Quote:
Originally Posted by ayao
OEM 18" tires on the E9x M3 platform are staggered 245/40/18 and 265/40/18. So your logic is correct.
However some of the track folk who have opted for a square 18" setup run 275/35/18 square to dial out some of the understeering tendencies of the stock setup.
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275/35/18 is the most common track tire ...
And some of us even run Bridgestone 285/30/18 square
