Porsche 911 Turbo User Handbook Manual page 26

Steering.
Communication between car and driver.
In a high-performance car, the ratio gearing. Around the straight-
steering must do more than ahead position, the ratio is less
respond with precision; it must direct, enabling smoother
also communicate back to the maneuvers at highway speeds.
driver the interaction of tire and Turn the wheel harder and the
road. The power-assist steering ratio becomes more direct,
in the 911 Turbo achieves these enabling better manageability
objectives with true finesse. through twisting back roads or
in tight parking situations.
One of the key features of the
steering system is its variable-
Sensitive, accurate and engaging,
the steering is everything you
expect from a 911 Turbo.
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Wheels. A range of optional 18- and
19-inch winter wheels (all snow
Strong and light, the standard chain-compatible) are available
19-inch forged alloy wheels were from Porsche Tequipment.
engineered to extract every Vehicles equipped with the
ounce of the 911 Turbo's thrilling optional Porsche Ceramic
performance potential. Their new Composite Brake (PCCB) may
design features a two-tone finish only be fitted with the larger
that further distinguishes the 19-inch winter wheels.
Turbo from other 911 models:
The sides of each spoke are
painted in a titanium tone, while
the entire front surface, including
the flange, has a polished finish.
The front wheel dimensions are
8.5J x 19, and are shod with
235/35 ZR 19 tires. As befits
the car's rear bias, the rear
wheels are a wider specification,
11J x 19, with 305/30 ZR 19
performance tires.
The 911 Turbo I Performance
Tire Pressure
Monitoring System.
The standard Tire Pressure
Monitoring System (TPMS)
informs the driver of pressure
loss through the onboard
computer display as well as a
separate indicator light.
19-inch wheel
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