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Porsche Ceramic Composite
Brake (PCCB).
On request, we can equip your
Boxster S with a brake system
that has already had to cope
with the harshest requirements
of motorsport: the Porsche
Ceramic Composite Brake (PCCB).
The ceramic brake discs have
a diameter of 350 mm front and
rear – for extremely powerful
braking. The brake discs are
formed from a specially treated
carbon -fibre compound that is
silicated in a high-vacuum process
at approximately 1,700 ˚C. Not
only are the resulting discs much
harder than standard discs, they are more resistant to heat.
The low thermal expansion of
the brake discs prevents defor -
mation under heav y braking.
Furthermore, the ceramic brake
discs are totally resistant to
corrosion and offer more favour -
able noise-damping properties.
Six-piston aluminium monobloc
fixed calipers on the front axle
and four-piston units at the rear
provide a high and constant
brake pressure. The pedal
response is fast and precise with
only moderate input required.
All the necessary ingredients
are there for a short braking
distance, even in the toughest
conditions. Moreover, safet y
under braking at high speeds is
increased thanks to the excel-
lent fade resistance of PCCB.
The key advantage of PCCB
is that the brake discs are
approximately 50 % lighter than
standard discs of similar design
and size. A factor that helps
to reduce unsprung and rotating
masses on the vehicle. 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.
Please note that circuit racing,
trackday use and other forms of
performance driving can signifi -
cantly reduce the service life of
even the most durable brake
pads and discs. We recommend
that all brake components be
professionally inspected and
replaced where necessary after
every track event.
Porsche Stability Management
(PSM).
PSM, which comes as standard,
is an automatic control system
that stabilises the vehicle at the
limits of dynamic driving per-
formance. Sensors continuously
monitor driving direction, speed,
yaw velocit y and lateral accel -
eration. Using this information,
PSM computes the actual direc -
tion of motion. If this direction
deviates from the desired course,
PSM initiates braking inter-
ventions targeted at individual
wheels in order to stabilise the
vehicle.
Under acceleration on wet or
low-grip road surfaces, PSM
improves traction using the ABD
(automatic brake differential)
and ASR (anti-slip regulation)
functions, giving an agile
response. When ‘Sport ’ mode is
selected on the optional Sport
Chrono Packages (p. 56), the
PSM intervention threshold is
raised to enable greater driver
involvement – particularly at
speeds of up to approximately
70 km/ h (45 mph). The integral
ABS can further reduce the
braking distance.
Boxster S Boxster SBoxster S
Boxster | Safet y
· 64 ·· 65 ·
Boxster | Safet y
Dynamic cornering light Night-time illumination (front)Night-time illumination (rear)
For an even sportier drive, PSM
can be deactivated. However,
it is automatically reactivated for
your safet y if either of the front
wheels (in ‘Sport ’ mode, both of
the front wheels) requires ABS
assistance. ABD remains perma -
nently active.
PSM includes t wo additional func -
tions: precharging of the brake
system, and brake assist. If you
suddenly release the accelerator
pedal, PSM automatically readies
the braking system. With the
braking system having been
precharged, the brake pads are
already in light contact with the
brake discs. Maximum braking
power is therefore achieved
much sooner. When sudden brak -
ing is detected, the brake assist
function applies maximum brake
pressure to all four wheels.
Lights.
The Boxster models are all fit ted
with halogen headlights with
LED position lights integrated
separately into the front light unit
with integral fog lights above the
outer air intakes.
LED technology is also used in
the taillight unit to provide bet ter
illumination and respond more
quickly to driver input. Further
benefits are that LED bulbs are
energy saving and have a longer
life than conventional bulbs.
The design is unmistakable, both
day and night.
Bi-Xenon headlights with
dynamic cornering lights and
LED daytime running lights.
Available as an option for both
Boxster models are Bi-Xenon
headlights which include dynamic
cornering lights and LED day time
running lights.
Bi-Xenon headlights are brighter
than halogen headlights so that
they of fer improved visibilit y and
they illuminate the road more evenly. In fact, they are so effec
-
tive that separate fog lights are
no longer necessary. A headlight
cleaning system is built-in.
Dynamic cornering lights of fer
particularly effective illumination
of the road ahead, especially
through bends. Sensors continu -
ously monitor the speed, lateral
acceleration and steering lock
and, from these variables, calcu -
late the course of the bend.
This determines the angle
of the dynamic cornering lights,
with the lights able to swivel
into the corners up to a limit of
15 degrees, even with main
beam switched on.
