and consistent.
The front and rear discs have a
generous diameter of 350 mm.
All four discs are cross- drilled for
bet ter performance in the wet.
The distinctive drill-hole pat tern
enables a faster response by
allowing rapid dispersal of the
water vapour generated under
braking.
The discs are also internally
vented for bet ter heat dispersal.
The result: excellent stabilit y in
all conditions. Cooling air is
directed onto the brakes to further
improve performance. A powerful
9-inch tandem brake booster unit
enables easier pedal inputs.
Braking distances are further
reduced with the aid of t wo
functions in the standard Porsche
Stabilit y Management (PSM):
electronic brake prefill and brake
assist (page 57). The new 911 Turbo S models
come equipped with the Porsche
Ceramic Composite Brake (PCCB,
see following pages) as standard.
Standard front brake (911 Turbo)
Responsibility
| Safet y
· 66 ·· 67 ·

Technical data
911 Turbo / 911 Turbo Cabriolet
Engine
C y linders 6
Displacement 3,800 cm
3
Power (DIN)
at368 kW (500
hp)
6,000 – 6,500 rpm
Max. torque at 650 Nm at 1,950 – 5,000 rpm
with ‘overboost ’ 700 Nm at 2,100 – 4,000 rpm
Compression ratio 9 . 8 : 1
Transmission
Layout All-wheel drive with electronically controlled multi-plate clutch
6-speed manual gearbox Standard
7-speed PDK Optional
Chassis
Front axleMcPherson strut suspension
Rear axle LSA multi - link suspension
Steering Variable steering ratio, power-assisted (hydraulic)
Turning circle 10.9 m
Brakes 6 - piston monobloc aluminium fixed calipers at front, 4 - piston monobloc
aluminium fixed calipers at rear, discs internally vented and cross- drilled
Vehicle stabilit y system Porsche Stability Management (PSM)
Anti - lock braking system ABS 8.0
Wheels Front
Rear 8.5 J x 19 ET 56
11 J x 19 ET 51
Tyres Front
Rear 235/35 ZR 19
305/30 ZR 19
Technical data
911 Turbo 911 Turbo Cabriolet
Weights
Manual gearbox/PDK Manual gearbox / PDK
Unladen weight (DIN) 1,570 k g / 1,59 5 k g 1,6 4 5 k g / 1,670 k g
Unladen weight (EC)* 1,6 4 5 k g / 1,670 k g 1,72 0 k g / 1,74 5 k g
Permissible gross weight 1,93 5 k g / 1,9 6 0 k g 1,995 kg /2,020 kg
PerformanceManual gearbox/PDK Manual gearbox/PDK
Top speed km/ h (mph) 312 (19 4) / 312 (19 4)312 (194)/312 (194)
0 –100 km/ h (0 – 62 mph) 3.7 secs/3.6 secs (3.4 secs
**)3.8 secs/3.7 secs (3.5 secs**)
0 –160 km/ h (0 –99 mph) 7.8 secs/7.7 secs (7.4 secs
**)8.1 secs/8.0 secs (7.7 secs**)
0 –200 km/ h (0 –124 mph) 11.9 secs/11.6 secs (11.3 secs
**) 12.4 secs/12.1 secs (11.8 secs**)
Flexibilit y 80 –120 km/ h (50 –75 mph)
in 5th gear
Acceleration 80 –120 km/ h (50 –75 mph) 3.7
secs/–
–/2.1 secs 3.8
secs/–
–/2.2 secs
Fuel consumption/emissions***Manual gearbox/PDK Manual gearbox/PDK
Urban in l/100 km (mpg) 16.5 (17.1)/16.5 (17.1)16.7 (16.9)/16.7 (16.9)
Extra urban in l/100 km (mpg) 8.3 (34.0)/8 1 (34.9)8.4 (33.6)/8.2 (34.4)
Combined in l/100 km (mpg) 11. 6 ( 2 4 . 4 ) / 11. 4 ( 2 4 . 8 )11.7 (24.1)/11.5 (24.6)
CO
2 emissions g/km 272/268275/270
Dimensions/aerodynamics
Length 4,450 mm4,450 mm
Width (incl. exterior mirrors) 1,852 mm (1,952 mm)1,852 mm (1,952 mm)
Height 1,300 mm1,300 mm
Wheelbase 2,350 mm2,350 mm
Luggage compartment volume ( VDA) 10 5 l i t res10 5 l i t res
Tank capacity 67 litres67 litres
Drag coef ficient c
w = 0.31cw = 0.32
*** Data determined in the NEDC (New European Driving Cycle) in accordance with the Euro 5 (715/2007/ EC and 692/2008/ EC) measurement
method. The figures do not refer to an individual vehicle nor do they constitute part of the of fer. They are intended solely as a means of
comparing dif ferent t ypes of vehicle. You can obtain further information about individual vehicles from your Porsche Centre. Fuel consump -
tion calculated for vehicles with standard specification only. Optional equipment may af fect fuel consumption and per formance.
Some of the vehicles illustrated in this brochure are fit ted with optional equipment which is available at additional cost.

