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192 Minor Repairs
Wheels with Tire Pressure Monitoring
System (TPMS) sensors
Before changing wheels, make sure that the
wheels are compatible with your vehicle’s TPMS.
f Check this with your authorized Porsche
dealer.
Removing and storing tires
f After changing, adjust tire pressure and torque
wheel bolts diagonally.
Please see the chapter “CHANGING WHEELS”
on page 196.
f Store tires in a cool and dry place. Rotate
periodically to avoid flat spots.
f Do not store summer tires or park vehicles
fitted with summer tires at ambient
temperatures below 5 °F (–15 °C).
f Avoid contact with fuel, oil and grease.
Tires must always remain on the same side
of the vehicle.
When wheels are removed, the direction of
rotation and position of each wheel should be
marked.
Example
FR (front right), FL, RR and RL.
Wheels must always be fitted in accordance with
their marking.
The perception that tire durability and
performance are not affected by storage and age
is unfounded.
Chemical additives, which make the rubber
elastic, lose their effectiveness over the course of
time and the rubber becomes brittle and cracks.
Therefore, the tires should be inspected from
time to time.
Information
Under no circumstances should tires older than
6 years be used on your Porsche.
The age of the tire can be obtained from the “DOT”
code number. If, for example, the last four
numbers read 1211, then the tire was produced in
the 12th week of 2011.
Snow tires
The installation of Porsche approved snow tires is
recommended.
Use Porsche approved snow tires for grip on snow
and ice. Summer performance tires are not
suitable for usage in cold, snowy, or icy
conditions.
Check with your local Motor Vehicle Bureau for
possible restrictions.
The standard tires profile and rubber mixture are
optimized for wet and dry driving conditions, and
may not prove favorable for snow conditions.
f Install snow tires before driving in such
conditions.
Risk of insufficient road grip leading to loss of
control and damage to the vehicle.
The standard tires profile and rubber mixture are
optimized for wet and dry driving conditions, and
may not prove favorable for snow conditions.
f Install snow tires before driving in such
conditions.
Before mounting snow tires, consult with your
Porsche dealer. They have the technical
information necessary to advise you on wheel and
tire compatibility.
f Snow tires should have the same load capacity
as original equipment tires and should be
mounted on all four wheels.
Driving the vehicle with low tire pressure increases
risk of a tire failure and resulting loss of control.
Furthermore, low tire pressure increases the rate
of wear of the affected tires and causes damage.
Tires with badly worn treads are very dangerous
and could cause accidents.
f Make sure they are replaced immediately.
f Do not exceed the snow tire speed rating.
Snow tires do not have the same degree of
traction on dry, wet or snowfree roads as normal
tires.
Furthermore, snow tires wear rapidly under these
conditions.
Snow tire use
WARNING
h
NOTICE
Tire hazards
DANGER
h
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