228
Minor Repairs
Wheel alignment, wheel balancing
As a precaution, have wheels with summer tires
balanced in the spring, and those with mud and
snow tires before winter. Unbalanced wheels may
affect car handling and tire life.
Only the specified weights may be used for wheel
balancing.
Self-adhesive weights must not come into contact
with cleaning agents, since they could drop off.
Uneven tread wear indicates wheel imbalance. In
this event, the vehicle should be checked at an
authorized Porsche dealer.
If, during a trip, uneven running or vibrations occur
that could be caused by damage to tires or the
car, the speed must be reduced immediately, but
without braking sharply. If you continue your trip
without having the cause of the fault remedied,
you might lose control of your vehicle.
f
Stop the vehicle and check the tires.
f
If no cause for the fault can be found, drive
carefully to the nearest authorized Porsche
dealer.
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 232.
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.
High-speed tire vibration
DANGER
h
14_C7NF_21.book Seite 228 Mittwoch, 26. März 2014 12:15 12
