Porsche 968 - Tyre Care Details; Tyre Storage Guidelines; Wheel Balancing Procedure; Tyre Tread Depth Importance

Storing lyres
Always store tyres in a cool, dry, dark place.
Avoid contact with fuel, oil or grease.
There is no truth to the idea that tyres wear
better after storage and aging. Chemical addi-
tives that make the rubber elastic lose their ef-
fectiveness over time, and the rubber becomes
brittle. Tyres must never be more than 6 years
old.
The age of a tyre can be determined from the
DOT-code on the sidewall (pump up the spare
tyre}. For example, if the last three digits are
121, the tyre was manufactured in the 12th
week of 1991.
Tread
The risk of aquaplaning increases as tread depth
decreases . For safety reasons, tyres should be
replaced before the wear indicators (webs in the
tread grooves, 1.6 mm high} appear.
Check tyres regularly, especially before and
after long journeys.
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Balancing
As a precaution, have the wheels balanced in
spring (summer tyres} and before winter starts
(M + S tyres}. Make sure that only approved
weights are used for balancing (self-adhesive
weights must not come into contact with clean-
ing agents, otherwise they might drop off} .
Uneven tread wear indicates wheel · imbalance .
Consult a tyre specialist.
When fitting wheels with tyres ready-fitted, make
sure that the colour-coded wheel bolt is opposite
the wheel valve . Always install the lock-up wheel
nut on the colour-coded wheel bolt. Before
removing a wheel, always mark its direction of
rotation, e.g., FR, FL, RR and RL. This precau-
tion will ensure that the wheels can be refitted in
their original positions, avoiding imbalance.