4647
Fo r w ar d t h r u s t |
Transmission
accelerator or brake pedal, PDK re-en -
gages the appropriate gear within frac -
tions of a second. The process is smooth
and seamless thanks to the extremely
fast clutch.
Another way to reduce fuel consumption
is to utilise the coasting function on
downhill gradients that are gentle enough
for you to maintain a constant speed.
Efficient on long journeys, such as on the
motorway, PDK remains ready to respond
as swiftly and precisely as you would
expect.
In short, driving in coasting mode makes
a real impact on fuel consumption with -
out any need for compromise on comfort
or sporty performance.Coasting.
The coasting function available with
Porsche Doppelkupplung (PDK) enables
you to save even more fuel where the
situation allows. The engine is decoupled
from the transmission to prevent
deceleration caused by engine braking.
In this way, optimum use is made of
the vehicle’s momentum, allowing it to
coast for longer distances.
For example, you may want to slow
down 100 km/ h to 80 km/ h in anticipa -
tion of the change of speed limit ahead.
As you ease off the accelerator pedal,
PDK deselects the current gear automa -
tically and you begin
to coast in neutral
until you have reached
your desired
speed. As soon as you
operate the
For fuel consumption, CO2 emissions and efficiency class please refer to page 131.
a more immediate response to throt tle
inputs, even shorter shift times and swift,
throttle-blip downshifts on overrun and
when braking – always accompanied by
an emotive engine sound.
With the optional Sport Chrono Package,
PDK is enhanced by the ‘Launch Control’
and ‘motorsport- derived gearshif t strat-
egy’ functions (p. 65) for even faster and
firmer gear changes and the best possible
performance thanks to a boost in torque
during upshift phases. Overrun downshifts
provide extremely sport y braking and
acceleration for added excitement.
5051
Fo r w ar d t h r u s t |
Chassis
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.
2 1
52
53
Fo r w ar d t h r u s t |
Chassis
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,
2 1
5455
Fo r w ar d t h r u s t |
Chassis
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.
3
2
1
56
57
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.
62
63
Fo r w ar d t h r u s t |
Chassis
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.
3 2 1
6465
1 Sport Chrono display on sports steering wheel
in conjunction with PDK
2 Sport Chrono stopwatch
3 SPORT and SPORT PLUS but tonswhile torque boosts during gear changes
provide the maximum acceleration availa -
ble. This involving experience is further
enhanced by overrun downshifts
and the
throttle-blip function for uncompromising
driving pleasure.
An additional display in the steering
wheel or either the instrument cluster
indicates the SPORT or SPORT PLUS
but tons and, with PDK, Launch Control
have been activated. In conjunction with
the optional Porsche Communication
Management (PCM), a special display ena -
bles you to view, store and evaluate lap
times or other driving times. It shows the
total driving time, lap distance, lap num -
ber and lap times recorded so far.
Performance is further intensified by
dynamic gearbox mounts. Read on to find
out more.
be set to standby while the car is still in
SPORT PLUS mode. For safet y, it is set
to intervene automatically only when ABS
assistance is required.
The throt tle-blip function produces even
sportier gearshifts. A managed burst of
throt tle ensures smooth load changes for
increased stabilit y and makes the gearshift
process an even more engaging experience.
In conjunction with optional PDK, the Sport
Chrono Package comes with t wo additional
functions for a sport y drive that borders
on a motorsport experience. The first
is ‘Launch Control’, which is designed to
produce a racing start.
The second function is the involving
‘motorsport- derived gearshif t strategy’.
Using this, Porsche Doppelkupplung (PDK)
is geared up for the shortest possible
shift times and optimum shift points,
Sport Chrono Package.
Time is precious and every hundredth
of a second counts. The optional Sport
Chrono Package makes your driving experi
-
ence priceless thanks to an even sportier
tuning of throt tle response and handling
characteristics.
The package comprises dynamic gear-
box mounts, a performance display, a
digital and analogue stopwatch and the
SPORT PLUS but ton. When this is pressed,
optional Porsche Active Suspension
Management (PASM) switches to ‘Sport ’
mode for harder damping and more
direct steering and therefore, even more
intensive road holding.
The trigger threshold for PSM is raised.
Agilit y is perceptibly enhanced when
braking for corners with PSM, allowing
even sportier braking and exit acceleration.
For even greater dexterit y, PSM can
1
6667
Fo r w ar d t h r u s t |
Chassis
1 Dynamic gearbox mountsIn conjunction with optional PCM, the
G -Force graphic on the TFT screen in
the right-hand circular instrument enables
you to view the lateral and longitudinal
forces as they act on the vehicle.
Using the SPORT or SPORT PLUS but ton
you can switch the dynamic gearbox
mounts from ‘Normal’ to ‘Sport ’ or
‘Per formance’ mode and intensif y your
driving pleasure. This results in greater traction, perceptibly
more stable handling under load change
conditions and in fast corners and, in
conjunction with the ‘Launch Control’
function for example, extremely fast
acceleration.
Dynamic gearbox mounts minimise this
effect. Steering angle and both longitudi
-
nal and lateral acceleration are constantly
recorded by sensors. The stiffness and
damping performance of the gearbox
mounts adapt to changes in driving st yle
and road surface conditions, which is
achieved by use of a fluid with magnetic
properties.
Put more simply: when you are driving
into a bend, the vehicle will follow your
steering but, at first, the mass of the
drivetrain will not. This means that the
rear of the vehicle will ultimately be
pushed out wards as a result of the drive -
train’s force of inertia.
of the entire drivetrain, especially the
engine.
The gearbox is bolted to the body by t wo
mounts. Like any mass, it obeys the law
of inertia. This means that it will continue
moving in a uniformly straight line unless
some force causes it to change direction. Dynamic gearbox mounts.
Dynamic gearbox mounts are included
as part of the optional Sport Chrono
Package. They are designed to enhance
both performance and comfort.
The electronically controlled system
minimises the oscillations and vibrations