Rotated tires today, noticed something interesting. Both frt. tires are cupping on inside edge. Pass
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side was really bad, and driver's; not so much. The car seems to be in alignment, drives straight, wheel straight, so I find this strange. Anybody else have this problem? Any ideas for the cause?
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A lot of people complain of this problem. I've seen it on several S4s. This is mine when I ran 225/40R18 Toyo T1S on my 18" OZ wheels. I saw it on a car with Kumho Ecstas and DTMs (?). Others too...
<img src="http://pictureposter.audiworld.com/41738/tire-1.t.jpg">
<img src="http://pictureposter.audiworld.com/41738/tire2.t.jpg">
<img src="http://pictureposter.audiworld.com/41738/tire-1.t.jpg">
<img src="http://pictureposter.audiworld.com/41738/tire2.t.jpg">
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CPP, KMAC, one of those kits would fix that. If you are not lowered it is likely from failing upper control arms.