PORSCHE 911 CARRERA 4S 2015 6.G Information Manual

Drive 51
The essential feature of all 911 all-wheel
drive models: enhanced Porsche Traction
Management (PTM).
Derived from the 911
 Turbo, the
electronically controlled and fully variable
multi-plate clutch distributes drive force
between the permanently driven rear
axle and the front axle even faster and
more precisely than ever before.
The driving state of the vehicle is
continuously monitored so that it is
possible to respond to different driving
situations. Sensors are used to collect a
range of data, including the rotational speed of all four wheels, the lateral and
longitudinal acceleration of the car and
the current steering angle.
If, for example, the rear wheels threaten
to spin under acceleration, a greater
proportion of drive force is transmit ted
to the front by a more powerful
engagement of the multi-plate clutch.
In this way, PTM, working in conjunction
with Porsche Stabilit y Management
(PSM), always ensures the appropriate
distribution of force necessary for
excellent driving performance and
particularly well-balanced handling at

the limit.
Drizzle, snow, leaves, sun.
Perfect weather for some sports action.
Porsche Traction Management (PTM).

Porsche Torque Vectoring (PTV) and
Porsche Torque Vectoring Plus (PTV Plus).
PTV (with manual transmission) or PTV Plus
(with PDK) is available as standard in
the S models and as an option for the
911 Carrera 4 models and the 911 Targa 4.
Both systems actively enhance vehicle
dynamics and stability. Operating in conjunction with a rear differential lock,
they work by intelligently braking the
rear wheels as the situation demands.

When the car is driven assertively
into a corner, moderate brake pressure
is applied to the inside rear wheel.
Consequently, a greater amount of drive force is distributed to the outside rear
wheel, inducing an additional rotational
pulse (yaw movement) around the
vehicle’s vertical axis. This results in
a direct and sport y steering action
from the turn-in point.
With PTV, the rear differential lock is
regulated mechanically, while PTV Plus is
equipped with electronic control offering
fully variable torque distribution. In
interaction with Porsche Stability
Management (PSM), the system improves

Drive 53
driving stability not least on road surfaces
with varying grip as well as in the wet
and snow.
For the driver, this means strong
resistance to destabilising side forces,
outstanding traction and great agility at every speed – with precise turn-in and
well-balanced load transfer characteristics.
What else? Tremendous fun in the corners.

Chassis

Porsche Active Suspension Management
(PASM).
PASM is fit ted as standard in all 911
models for the first time. This electronic
damping control system continuously
adjusts the damping force on each
wheel, based on current road conditions
and driving style. PASM has two modes, which can be
selected using a separate but ton on the centre console: ‘Normal’, which is a blend
of performance and comfort, and ‘Sport ’
where the setup is much firmer.
The results are tangible: increased
driving stability, improved comfort and
enhanced performance.
The road to the future has its ups and downs.
And its fair share of twists and turns.
Chassis.

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

345
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