2013 PORSCHE BOXSTER S Information Manual

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and more comfortable than the standard
chassis. The PASM control unit evaluates
the driving conditions and modifies the

damping force on each of the wheels in
accordance with the selected mode.
Sensors record the body movements that
accompany powerful acceleration, brak
-
ing or uneven road surfaces. This enables
intelligent adaptation of damper stif fness
for the selected mode, optimising contact
bet ween each individual t yre and the road
and reducing pitch.
Porsche Active Suspension
Management (PASM).
Optional PASM, the electronic damping
control system, suits the Boxster models
down to the ground. PASM
actively and
continuously regulates the damping force
for each wheel according to the
road con-
ditions and driving st yle. In addition, the
suspension is lowered by 10 mm.
The driver can select bet ween t wo
dif ferent modes: ‘Normal’ which is a
blend of performance and comfort,
and ‘Sport ’ where the setup is much
firmer. Depending on the mode selected,
therefore, PASM can be both sportier

of the previous model. The independent
suspension features lightweight spring-strut
axles with longitudinal and transverse
links and, at the front, cross members
that have been refined for optimum control.
As a result, each wheel moves precisely
to ensure excellent directional stability
and superior handling in all situations.
What does this mean for the driver? The
sophisticated engineering of the chassis,
combined with the mid-engined layout,
achieves impressive dynamic performance.
Body roll and pitch have been practically
eliminated to offer a level of agilit y that
turns each corner into an incomparable
experience.

Even when you want to make a break
from everyday life, you should still keep
your feet on the ground.
The chassis of the Boxster models are an
excellent match for the powerful engines.
Axle components are made predominantly
of aluminium. This lightweight material
helps to keep the weight of the vehicle and
its unsprung masses low, which reduces
fuel consumption, improves comfort and
increases agilit y.
The wide track is a prominent feature
and to provide additional stability and
enhanced comfort, the wheelbase has been
extended by 60 mm compared with
that
A love of freedom is no reason
to lose self-control.
Chassis.

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1 Front axle of the Boxster S
2 Rear axle of the Boxster SIt features a variable steering ratio and
responds precisely and directly as well as
providing customary agility, a high level of
comfort and plent y of direct feedback from
the road. Power steering Plus, the optional
speed -sensitive power-steering system, mini -
mises steering ef fort during manoeuvring
and parking.
eliminates the need for servicing, both of
which also have benefits for the environ-
ment.
The Boxster concept was designed to
offer outstanding cornering performance.
The steering system delivers and it even
improves the typical Porsche steering feel.
mechanical steering system. Whereas
a conventional hydraulically assisted
steering system draws engine
power con-
tinuously, the electric motor
in the electro-
mechanical arrangement uses energy
only when the steering
wheel is actually
turned. As a result, fuel consumption is
reduced and the absence of hydraulic fluid
Steering.
One definition of efficiency is a system
that works only when it is needed, and then
does so in a particularly effective way.
This was the guiding principle for our
engineers in the development of the electro-
The results are tangible: increased driving
stability, enhanced driving pleasure and
improved performance. PASM automatically reverts to the
original, harder rating. If ‘Normal’ mode is
selected and the driver’s st yle becomes
more assertive, PASM switches to a
harder rating to increase driving stability
and road safet y.
In ‘Sport ’ mode, the suspension is set
to a harder damper rating. On uneven
roads, PASM immediately switches
to a softer rating, thereby improving
contact bet ween the t yres and the
road. When the road surface improves,

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1 18 - inch Boxster wheel
2 19 - inch Boxster S wheelThe system updates quickly and accurate-
ly after an engine start, t yre pressure cor -
rection or wheel change – for increased
comfort and safet y.
Tyre Pressure Monitoring (TPM).
Optional Tyre Pressure Monitoring (TPM)
sends warnings to the on-board comput -
er’s display screen in the event of low t yre
pressure. The 4.6-inch TFT screen in the
instrument cluster enables the driver to
check the pressure in all four t yres.
time the t yres have a low rolling resistance,
which, in turn, helps to reduce fuel con
-
sumption.
Wheels up to 20 inches are available as an
option.
The Boxster S has 19-inch wheels with
a dynamic dual-spoke design. The t yre
size at the front is 235/40 ZR 19 and
265/40 ZR 19 at the rear.
The larger rolling circumference improves
comfort and performance. At the same

The Boxster is equipped with 18-inch
wheels. Their minimalist five-spoke design
is sport y and elegant in equal measure.
Tyre sizes are 235/45 ZR 18 and 265/45
ZR 18 at the front and rear, respectively. Wheels.
The standard wheels on the Boxster mod-
els have been enlarged by one inch com-
pared with those of the previous models.
Made from a light weight alloy, the larger
wheels reinforce the car’s imposing pres
-
ence and further improve sport y perfor-
mance.

