Balancing Weights; Navigation System; Wheel Storage - Porsche 996 TT Repair Manual

• When replacing a tyre on an axle, make sure that the tread depth of the new tyre does not differ from
that of the other tyre by more than 30 %!
• Repairs on ZR tyres are impermissible, as is the use of inner tubes in tubeless tyres!
• When replacing summer tyres, pay close attention to the tyre specification number!
The overview of summer and winter tyres is included in Technical Information (TI), Group 4. The
specification code N1, N2, N3 or N0 distinguishes summer tyres expressly approved by Porsche from other
versions of the same tyre type and size.
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Balancing weights

Type of balancing weights: Adhesive weights as used previously (no special version necessary). Also refer to
the spare parts catalogue.
Affix both weights on the inner side (arrows).
Note
• Observe program selection and operating instructions of the balancing machine.
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Navigation system

After a wheel change, the full locating accuracy is attained only after a journey of approx. 50 km (if possible
on the motorway and at a speed > 60km/h). Additionally, high slip of the wheels (e.g. wheel spin) can result
in temporary incorrect positioning.
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Wheel storage

• Tyres must be stored in a cool, dry and dark room with adequate ventilation. They must never come
into contact with fuel, oil, grease or chemicals. Complete wheels can be stacked for storage. It is
advisable to increase the tyre pressure by 0.4 bar.
• If the tyres are not mounted on wheels, store them in vertical position. Tyres stored in vertical
position should be turned every two weeks in order to prevent excessive flattening. If the tyres are
stacked in horizontal position, they will become severely deformed and cannot be seated in the rim
flange easily when they are mounted.
Fitting
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