2011 PORSCHE BOXSTER S engine

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Chassis
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, 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. The results are tangible: increased driving
stability, enhanced driving pleasure and
improved performance.
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 new
electromechanical steering system.
Whereas a conventional hydraulically
assisted steering system draws engine
power continuously, the electric motor
in the electromechanical arrangement
uses energy only when the steering

wheel is actually turned. As a result, fuel
consumption is reduced and the absence of hydraulic fluid eliminates the need for
servicing, both of which also have benefits
for the environment.
The Boxster concept was designed to of fer
outstanding cornering performance. The
new steering system delivers and it even
improves the typical Porsche steering feel. It 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
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mises steering ef fort during manoeuvring
and parking.
1 Front a xle of the Boxster S
2 Rear axle of the Boxster S

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Chassis
Wheels.
The standard wheels on the new Boxster
models have been enlarged by one inch
compared with those of the previous
models. Made from a light weight alloy, the
larger wheels reinforce the car’s imposing
presence and further improve sport y
performance. The new 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.
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 time, the rolling resistance of the new gen
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eration of t yres has been reduced which,
in turn, helps to reduce fuel consumption.
Wheels up to 20 inches are available as an
option.
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. The system updates quickly and accurately
after an engine start, t yre pressure cor
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rection or wheel change – for increased
comfort and safet y.
1 18 - inch Boxster wheel
2 19 - inch Boxster S wheel

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Porsche Stability Management (PSM).
Enhanced Porsche Stability Management
(PSM) is fit ted as standard. This system
automatically maintains stability even
at the limits of dynamic driving perfor -
mance. Sensors continuously monitor
the 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. If the car begins to oversteer or
understeer, PSM applies selective braking
on individual wheels in order to restore
stability. 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
anti-slip regulation (ASR). Integrated ABS
is designed to minimise braking distances.
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),
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 therefore achieved much sooner. Brake
assist detects a panic braking situation
and generates the brake pressure
required for maximum deceleration.
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Chassis

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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 of the entire drive train, 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. Put more simply: when you are driving
into a bend, the vehicle will follow your
steering but, at first, the mass of the
drive train 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.
Dynamic gearbox mounts minimise this
effect. Steering angle and both longitudi
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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. 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. 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. In 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.
1 Dynamic gearbox mounts

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Safety
On the road to independence, there is no
room for the slightest element of doubt.
The active and passive safet y concept
of the new Boxster models is designed
to ensure driving pleasure through peace
of mind.
Safet y is founded on a precisely engi -
neered chassis and high-performance
braking system. It also involves intelligent
control systems, such as Porsche Stability
Management (PSM), and depends on
an innovative body construction designed
to keep your roadster stable without
diminishing its agilit y. It is enhanced by an ingenious lighting concept featuring
powerful headlights, by assistance

systems that give you the information
you need and by an interior that provides
reliable protection in the event of an
accident.
Engineered body design.
The bodyshell of the new Boxster models
is based on an intelligent light weight
principle involving the composite con -
struction of aluminium and steel. The
use of dissimilar but precisely combined
components makes it possible to utilise
specific material properties exactly
It’s the same in the office as it is on the road:
performance needs a stable concept.
Safety.
where they are needed. Not only does
this provide a high level of safet y for
the driver, it offers a considerable weight
saving compared with the bodyshell of
the previous model. This is why the doors
of both luggage compartment lids are
made from lightweight aluminium.
The crumple zones in the front and
rear aprons feature integral light-alloy
bumpers, while impact absorbers offer
additional safet y. For the protection of
occupants, energy-absorbing padding is
used selectively in important areas within
the passenger cell.

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Safety
Roll-over protection.
Dual roll - over protection creates survival
space in the event of a roll-over or side
impact. The front roll-over protection
element is made from super and ultra
high -strength steels. The rear roll - over
bars located behind the seats are a composite construction of aluminium and
steel. They are fully trimmed to blend in
and provide an excellent level of safet y.
The upper seat belt guides are mounted
on the roll-over bars for easier fastening.
Airbags.
To protect the driver and passenger, the
new Boxster models are equipped with
full-size airbags, which are inflated in

t wo stages depending on the severit y
and t ype of accident (e.g. frontal or offset
frontal). In less serious accidents, the airbags are only partially inflated, thereby
minimising discomfort to the occupants.
In addition to the central airbag control
unit on the transmission tunnel, a pair of
impact sensors is located near the head
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lights. This allows a crash to be detected and evaluated far sooner and with

considerably greater accuracy.Porsche Side Impact Protection
System (POSIP).
Both new Boxster models are equipped
as standard with the Porsche Side Impact Protection System (POSIP). It comprises
t wo side airbags on each side. An integral
thorax airbag is located in the outer side
bolster of each seat, while the door panels
each contain an upwards-inflating head
airbag. Each thorax airbag has a volume of
10 litres and each head airbag 15 litres, ensuring excellent protection in the event
of a side impact even with the hood open.
POSIP additionally includes steel side
impact protection elements in the doors.
1 Engineered body design

