2004-2011 Porsche 911 2 Door Safety User Manual
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Safety for Your Porsche 911 2 Door Sixth Generation (2004-2011)

· 78 ·
Porsche, Weissac h
Safety
Ima ge 000006 
Safety
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· 79 ·
911 Carrera 
The 911 is a sports car
built to provide astonishing
levels of performance
over many years.
Yet it is the ability of the
911 to perform during a few
crucial split seconds that
may ultimately prove most
astonishing. Engineered
with sophisticated active
and passive safety
technologies, the new 911
is designed to protect the
most important thing about
a Porsche: its occupants.
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· 80 ·
911 Carrera S
Safety to us is not merely an obligation.
It’s part of our history.
Safety has always  been  given 
top priority at Porsche, since the 
very beginning. As far back as 
1966, the  911 S was equipped 
with internally vented disc b rakes. 
In 1972, the 911 RS 2.7 was 
the first  production car in the 
world to have both front and rear 
spoile rs for increased downforce.
In 1973, the 911 RS 3.0 was  
f itted with cross-drilled, four-piston 
alum inum brake calipers. We  
were also the first man ufacturer  
to equip our sports cars with 
 full-
size airbags f or the driver   
a nd  passenger as standard.
Its effective aerodynamics 
increase downward force to 
provi de excellent traction 
and ensure tha t the car 
rem ains  stable on t he road.
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· 81 ·
The 911 | Safety
911 Carrera 4S
The chassis offers a uniquely 
 balanced ride with ge nerous 
safe ty  reserves. Porsche 
 Stability 
Management (PSM) 
 stabilizes 
the chassis at the limits of 
dynamic driving performance. 
The powe rful torque of the 
engine permits easier overtaking 
and evasive maneuvers.
The braking power of the  
911 model range is simply
 
outstanding. The high-
performance Porsche Ceramic 
Composite Brake (PCCB) 
is offered as an o ption for 
the entire model range.
All of the 911 models are 
equipped as standard with full-
size driver and passenger airbags 
a nd  the Porsche Side Impact 
 Protection (POSIP) system.
Headligh ts with  Bi-Xenon™ 
technology are fitted as 
standard. Dynamic cornering 
ligh ts are 
 available on request. 
The taillight units are fitte d 
with LED  lights as standard.
The Tire Pressure Monitoring 
System (TPMS) is fast and relia ble. 
Safety. A Porsche tradition.
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· 82 ·
Dynamic cornerin g lights
Headlights.
Lots of light. No shade.
All 911 models come equipped 
as standard with Bi-Xenon™ 
headlights with dynamic range 
cont rol. The resulting bri ghtness is 
around twice that of conventional 
halogen lamps. With high or low 
beams, the lights a re str onger and 
more uniform, helping t o minimize 
 driver fatigue. A  headlight 
 cleaning system is built  in.
Also available as an optio n are 
the dynamic cornering lights, 
offering particularly effective 
illuminati on of the road.
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· 83 ·
The 911 | Safety
Sensors contin uously m onitor  
the speed, lateral acceleration  
and steering lock,  and from these 
variables, calculate the course  
of the curve. This determines the 
angle of the dynamic cornering 
lights, with low beams able to 
swivel toward the inside of the 
curve up to a l imit of 15 degrees. 
The road ahead is therefore 
illuminated muc h more effectively.
Lighting concept.
The front light units incorporate 
the direction indicators, LED 
daytime runn ing lights and the 
position lights, which provide 
 outstanding visibility and 
create an imposin g look.
LE Ds are also used for the 
 direction indicators, the taillights 
and brake lights, the additional 
brake light in the rear  spoiler, 
and the rear fog light. Thes e 
provi de better illum inatio n and 
respond more quickl y to driver 
input, so that following traff ic is 
alerted earlier. They are energy-
effici ent, eco-friendly and have 
a longer  service life than do 
conventional bulbs—as well as an 
unmistakable  desi gn, day or night.
To guide you in  and out of 
the car, reflector lamps  and 
entry lam ps are loc ated on 
the inside of the d oors.
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· 84 ·
911 Carrera 4
Standard braking system.
Positive feature: negative acceleration.
Porsche  brakes are renowned for 
thei r stopping  power, setting the 
standards for  decele ration and 
stability. They are designed to 
cope with extreme forces such  
as those experienced during  
hard braking. Perfect for the 911.
The brake cal ipers have 
a monobloc aluminum 
construction. This makes them 
tough but light  and enab les a 
rapid response and release of 
the brake. Th e pedal travel is 
short and easy to modulate.
In models with th e 3.6-liter 
engine, black anodized , fou r-
piston, aluminum monobloc  fixed 
calipers are used on the  fr ont 
and rear axles. The closed-type 
design of these brake calipers 
makes them particula rly stiff. 
