2015 PORSCHE 911 CARRERA 4S Information Manual

Chassis 57
Porsche Stability Management (PSM).
All 911 models are equipped with
enhanced Porsche Stability Management
(PSM) as standard. PSM maintains
stabilit y even at the limits of dynamic
driving performance. Sensors
continuously monitor the direction,
speed, yaw velocit y and lateral
acceleration of the car. Using this
information, PSM is able to calculate the
actual direction of travel at any given
moment and initiates strategic braking of
individual wheels to prevent you from
deviating from your intended line.
Under acceleration on inconsistent
surfaces, PSM improves traction using
the automatic brake differential (ABD) and anti-slip regulation (ASR) functions.
The result is a high level of driving
stability and safety – and extraordinary
agilit y at the same time.

12
For fuel consumption and CO2 emissions, please refer to page 147 onwards.
Wheels.
T h e 911 Carrera models and the
911
Targa 4 are equipped with 19-inch
wheels. These are lightweight alloys
featuring a classic sport y design. All S models are equipped with 20 -inch
alloy wheels. The visual effect is sport y
and dynamic. The t yres are wider to
cope with the increased power output of
these models.
The large wheel size improves traction
and track performance. Rolling resistance

and t yre weight are comparatively low,
which helps to reduce fuel consumption. A selection of 20 -inch wheels is available
in our range of options.
1 19 - inch Carrera wheel
2 20 - inch Carrera S wheel
3 20 - inch Carrera Classic wheel
4 20 - inch RS Spyder Design wheel
5 20 - inch Carrera Spor t wheel

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Chassis 59
Electromechanical power steering.
Statistically, a car drives in a straight line
90 % of the time. In light of this, our
engineers identified potential for energy
savings. Unlike the hydraulic pumps of
conventional power steering systems, the
electric motor of the electromechanical
arrangement uses energy only when the
steering wheel is actually turned.
That isn’t to say that you aren’t ideally
prepared for the other 10 %. After all,
this steering system is t ypically Porsche.
It features a variable steering ratio and responds sensitively and directly while
providing customary agilit y, a high level
of comfort and precisely selected
feedback from the road. Our definition

of efficient.

23 1

Chassis 61
Power steering Plus.
The comfort- oriented Power steering Plus
is available as an option. At low speeds,
it adjusts for much easier manoeuvring
and parking.
Rear-axle steering.
Rear-axle steering is available on request
for all S models. Until now reserved
exclusively for the 911 Turbo and 911 GT3
models, it enhances performance and
everyday practicalit y in equal measure.
For particularly nimble handling combined
with a significant increase in driving
stability.
The advantage for day-to - day driving:
during low-speed manoeuvres, the
system steers the rear wheels in the
opposite direction to that of the front
wheels. This has the virtual effect of shortening the wheelbase. The turning
circle is reduced, cornering turn-in
becomes considerably more dynamic,
and parking is noticeably easier to
manage.
The advantage for sport y driving: during
high-speed manoeuvres, the system
steers the rear wheels in the same
direction as that of the front wheels.
Driving stability is increased by the
virtual extension of the wheelbase and
agility is enhanced by the simultaneous
steering of the front and rear axles. All
this has an impact on maximum driving
performance: an extremely positive one.
Front-axle lift system.
Particularly practical: the lift system,
available as an option for all 911
models,
raises the front end by approximately 40 mm – and keeps it there up to a
speed of roughly 21 mph. With this new
system, kerbs, ramps and car park
entrances are a sporting challenge of the
past.
Porsche Dynamic Chassis Control
(PDCC).
PDCC – optional for all S models in
conjunction with rear-axle steering –
is an active anti-roll system that
suppresses lateral body movement
during cornering manoeuvres. In
addition, it minimises the lateral
instability of the vehicle on uneven
ground.
The results are improved dynamic
performance, even more neutral handling
and increased ride comfort – whatever
the speed. In simple terms, the t yres and vehicle
hold the road bet ter and you can steer
through corners faster and in a more
relaxed manner. Which is why PDCC sets
standards for driving performance, ride
comfort – and driving pleasure.
Want to overcome your obstacles?
Scan code or go to w w w.porsche.co.uk/front-axle- lif t-system and star t the video.
1 Porsche Dynamic Chassis Control (PDCC)
2 Rear-axle steering
3 Front-axle lift system

Chassis 63
SPORT button.
The SPORT button enables you to select
a suspension setup where the emphasis
is on either comfort or sport y performance.
At the push of a button, the electronic
engine management system switches the
engine mapping to offer an even sharper
response and engine dynamics that are
more direct.
In vehicles with Porsche Doppelkupplung
(PDK), upshifts take place at higher engine
speeds and downshifts happen sooner.
In addition, coasting mode and the auto
start/stop function are automatically
deactivated. If fitted, the optional sports
exhaust system is also activated
automatically.
Sport Chrono Package.
Adrenaline at the push of a but ton, goose
bumps included: the functions of the
optional Sport Chrono Package enable
an even sportier tuning of the chassis,
engine and transmission – and launch
you to unprecedented sporty heights.
What ’s new is the mode switch on the
steering wheel, derived from the
918 Spyder to make you feel closer to
the racetrack. Without your hand leaving
the steering wheel, you can choose any
of four set tings: Normal, SPORT, SPORT
PLUS and Individual. Now you can adapt
the vehicle even more to the way you
want to drive. On activation of SPORT PLUS mode,
Porsche Active Suspension Management
(PASM) and, in the S models, optional
Porsche Dynamic Chassis Control (PDCC)
and optional rear-axle steering adapt for
enhanced roadholding performance by
switching to a sportier damper set ting
and offering more direct turn-in on
entering the corner.
In combination with PDK, the Sport
Chrono Package has three additional
functions. The first is ‘Launch Control’,
which can be used to achieve the best
possible standing start – a racing start.
The second function is the motorsport-
derived gearshift strategy. In this mode,
Another few seconds faster.
Under the skin.
High-performance systems.
PDK is geared up for extremely short
shift times and optimum shift points for
the maximum acceleration available.
This combination of uncompromising and
involving performance is ideal for the
racetrack.
The third function – SPORT Response –
is brand new to the 911. Pressing the
but ton in the centre of the mode switch
primes the engine and transmission for the
fastest possible unleashing of power. In
other words, maximum responsiveness –
for a period of approximately 20 seconds.
A timer graphic in the instrument cluster
tells you how long is left.

Engage SPORT.
Scan code or go to w w w.porsche.co.uk/spor t- chrono - package and star t the video.

Another component of the Sport Chrono
Package is the stopwatch mounted on
the dashboard. In conjunction with PCM,
a special performance display enables
you to view, store and evaluate lap times
or other driving times. It shows the total
driving time, lap distance, lap number
and lap times recorded so far. Dynamic engine mounts are also part

of the Sport Chrono Package. The
electronically controlled system
minimises the perceptible oscillations
and vibrations of the entire drivetrain,
particularly the engine, and combines
the benefits of a hard or soft engine mounting arrangement. In short, it
enhances both driving stability and
driving comfort. PSM Sport.
In conjunction with the optional Sport
Chrono Package, PSM is supplemented
by a ‘Sport ’ mode. It allows a significantly
more sporty driving style, with PSM
remaining active in the background. For
a further enhancement to your driving
experience.