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Is there a specific tire diameter size range that needs to be used?

Dus10R

By Dus10R
in 996 TT, 996 TT S, 996 GT2

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Dus10R Member

Dus10R

Posted
Posted

I've noticed that all the Porsche (N0,1,2,3, etc) tires for the 996TT have been fairly close to 25mm in overall diameter give or take .4mm or so. Do these cars have to have tires that fall within a set overall diameter range in order for the PSM, ABS, AWD, systems to work right?

I want to run Toyo RA1's but they don't come in the stock size for the rear, you have to jump up to a 305/35/18 which has a 26mm overall diameter, would this screw anything up?

nick49 Member

nick49

Posted
Posted

25mm is approximately 1 inch, and .4mm is about the thickness of 5 sheets of paper. Anyway the electronic control functions will still work as they compare wheel speed relative to each other.

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