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· 85 ·
The 911 | Safety
Standard brake system, 911 Carrera/911 Targa 4 Standard brake system, 911 Carrera S/ 911 Targa 4S
The front and rear brake discs 
have a diameter 
of 13 inch es 
(330 mm) for out standing 
 braking perform ance. 
The S  models have  four-piston, 
alum inum monobloc calipers 
that are larger, reinforced and 
have a striking red-painted finish. 
The front axle has larger brake 
pads and thicker brake discs.
All models have cross-drilled 
brake discs , ensuring optimal 
braking in wet conditions. The 
discs are internally  vented 
for rapid heat dispersal.
Other features include a powerful 
10-inch (254mm) brak e booster 
for reducing  pedal effort in the 
rear-drive  models, and integral 
air spoilers for enhanced airflow 
in t he brake cooling ducts.
For even better braking 
performance  with braking fo rce 
support, a 9-inch  (229mm) 
t andem brake-force  ampl ifier is 
used on the all-whee l-drive models .
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· 86 ·
Day-to-day practicality.
Straight from the racetrack.
Porsche Ceramic Composite Brake (PCCB).
On request, we can prov ide you 
with a brake system that has 
 already had to cope with the 
harshest requirements of motor 
racing—a brake system fitted in 
the cars compet ing in the Porsche 
Mobil 1 Supercup: the Porsche 
Ceramic Composite Brake (PCCB).
The PCCB ceramic brake discs  
for the 911 have a diameter  
of 13.78 inches (350 mm) front 
and rear—for formida ble braking 
performance.  The brake discs 
are formed  from a specially 
treated carbon-fiber compou nd 
that is silicated in a high-vacuum 
process at appr oximately  3,100°F 
(1,700°C). Not only are the 
resulting  braking discs much 
harder than standard discs, b ut 
they a re more resistant to heat .
PCCB is characterized by its 
low thermal expansion, which 
preve nts deformation under 
heavy braking. Furthermore, 
the ceramic brake discs are 
totally resistant to  corrosion 
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· 87 ·
The 911 | Safety
911 Carrera 4 Ca bri olet
and offer  more favorable 
noise-damping properties.
The use of six-piston, alu minum 
monobloc brake calipers on the 
front  axle and four-piston units  at 
the rear ensures extremely high 
brake forces which, crucially, 
are exceptionally consistent. The 
 pedal response is fast and  precise 
with only moderate input required.
All the necessary ingredients 
are the re for a short braking 
distance, even in  the toughest 
conditions. Moreov er, safety 
under braking at h igh  speeds is 
increased, thanks to the excellent 
fade resistance of PCCB.
The key advantage  of PCC B  
is the e xtremely low weight 
of the brake  di sc, which is 
approximately 50 -percent lighter 
than stand ard discs of  similar 
design and size.  As well as 
enhancing  performance and fuel 
economy, this represents a major 
reduction in unsprung and rotating 
mas ses. The consequence of 
this is better roadholding and 
increased comfort, particularly on 
une ve n ro ads, as well as greater 
agility and  improved handling.
Porsche Ceramic Composi te Brake (PCCB)
Please note that ci rcuit racing, 
track-day use and othe r forms 
of performa nce driving can 
 significantly reduce the service  
life  of even the most durable 
brake pads and discs. As with 
conventional h igh-performance 
braking systems, we recommend 
that all bra k e components be 
 professionally inspected and 
 replaced where necessary 
after every track event.
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· 88 ·
Passive safety: engineered design.
A crucial quality of any boxer: the ability to take a punch.
The 911 complies with all 
statutory  requirements worldwide 
in respec t of occupant safety, we ll  
in excess of the legal limits 
in terms of front, offset, side 
and rear impact protection.
The reinforce d bodyshell structure 
contains  a highly resilient 
pas senger cell, which offers high 
 levels of protection in the event  
of an impact. A patented system 
of longitudinal and transverse 
members (1) is used at the front.
In the event of an accident, three 
separate load paths absorb 
 energy, disperse the force of 
 impact and minimize deformatio n 
of the passenger  ce ll.
In addition, the front benefits from 
an  extremely rigid bulkhead cross-
member (2) made of ultra hig h-
strength steel. Th is is designed  
to absorb impact forces from the 
longitudinal members to reduce 
deformation of the footwell and 
provi de improved  pr otection  
for the feet and legs. In a minor 
collision, a s ystem of easily 
 replaceable impact ab sorbers  
(3) prevents costly damage to 
the underlying bodyshell.
Also contributing to the overall 
rigidity of th e ca r are the 
 reinfo rced doors (4). The forces 
exerted in a frontal collision are 
additionally transmitted along  
a higher load path (5). For the 
 protection of its occ upants,  
it has therefore be en  possible  
to improve the deformation 
 ch aracteristics of the 
pas senger cell even  further.
