2009 PORSCHE 911 weight

Porsche Torque Vectoring (PTV).
Porsche Torque Vectoring (stand-
ard on 911 Turbo S models,
optional for 911 Turbo models), with variable torque distribution
to the rear wheels and a mechan
-
ical limited-slip rear differential,
is a system that actively enhances
vehicle dynamics and stabilit y. As a function of steering angle
and steering speed, accelerator
pedal position, yaw rate and

vehicle speed, PT V is able to
improve steering response and steering precision significantly

by specific braking of the right or
left rear wheel.
In simple terms, this means that
when the car is driven assertively
into a corner, moderate brake
pressure is applied to the inside
rear wheel. Consequently, excess
drive force, which varies depend -
ing on the braking force applied
to the inside rear wheel, can be
distributed to the outside rear
wheel, and a rotational pulse (yaw
movement) is generated around
the vehicle’s vertical axis. This
assists the steering input and
results in a more assured steering
manoeuvre.
At low and medium vehicle
speeds, the system significantly
increases agilit y and steering
precision, whilst at high speeds,
and in combination with the
mechanical limited-slip differential,
it additionally ensures greater
driving stabilit y. The system, combined with

Porsche Traction Management
(PTM) and Porsche Stabilit y
Management (PSM), also puts

its stabilising ef fect to good use
on road surfaces with varying
levels of grip and on snow and ice.
As PT V increases the car’s
dynamic performance, the system
remains active when driving
on the racetrack, even if PSM
has been deactivated.
Where
efficien cy is concerned,
this
enhanced performance and
stabilit y are achieved without the
need for any additional compo -
nents, apart from the mechanical
limited-slip rear differential. In
other words, a more enjoyable
drive with no additional weight.
Performance | Transmission
· 50 ·· 51 ·

The independent front suspension
combines McPherson-type struts
with longitudinal and transverse
links. Each front wheel is pre-
cisely located, ensuring excellent
handling and directional stabilit y. Proven in motorsport, the rear
axle assembly features multi-link
LSA (Light weight, Stable, Agile)
subframe-based suspension. Its
light weight construction of fers
excellent dynamic properties. The
axle kinematics improves stabilit y
under acceleration by reducing excessive compression. The light
-
weight strut has an aluminium
damper instead of conventional
steel to help improve handling
and agility.
The resulting suspension enables
smooth high -speed manoeuvres
in all road and track scenarios.
Pitch and roll are reduced to a
minimum, as are t yre noise and
vibration. The car offers excep -
tionally high levels of stabilit y.

Porsche Active Suspension
Management (PASM).
Included as standard equipment,
Porsche Active Suspension
Management (PASM) is an elec -
tronic active damping system.
It of fers continuous adjustment of
the damping force on each wheel,
based on current road conditions
and driving st yle.
At the press of a but ton, the
driver can choose bet ween t wo modes. While ‘Normal’ mode

provides a blend of performance
and comfort, the ‘Sport ’ setup
mode has a much firmer range of
set tings. The system responds
to changing road conditions and/
or driving st yle by continuously
varying the individual damping
forces within the parameters
defined for the selected setup
mode (‘Normal’ or ‘Sport ’).

Pitch and roll are reduced, whilst
contact of each wheel with the
road is optimised.
What’s the advantage of being well-balanced?
Not letting the smallest thing bother you.
Chassis.
Perhaps the most efficient
way of overcoming everyday
obstacles is to rely on one’s
own experience. No one
knows that better than our
own chassis engineers.
Front axle (911 Turbo) Rear axle (911 Turbo)
Performance | Chassis
· 52 ·· 53 ·

