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on the new Boxster S are 4 mm
The ceramic brake discs have
thicker than those on the Boxster,
a diameter of 350 mm front and
which increases stability even
rear – for extremely powerful
further. To distinguish them visually,
braking. The brake discs are
the brake calipers on the Boxster
formed from a specially treated
have a black anodised finish while
carbon-fibre compound that is
those on the Boxster S are painted
silicated in a high-vacuum process
red.
at approximately 1,700˚C. Not
only are the resulting discs much
harder than standard discs,
Porsche Ceramic Composite
they are more resistant to heat.
Brake (PCCB).
The low thermal expansion of the
brake discs prevents deformation
On request, we can equip your
under heavy braking. Furthermore,
Boxster S with a brake system
the ceramic brake discs are totally
that has already had to cope with
resistant to corrosion and offer
the harshest requirements of
more favourable noise-damping
motorsport: the Porsche Ceramic
properties.
Composite Brake (PCCB).
Boxster S
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, safety under braking at
high speeds is increased thanks
to the excellent fade resistance of
PCCB.
The key advantage of PCCB is that
the brake discs are approximately
50 % lighter than standard discs
· 62 ·
Boxster S
of similar design and size. A factor
Porsche Stability Management
(PSM).
that helps to reduce unsprung and
rotating masses on the vehicle.
The consequence of this is better
PSM, which comes as standard, is
road holding and increased
an automatic control system that
comfort, particularly on uneven
stabilises the vehicle at the limits
roads, as well as greater agility
of dynamic driving performance.
and improved handling.
Sensors continuously monitor
driving direction, speed, yaw
Please note that circuit racing,
velocity and lateral acceleration.
trackday use and other forms
Using this information, PSM
of performance driving can signifi-
computes the actual direction of
cantly reduce the service life of
motion. If this direction deviates
even the most durable brake pads
from the desired course, PSM
and discs. We recommend that
initiates braking interventions
all brake components be profes-
targeted at individual wheels in
sionally inspected and replaced
order to stabilise the vehicle.
where necessary after every track
event.
Boxster |
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. 62),
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.
For an even sportier drive, PSM
can be deactivated. However, it is
· 63 ·
Safety
Boxster S
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