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Responsibility | Brakes
1 Standard brakes in the 911 Turbo
Why has Porsche always viewed braking
performance with the same enthusiasm
we share for our engines and chassis?
Perhaps it is because we think of braking
as negative acceleration. For us, braking
response and the stopping distances
achieved by the new 911 Turbo models
should be every bit as breathtaking as
our throt tle response and acceleration
times. A Porsche 911 Turbo model’s
goal is nothing less than to be the
new reference point for sports car
braking. The braking performance must
provide the driver ample reassurance
that when speed needs to be shed,
the brakes will respond accordingly. In the new 911 Turbo and the new
911 Turbo Cabriolet, the brake
specification is suited to the demands
of high performance. The brake disc
diameter is 380 mm front and rear.
Grabbing hold of the front discs are
powerful 6-piston, aluminum monobloc
fixed calipers finished in red. At the
rear, 4-piston, aluminum monobloc fixed
calipers press the pads to the disc.
The brake calipers have an enclosed
monobloc construction. This makes them
tougher but lighter and enables a more
rapid response and release of the brake,
even under extreme loads. The pedal
travel is short and the biting point precise. The brake discs are cross-drilled for
better performance in wet conditions.
Other benefits of the braking system
include the Anti-lock Brake System
(ABS), designed to minimize brake fade
and keep braking response constant.
Pedal effort is reduced and braking
response improved by a tandem
vacuum brake booster. Brake-disc
cooling is optimized by air spoilers.
Electric Parking Brake
The electric parking brake, which you
can activate and deactivate manually,
releases automatically as you pull away.
A performance isn’t finished until it comes to a complete stop.
Brakes.
With the hill-hold function, you can pull
away without ever rolling back. The
system automatically detects when the
vehicle has come to a halt on an uphill
gradient, requiring intervention. PSM
then maintains the brake pressure at
all four wheels to prevent the vehicle
from moving in the opposite direction.
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Personality | Comfor t
1 Adaptive Cruise Control radar sensor |
2 Adaptive Cruise Control display
Light Design Package
The optional light design package is both
practical and aesthetically appealing. It
comprises dimmable LEDs in the over-
head console and in the areas of the
rear seats, door openers, door storage
compartments, and front foot wells.
Porsche Entry & Drive
With the optional Porsche Entry & Drive,
you can leave your car key in your pocket.
As soon as you grab the door handle
or approach the luggage compartment,
the system automatically checks the
encrypted access code on the key. Once
the key is validated, the door and the
luggage compartment lid unlock. The
engine can then be started and switched
off using the electronic ignition switch. To lock the vehicle, you simply press
the but ton on the outside of the door
handle. Porsche Entry & Drive then locks
the vehicle and activates the engine
immobilizer and steering-column lock.
Glass Tilt/Slide Sunroof
For the 911 Turbo Coupe
models, a power-adjustable tilt /
slide sunroof is available in tinted
single-glazed safety glass.
An integral power sunblind provides
shade from unwanted bright light. The
design, headroom, and aperture of
the glass roof are identical to those
of the steel tilt /slide sunroof. The
only difference is that, even when
closed, the glass sunroof still gives
you that open-to-the-sky feeling.
Reversing Camera
The optional reversing camera (only in
conjunction with ParkAssist front and
rear) facilitates reverse parking and
maneuvering. Help is provided in the
form of a high-contrast color image
with dynamic guidelines on the PCM
screen, which shows the predicted
course of the vehicle based on the
current position of the steering wheel.
Cruise Control
For greater driver comfort on long
stretches of road, this automatic
speed control function is standard on
the 911 Turbo and Turbo S models.
Cruise control operates above 19 m p h
and is activated using a but ton on
the steering-column control stalk.
Adaptive Cruise Control Including
Po
rsche Active Safe (PAS)
Available as an option, this cruise
control function regulates your speed
according to the distance bet ween
your vehicle and the vehicle in front.
A radar sensor monitors the road
ahead at up to a distance of 656 feet.
If you have set a cruising speed but
have begun to gain on the vehicle in
front because it is driving more slowly,
this is detected by the radar sensor.
The system now reduces the speed
of your vehicle up to a maximum
rate of 11 f t . /s e c by restricting
the throt tle or gently applying the
brakes, until the distance that you
have preset is maintained. Your
vehicle will now continue at a reduced speed. If the other vehicle decelerates
further, Adaptive Cruise Control will
continue to reduce your cruising
speed— even down to a complete stop.
For additional safet y, if the system
detects that the distance from the
vehicle in front is decreasing, it will
also prepare your vehicle for braking
by precharging the braking system
so that the brake pads are already
in light contact with the brake discs.
However, drivers still have to perform
heavier braking themselves.
As soon as the road ahead clears again,
your vehicle will accelerate back up
to the cruising speed originally set.
If your vehicle approaches the vehicle
in front too quickly, Porsche Active
Safe (PAS) will issue audible and visual
warnings. In addition, the system briefly
jerks the brakes and if necessary
initiates target braking, with any braking
pressure applied by the driver being
increased within certain system limits.
