Porsche Cayenne 2011 Owner's Manual page 270

Example of a tire pressure plate
Tire Pressure plate
Information on the tire pressure plate
A Seating capacity
Maximum number of vehicle occupants,
including the driver.
B Vehicle load limit
Is the maximum total weight limit specified of
the load (passengers and cargo) for the
vehicle. This is the maximum weight of
passengers and cargo that can be loaded into
the vehicle.
Please see the chapter "LOADING
INFORMATION" on page 221.
C Original tire size
Size of tires mounted at the factory.
D Recommended cold tire inflation pressure
These values are for cold tires (68 °F/20 °C).
268
Minor Repairs
Tire traction
h
WARNING Hydroplaning
When driving on wet or slushy roads, a wedge of
water may build up between the tires and the road.
This phenomenon is known as "hydroplane" and
may cause partial or complete loss of traction,
vehicle control or stopping ability.
f
Reduce speed on wet surfaces to prevent this.
Tire life
Tire life depends on various factors, i.e., road
surfaces, traffic and weather conditions, driving
habits, type of tires and tire care.
f
Inspect your tires for wear and damage before
driving off. If you notice uneven or substantial
wear, wheels might need alignment or tires
should be balanced or replaced.
Tire wear
The original equipment tires on your Porsche have
built-in tire wear indicators. They are molded into
the bottom of the tread grooves and will appear as
approximately 1/2 in. (12 mm) bands when the
tire tread depth is down to 1/16 of an in (1.6 mm).
When the indicators appear in two or more
adjacent grooves, it is time to replace the tires.
We recommend, however, that you do not let the
tires wear down to this extent.
Worn tires cannot grip the road surface properly
and are even less effective on wet roads.
In the United States, state laws may govern the
minimum tread depth permissible. Follow all such
laws.
h
DANGER Excessively-worn Tires
Driving on worn tires can result in loss of control
of the vehicle and could cause serious personal
injuries or death.
f
Do not drive with worn tires or tires showing
cuts or bruises as they may lead to sudden
deflation and loss of control which could cause
severe personal injury.