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 ·

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 ·

Porsche Ceramic Composite
Brake (PCCB).
The new 911 Turbo S models are
equipped as standard with a
braking system that has already
proved it can withstand even
the toughest racing conditions,
such as those encountered in
the Porsche Mobil 1 Supercup.
That system is the Porsche
Ceramic Composite Brake
(PCCB). PCCB is available as an
option for 911 Turbo models. The ceramic discs have a dia
-
meter of 380 mm at the front and
350 mm at the rear. The discs
are made from a specially treated
carbon -fibre compound that is
silicated in a high -vacuum process
at 1,700 °C. The resulting mate -
rial
is not only much harder than
metal, it is also more resistant to
heat.
Even at high temperatures,
the thermal resistance of the

PCCB disc ensures excellent
dimensional stabilit y. The ceramic
material is totally resistant to
corrosion and offers excellent
acoustic damping properties.
The pads are mounted in six-
piston monobloc aluminium fixed
calipers at the front, with four-
piston units at the rear. The
resulting brake forces are both
extremely high and remarkably
consistent. The pedal response is
fast and precise with only moder -
ate input required.
PCCB enables shorter braking
distances in even the toughest
road and race conditions. Excel -
lent fade resistance ensures
greater balance when slowing
from racetrack speeds.
The key advantage of PCCB is
the total weight saving of approximately 50
% over metal
discs with similar construction
and dimensions. As well as
enhancing performance and fuel
economy, this represents a major
reduction in both the unsprung
and rotating masses. This,
of course, produces additional

benefits in terms of comfort
and road-holding on uneven
road surfaces as well as general
handling and agilit y.
Please note that circuit racing,
trackday use and other forms of
performance driving can signi -
ficantly reduce the service life of
even the most durable pads and discs. As with conventional high-
performance braking systems,

we recommend that all brake
components be professionally
inspected and replaced where
necessary after every track event.
PCCB
Responsibility | Safet y
· 68 ·· 69 ·

In an era of intensif ying debate
about CO
2 emissions, every auto-
motive manufacturer is being
asked the question, ‘What is your
answer to the issue of fuel
consumption?’ Our answer has
long been the same: maximum
efficiency. Porsche has been reducing the
CO2 emissions of its vehicles by
an average of around 1.7 %* every
year for the past 15 years. In
relation to engine power, Porsche
is already among those manufac -
turers achieving the lowest CO
2
emissions. This has been achieved through ef ficient drive concepts
(e.g. DFI), light weight construc
-
tion, optimised aerodynamics and
low rolling resistance.
This high level of environmental
responsibilit y is demonstrated by
our approach to environmental
management at the Porsche devel -
opment centre in Weissach. Here,
all technological developments
are carried out with environmental
protection in mind. The objective is to achieve pure performance,
but not at the expense of the

environment.
You will find more information
in our separate brochure
‘Porsche and the Environment ’
or at w w w.porsche.com.
Exhaust emission control.
The 911 Turbo and the 911 Turbo S
models comply with stringent
emissions standards, including
Euro 5 in Europe and LEV II/ LEV
in the USA. Porsche vehicles
demonstrate that even high-
performance sportscars can
achieve moderate emission
values in their respective cate -
gory. This makes them not just
extremely exciting sportscars,
but very clean ones too.
What’s urgently expected of today’s management teams?
Responsibility.
Environment.
Think twice about every
additional ounce. Get more
power out of every drop of
fuel. Examine every path to a
solution. Why? Well, because
it’s our duty. And because
our efforts to achieve greater
efficiency will also give us
the engineering lead.
Responsibility | Environment
* The stated reduction in fuel consumption
has been calculated from the NEDC (New
European Drive Cycle) fuel consumption
figures for the respective model years of the
vehicles and in relation to the applicable
European legislation.
· 74 ·· 75 ·