All information regarding supplied equipment, appearance, per formance, dimensions, weight, fuel consumption and
running costs is correct to the best of our knowledge at the time of going to press. Porsche reserves the right to alter
specifications and other product information without prior notice.* Weight is calculated in accordance with the relevant EC Directives and is valid for vehicles with standard specification only.
Optional equipment increases this figure. The figure given includes 68 kg for the driver and 7 kg for luggage.
** Figures for PDK include the optional Sport Chrono Package Turbo with SPORT PLUS but ton selected.
· 110 ·· 111 ·

Technical data
** * Data determined in the NEDC (New European Driving Cycle) in accordance with the Euro 5 (715/2007/ EC and 692/2008/ EC) measurement
method. The figures do not refer to an individual vehicle nor do they constitute part of the of fer. They are intended solely as a means of
comparing dif ferent t ypes of vehicle. You can obtain further information about individual vehicles from your Porsche Centre. Fuel consump -
tion calculated for vehicles with standard specification only. Optional equipment may af fect fuel consumption and per formance.
Some of the vehicles illustrated in this brochure are fit ted with optional equipment which is available at additional cost.
All information regarding supplied equipment, appearance, per formance, dimensions, weight, fuel consumption and
running costs is correct to the best of our knowledge at the time of going to press. Porsche reserves the right to alter
specifications and other product information without prior notice. * Weight is calculated in accordance with the relevant EC Directives and is valid for vehicles with standard specification only.

Optional equipment increases this figure. The figure given includes 68 kg for the driver and 7 kg for luggage.
** Values with SPORT PLUS but ton selected.
911 Turbo S / 911 Turbo S Cabriolet
Engine
Cylinders 6
Displacement 3,800 cm
3
Power (DIN)
at 390 kW (530 hp)

