Tyre Age - Porsche 996 TT Repair Manual

Optimum conditions for proper storage of the complete wheels are provided by the Original Porsche storage
stand (trolley), part number 000.044.000.38.
Tyres age due to physical and chemical processes, which can impair their function. If they are stored for an
extended period, they will harden and become brittle faster than do tyres that are in continual use. Hairline
ageing cracks can occur on older tyres. If tyres are in use, the kneading action activates the plasticizer in the
rubber and thereby prevents hardening and cracking.
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Tyre age

Note
• Tyres should not be older than 6 years! Not even the spare wheel!
The age of the tyre can be determined via the manufacturer's code, which is listed behind the DOT code on the
tyre sidewall. The date of manufacture (the last four digits) is located at the end of the code.
Example
DOT DM CP 05 Y 2200
996420, 996421, 996450, 996451, 996620, 996621, 996650, 996651, 996840, 996841
Wheel storage
einordnung
22 = production
week
00 = production
year 2000
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