996 Turbo / GT2 Turbo discussion on previous model 2000-2005 Porsche 911 Twin Turbo and 911 GT2.

Diff problems when running different tire sizes ?

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Old 11-25-2007, 05:22 PM
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Diff problems when running different tire sizes ?

i was reading on here , and came across some info , and wanted to know how true it was.

the AWD system is particularly sensitive to rolling diameter- stock sizes are 0.1" difference between front and rear tire diameters. People have burned up the diff when using grossly differnet front and rear rolling diameters since this will put continuous strain on the system.

any truth to this? im running 235/35 19 s and 315/25 19 in the rear with no issues...
 
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Old 11-25-2007, 06:38 PM
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Originally Posted by unvmym3
i was reading on here , and came across some info , and wanted to know how true it was.

the AWD system is particularly sensitive to rolling diameter- stock sizes are 0.1" difference between front and rear tire diameters. People have burned up the diff when using grossly differnet front and rear rolling diameters since this will put continuous strain on the system.

any truth to this? im running 235/35 19 s and 315/25 19 in the rear with no issues...
you are fine. you do need to keep the overall diameter to within 3-4% front to back.
 
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Old 11-25-2007, 06:53 PM
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Ok, thanks tom.
 
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