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· 89 ·
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The 911 | Safety
Since 1985, all  Porsche doo rs 
have had a “crash barrier” made  
with ultra high-strength steel  built 
into them—otherwise known 
as side impact protection. 
The 911 models a lso have 
additional reinforcement w ith 
super high- te nsile boron steel 
integrated into the doors.
Porsche  was the first 
manufacturer in the world  
to use  a  h ot-dip galva nized 
steel shell.  Today, too, high-
quality surface protection 
ensures a consistently high 
level of crash prote ction, even 
after many years on the road.
Super high-strength steel
High-strength steel
Sheet steel
Tailored blanks
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· 90 ·
911 Carrera 4S
Passive safety: airbags.
Performance and protection.
A valued alliance.
We have been innovators not only 
in production  installation, but also 
in airbag techn ology. Porsche set 
the bench mark by introducing 
a non-az ide gas generant based 
on an organic  propellant. This 
makes the d river airbag l ighter 
and more compact, an d also 
makes it easier to recycle. The 
911 models benefit from the latest 
airbag technology in the form of 
full-size airbags fo r driver and 
pas senger. These airb ags are 
inflated i n two stages, depending 
on the severity  and type of 
 accident (e.g., frontal or offs et 
frontal). In less serious acci dents, 
the airbag is only partially 
inflated, thereby minimizing 
discomfort to the occupants.
In addition to the centra l airbag 
cont rol unit on the transmission 
tunnel, a pa ir of impact sensors 
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· 91 ·
The 911 | Safety
Porsche Side Impact Protection (POSIP) system
are located nea r the headlights. 
This allows a crash to be detected 
and evaluated  far soon er and with 
considerably greater accuracy.
All 911 models are equipped with 
Porsche  Side Impact Protection 
(POSIP) as standard. It comprises 
lateral impact protection  in 
the doors as well as two sid e 
airbags.
 An integral  thorax 
airbag is located in the seat 
bac krests, while the  door panels 
each cont ain a head  
airbag. 
W ith each having a volume of 
approximately eight  liters, the 
 t horax and head airbags offer 
 excellent protection in the event 
of a side impact. Naturally, their 
design protects the occup ants 
of the 911  Carrera Cabriolet 
models and the 911 Targa 4 
models, even with the roof open.
The head restraints are integrated 
into the backrests. Also standard 
are the safety steering column, 
three-point seat belts, belt height 
adjustment (not on 911 Carrera 
Cabriolet models), front seat-belt 
pretensioners and force limiters, 
energy-absorbing elements in the 
dashboard and flame-retardant 
materials throughout the interio r.
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· 92 ·
911 Carrera S Ca bri olet
Passive safety in the 911 Carrera Cabriolet
and 911 Targa 4 models.
No need to lose your cool here, either.
Despite the modest weight of 
the 911 Carrera  Cabriolets, their 
torsional rigidity and flexural 
strength are exemplary. Body 
f lexing is minimal, even on 
une ve n ro ads. Additional brace 
members at each of the re ar 
wheel arches p rovide addi tional 
reinforcement of the bodyshell.
Increased protec tion if the car 
ov erturns is provided by an 
 automatically deploying roll-
ov er protection system. Two 
spring-loaded rollover bars 
are located behind the rear 
seats. The rollo ver sensor 
cont inuously monitors changes 
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· 93 ·
The 911 | Safety
911 Targa 4S 
in body tilt,  longitudinal and lateral 
acceleration, and contact with the 
road surface. In an emergency, 
i t  deploys the rollover bars 
within a fraction of a second.
The 911 Targa 4 models offer 
exc ellent body rigid ity—despite 
the large glass area. The roof 
bars, with optimized structure 
and strength, limit torsion to 
a minimum on uneven road 
surfaces. Additional stab ility 
is provided by a crossmember 
integrated between the glass roof 
and the rear scree n. The glass 
roof is made of laminated safety 
glass, the opening rear window 
of single-pane safety  glass.
Natu rally, all 911  Carrera Cabriolet 
models and 911 Targa 4 models 
are fitted with Porsche Side   
Impact Protection (POSIP) system  
as standard.
For open-top sports driving, 
ev en in changeable weather 
conditions, nothing stan ds 
in t he way of   relaxed driving 
pleasure. Another  di stinct 
advantage of passive  safety.
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Related Topics

Safety history & principles Headlights Lighting concept Standard braking system Porsche Ceramic Composite Brake (PCCB) Passive safety: engineered design Passive safety: airbags Passive safety in the 911 Carrera Cabriolet and 911 Targa 4 models

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