Fuel consumption and recycling.
Intelligent light weight construction
is a fundamental aspect of design
at Porsche. For both economic
and ecological reasons. This forms
the basis for achieving low fuel
consumption values combined
with outstanding performance.
It is economical thanks to the
high proportion of cast aluminium
alloys, magnesium, plastics and
high-strength sheet steel, the
lat ter being much stronger and
lighter than conventional steel.
The 911 Turbo and 911 Turbo S
models consist of almost 20 %
lightweight alloys.
It is also ecological because all
materials used are carefully
selected. Only the latest, environ -
mentally sound components are
used. All light weight materials are
easily recyclable, while the variet y
of synthetic components has been
reduced. Recycled plastics are
used in all areas of the car where
they meet our exacting technical
requirements. To simplify process -ing, all materials are labelled for
separate recycling.
In short, approximately 95
% of
today’s 911 Turbo and 911 Turbo S
models can be recycled.
Porsche primarily uses environmen -
tally friendly water-based paints.
All areas of the 911 Turbo and
911 Turbo S models are free from
asbestos, CFCs and components
manufactured using CFCs. Because
at Porsche, helping the environ -
ment doesn’t start at the end of a
vehicle’s life. It starts right at
the beginning at the planning and
development stages.Fuel.
The current 911 Turbo generation is
already compatible with fuels that
have an ethanol content of up to
10 %. A ‘biofuel’ made from naturally
replenishing materials, ethanol has
a positive impact on the carbon
dioxide balance since the plants
grown for its production also
absorb carbon dioxide from the
atmosphere. Hydrocarbon emissions from the
fuel supply system are low,
achieved through a combination of
an active carbon filter and a
special fuel-tank coating. All fuel
lines are made from aluminium,
whilst those carrying vapours are
made from multi-layer plastic.
Noise.
The 911 Turbo and 911 Turbo S
models comply with all current
noise regulations – without resort
-
ing to engine encapsulation.
To achieve this, we’ve eliminated
noise at source: engine compo -nents are more rigid, moving
parts lighter and tolerances
reduced to a minimum. High-

efficiency silencers and resona -
tors in the intake system help
to reduce noise even further. For
the entire service life of the car.
Responsibility | Environment
· 76 ·· 77 ·

HomeLink®.
The optional freely programmable
garage door opener is incorpo-
rated into the roof console and
of fers remote control of up to
three garage door, gate, home
lighting and/or alarm systems.
Luggage compartment.
In addition to the rear luggage
area, the luggage compartment
at the front has a capacit y of
105 litres. The entire luggage compartment is lined with high-
qualit y scratch - resistant materials.
Roof transport system.
The optional roof carrier system
for the 911 Turbo (Coupé versions
only) is aerodynamically efficient,
extremely light weight and easy
to fit. The system can be com -
bined with a range of at tachments,
such as a roof box and carriers
for bikes, skis and snowboards.
Maximum roof load is 75 kg.
Anti-theft protection.
An engine immobiliser with in -key
transponder as well as a powerful
alarm system featuring contact-
sensitive exterior protection and
radar-based interior surveillance
are standard on all models.
Vehicle Tracking System.
An optional factory-fit ted prepa -
ration enabling future installation
of a vehicle tracking system is ob -
tainable from Porsche Tequipment.
This system allows a stolen
vehicle
to be traced throughout most of
Europe. The package includes
a special wiring loom and a high
capacit y bat tery. A tilt sensor
for the alarm system is
also part
of the preliminary fit tings.
Automatically dimming mirrors.
An auto -dimming function is
included as standard for the
interior and exterior mirrors. Also
included is an integrated rain
sensor for the front wiper system.
ParkAssist.
This standard feature is
automatically enabled whenever
you select reverse gear. Move
too close to a stationary object
and a warning signal is emit ted.
Continue to reverse and the
tone increases in frequency. The ultrasonic sensors are neatly
concealed in the rear bumper.
Cruise control.
Standard on 911 Turbo S models
(optional for 911 Turbo models),
cruise control has an ef fective
speed range of 30 –240 km/ h
(19–149 mph). The system is
operated using a separate control
stalk on the steering column and
can even be used in first gear.
Luggage compartment with t wo PTS ‘Ultralight edition’ trolley cases, size M
Roof transport system
Personality | Comfort
· 84 ·· 85 ·