6,250 – 6,750 rpm
Max. torque at 700 Nm at 2,100 – 4,250 rpm
Compression ratio 9 . 8 : 1
Transmission
Layout All -wheel drive with electronically controlled multi - plate clutch
7-speed PDK Standard
Chassis
Front axleMcPherson strut suspension
Rear axle LSA multi - link suspension
Steering Variable steering ratio, power-assisted (hydraulic)
Turning circle 10.9 m
Brakes Porsche Ceramic Composite Brake (PCCB):
6 - piston monobloc aluminium fixed calipers at front, 4 - piston monobloc aluminium fixed calipers at rear, discs internally vented and cross-drilled
Vehicle stabilit y system Porsche Stability Management (PSM)
Anti - lock braking system ABS 8.0
Wheels Front
Rear 8.5 J x 19 ET 56
11 J x 19 ET 51
Tyres Front
Rear 235/35 ZR 19
305/30 ZR 19
911 Turbo S 911 Turbo S Cabriolet
Weights
PDK PDK
Unladen weight (DIN) 1,5 8 5 k g 1,6 6 0 k g
Unladen weight (EC)* 1,6 6 0 k g 1,73 5 k g
Permissible gross weight 1,9 5 0 k g 2,010 k g
PerformancePDK PDK
Top speed km/ h (mph) 315 (19 6)315 (19 6)
0 –100 km/ h (0 – 62 mph)
**3.3 secs 3.4 secs
0 –160 km/ h (0 – 99 mph)
**7. 1 s e c s 7. 4 s e c s
0 –200 km/ h (0 –124 mph)
**10. 8 s e c s 11.3 secs
Acceleration 80 –120 km/ h (50 –75 mph) 2.0 secs 2.1 s e c s
Fuel consumption/emissions***PDK PDK
Urban in l/100 km (mpg) 16.5 (17.1)16.7 (16.9)
Extra urban in l/100 km (mpg) 8 1 (34.9)8.2 (34.4)
Combined in l/100 km (mpg) 11. 4 ( 2 4 . 8 )11.5 (24.6)
CO
2 emissions g/km 268270
Dimensions/aerodynamics
Length 4,450 mm4,450 mm
Width (incl. exterior mirrors) 1,852 mm (1,952 mm)1,852 mm (1,952 mm)
Height 1,300 mm1,300 mm
Wheelbase 2,350 mm2,350 mm
Luggage compartment volume ( VDA) 10 5 l i t res10 5 l i t res
Tank capacity 67 litres67 litres
Drag coef ficient c
w = 0.31cw = 0.32
· 112 ·· 113 ·

Index
Option Page
A
Air conditioning 81
A irbags 71
All-wheel drive 48
Aluminium Look 101
Anti-theft protection 84
Audio interface 88
Audio system 86
A xle concept 52
B
Bodyshell structure 70
BOSE
® Surround Sound
System 88
Brakes 66
C
Cabriolet 22
Carbon 101
CD/ DVD autochanger 86
Ceramic brake 68
Chassis 52
Child seats 83
Colours, exterior 92
Colours, hood 93
Cruise control 85
D
Design 16
Direct fuel injection (DFI) 32
Dry-sump lubrication 33
Dynamic cornering lights 65
Dynamic engine mount
system 60
E
Electronic engine
management 38
Engine 30
Engine management 38
Environment 74
Exhaust emission control 75
Exhaust gas turbocharging 36
Exhaust system 41
Expansion intake manifold 40
Exterior 16
Exterior mirrors 84
F
Factory collection 97
Fuel system 76
G
Glass rear screen 24
GPS navigation system 86
H
Hardtop 25, 99
Headlight cleaning system 64
Headlights 64
HomeLink
®
(garage door opener) 84
Hood 24
I
I numbers 98
Ignition 39
Instruments 81
Interior 80
L
Launch Control 59
Lighting 65
Lighting system 64
Light weight design 34
Luggage compartment 84
M
Manual gearbox 46
Model range 18
MP3 88
Multifunction steering wheel 44
N
Navigation 86
O
Oil supply 33
On-board computer 81
P
Pa rk A ssist 85
Personalisation 90
Porsche Active Suspension
Management (PASM) 53
Porsche Ceramic Composite
Brake (PCCB) 68
Porsche Communication
Management (PCM) 86
Porsche Doppelkupplung
(PDK) 42Porsche Side Impact

Protection System (POSIP) 72
Porsche Stabilit y
Management (PSM) 56
Porsche Torque Vectoring
(PT V) 50
Porsche Traction
Management (PTM) 48
Power and performance 110, 112
Power steering 54
R
Radio 86
Recycling 76
Roll-over protection 72
Roof transport system 84
S
Safet y 64
Seats 82
S e rv ic i n g 41
SPORT but ton 58
Sport Chrono Package Turbo 58
Steering 54
Steering wheels 44
T
Technical data 110
Touchscreen 86
Transmission 42
T V tuner 87
Tyre Pressure
Monitoring (TPM) 55
U
Universal audio interface 88
V
Variable Turbine Geometry
(V TG) 36
VarioCam Plus 38
Vehicle tracking system 84
Voice control system 87
W
Wheels 54
Wind deflector 25
Wood, macassar 101
Index
· 114 ·· 115 ·