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PCCB enables shorter braking distances
in even the toughest road and race
conditions. Excellent fade resistance
ensures greater balance when slowing
from racetrack speeds.
1 Standard brake on the Boxster
2 Standard brake on the Boxster S
3 Porsche Ceramic Composite Brake (PCCB)
road. The optional Porsche Ceramic
Composite Brake (PCCB) is a fine exam-
ple. This brake system has already had
to cope with the harshest requirements
of motor racing and is fit ted in cars
that compete in demanding events such
as the Porsche Mobil 1 Supercup.
The cross- drilled PCCB ceramic brake

discs for the Boxster have a diameter of
350 mm front and rear for even more
formidable braking performance.
The use of six-piston aluminium mono -
bloc fixed brake calipers on the front axle
and four-piston units at the rear – all
finished in yellow – ensures extremely
high brake forces which, crucially, are
exceptionally consistent.
The dynamics of the Boxster and
Boxster S also demand appropriate brake
discs. All Boxster brake discs are intern -
ally vented and cross-drilled for improved
braking in wet conditions. With a diame -
ter of 330 mm, the front brake discs of
the Boxster S are 15 mm larger than
those of the Boxster. The diameter of
the rear brake discs is 299 mm on both
models. The brake calipers on the
Boxster and Boxster S are black and red,
respectively.

Porsche Ceramic Composite Brake
(PCCB).
From the start, Porsche has been syn -
onymous with motorsport. Ever since
1948, when we found our identit y on the
racetrack, we have taken the experience
we have gained and applied it to the

Brakes.
Porsche brakes set standards worldwide
for stopping power and stability. For the
Boxster models, braking per formance is
as essential as driving performance.
Both models are equipped with four-
piston aluminium monobloc fixed calipers
at the front and rear. This design means
that, not only are the brakes extremely
resistant to deformation, they are light -
weight for a particularly fast and sensitive
braking response.
Large brake calipers help to provide
excellent braking and component stability
even during continuous use. These t wo
characteristics have also been optimised
by the brake ventilation system with air
spoiler at the front and rear axles.

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pedal). The wheel brakes are released as
soon as sufficient starting torque is
available and the parking brake is
released as the vehicle moves off.
supplemented by application of the

wheel brakes. As long as a gear remains
engaged, the brake pressure is main -
tained at all four wheels. To pull away,
simply apply throttle (manual gearbox:
apply throt tle and release the clutch manual gearbox and for PDK. It assists
you in making a comfortable, smooth and
roll-free start on an incline. Whenever you
come to halt on an incline, this is detected
automatically and the braking effect
of the electric parking brake is
Electric parking brake.
The electric parking brake, which can
be activated and deactivated manually,
is released automatically as you pull away
with your seat belt fastened. A hill hold
function is integrated as standard for the
we recommend that all brake compo
-
nents be professionally inspected and
replaced where necessary after every
track event.
Please note that circuit racing, trackday
use and other forms of performance

driving can significantly reduce the
service life of even the most durable
pads and discs. As with conventional
high-performance braking systems,
represents a major reduction in unsprung and rotating masses. The consequence of
this is bet ter road holding and increased
comfort, particularly on uneven roads,
as
well as greater agilit y and improved
handling.
Another key advantage of PCCB is the
extremely low weight of the ceramic
brake discs, which are approximately
50
% lighter than standard discs of similar
design and size. As well as enhancing
performance and fuel economy, this

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Porsche Stability Management (PSM).

Porsche Stabilit y Management (PSM) is fit-
ted as standard. This system automatically
maintains stability even at the limits of
dynamic driving performance. Sensors
continuously monitor the speed, yaw
velocit y and lateral acceleration of the
Fo r w ar d t h r u s t |
Chassis
therefore achieved much sooner. Brake
assist detects a panic braking situation
and generates the brake pressure
required for maximum deceleration.
precharging of the brake system and
brake assist. If you suddenly release the
accelerator pedal, PSM automatically
prepares for your next action: the braking
system is precharged so that the brake
pads are already in light contact with the
brake discs. Maximum braking power is

If you prefer an ever sportier drive, PSM
can be switched off. For your safet y,

however, PSM remains set to intervene if
the vehicle is braked and ABS assistance

is required. ABS and ABD remain switched
on at all times. Also included with PSM
are engine drag torque control (EDC),
Under acceleration on wet or low-grip
road surfaces, PSM improves traction –
as well as agilit y and safet y – using the
automatic brake differential (ABD) and
antislip regulation (ASR). Integrated ABS is
designed to minimise braking distances. car. Using this information, PSM is able
to calculate the actual direction of travel
at any given moment. If the car begins
to oversteer or understeer, PSM applies
selective braking on individual wheels in
order to restore stability.

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with precise steering and stable load
transfer characteristics. What else? As
ever, lots of excitement at every t wist
and turn.
on a range of surface conditions, includ
-
ing the wet and snow.
The results are remarkable stability,
easier handling and outstanding traction
as well as greater agilit y at every speed
At low and medium vehicle speeds, PT V
significantly increases agilit y and steering
precision. At high speeds and when

a
ccelerating out of corners, the rear differ-
ential lock ensures greater driving stabilit y
(yaw movement) around the vehicle’s
vertical axis. This results in a direct and
sport y steering action as the car enters
the corner.
When the car is driven assertively into

a corner, moderate brake pressure is
applied to the inside rear wheel. Conse -
quently, a greater amount of drive force
is distributed to the outside rear wheel,
inducing an additional rotational pulse Porsche Torque Vectoring (PTV).
This optional system for increasing
dynamic performance and stability varies
the distribution of torque to the rear
wheels and includes a mechanically lock -
ing rear differential.