2 Airbags and Porsche Side Impact Protection (POSIP)
Aluminium
Super high-strength steel
Multi-phase steel
Alloyed steel

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If we are to continue to enjoy driving
pleasure, we need to look after our
environment. In other words, we need to
take responsibilit y. In an era of intensify -
ing debate about global climate change
and CO
2 emissions, every automotive
manufacturer is asking itself what it
has to offer in terms of environmental
protection. Our answer has long been
the same: Intelligent Performance –
a combination of high power output and
high efficiency.
In recent years Porsche has managed to
reduce fuel consumption across all model
ranges by a double - digit percentage compared with the respective previous
model, even though performance has
been increased in every generation.

This is made possible by an efficient drive
concept (e.g. direct fuel injection (DFI) and
VarioCam Plus), lightweight construction,
optimised aerodynamics and low rolling
resistance.
The environmental management team
at the Porsche Development Centre in
Weissach aims to demonstrate a high
level of environmental responsibility. Here,
technological developments are carried
out with environmental protection in mind.
The goal is to enhance performance –
You can live for the moment
and still care about tomorrow.
Environment.
but, where possible, not at the expense
of the environment. We achieve this
goal with Intelligent Per formance, as
epitomised by the Boxster.
Exhaust emission control.
Vehicles manufactured by Porsche
demonstrate that even high-performance
sports cars can achieve moderate fuel
consumption and exhaust emission values
in their respective category.
This is achieved, on the one hand, through
the use of fuel - ef ficient technologies such
as auto start /stop, thermal management,
electrical system recuperation, direct fuel
For fuel consumption and CO
2 emissions please refer to page 127. injection, VarioCam Plus and, in conjunc
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tion with optional PDK, coasting mode.
On the other hand, newly developed
cataly tic converters provide ef ficient
emission control. While the stereo
Lambda control circuitr y controls and
monitors each cylinder bank separately.
For each exhaust tract, oxygen sensors,
together with the engine electronics
and injectors, regulate the composition
of the exhaust gas, while another
Lambda sensor on each cylinder bank
monitors pollutant conversion in the
respective cataly tic converter.

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Air conditioning system.
An air conditioning system with integrated
active carbon filter is fit ted as standard.
The filter traps particles, pollen and
odours. The ventilation pat tern is wide and
the air conditioning is quiet and effective.
Two-zone automatic climate control.
Two-zone automatic climate control is
available as an option. It provides an
enhanced ventilation effect and has sepa -
rate temperature controls for the driver
and front passenger. The available air
conditioning modes are gentle, normal
and strong.
The automatic air-recirculation function
permanently monitors air quality, reduces humidit y and switches from fresh to

recirculated air when required. Another
function makes it possible to use the
residual heat of the engine to heat
the passenger compartment for up to
20 minutes with the ignition switched off.
Storage compartments.
Ingenious storage solutions create plent y
of space: the lockable glove compart -
ment, the compartment with a power
socket under the armrest in the rear
centre console and the uncovered com -
partment to the front of it. In conjunction
with the smoking package, the uncovered
compartment makes way for an ashtray
with a lid. Other storage features include
t wo compartments in each door, a net in
the passenger foot well, clothes hooks on
the seat backrests and t wo practical
cupholders above the glove compartment.
Light design package.
The optional light design package
comprises dimmable LEDs in the door
panels, overhead console and footwells.
LED lighting in the luggage compart -
ments is additionally included.
‘Welcome Home’ lighting.
The ‘Welcome Home’ lighting function
automatically switches on the LED day time
running lights for a user-defined period
whenever the vehicle is opened or closed
using the key remote.
Water-repellent side windows.
The surfaces of the side windows are
treated with a water-repellent coating
so that not only water but also dirt
runs away more easily, thereby providing
clearer visibilit y even in poor weather.
1 Door storage compartments
2 Cupholder
3 Air conditioning system
4 Two-zone automatic climate control
5 Uncovered centre console storage compartment
Free space |
Interior and comfort
Wave goodbye to everyday life.
But embrace everyday practicality.
Additional comfort and convenience features.