Quote:
Originally Posted by X4guy
So for winter tires lowest size is 19 or 18 to clear the calipers?
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On the M40i, with BMW supplied rims, 19". Apparently some aftermarket rims are fit at 18". The 19" are 55 series tires with 235 tread width. That is only 6mm less sidewall than the 18" 225 60