911 Turbo AWD F6-3600cc 3.6L SOHC Twin Turbo (1997)
Age of tires
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Especially high-speed ZR tires should not be too old.
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Tires older than 6 years must not be used.
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The age of the tire is indicated by the manufacturer's code which follows the DOT designation.
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The production date is at the end of the code (last three digits).
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From 1990 to 1999, the three-digit code is followed by a triangle in some cases (distinguishing feature).
Example:
DOT DM CP 05 Y 279
27 = production week
9 = production year 1989
