Quote:
Originally Posted by mibikin
With no camber adjustment the most you can do is 235 square
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Not necessarily true. There's a guy on here that had BMW inadvertently mount a 245/35R 18 on the stock 7.5" wide ET45 front rim and he drove on it for well over a year.
http://www.2addicts.com/forums/showthread.php?t=1352752
This means you can in fact run a 245 on the front assuming you get the offsets just right. I'll be running a set of 18X8ET43 rims here soon. The rims sit the exact distance from the front strut as the OEM 18X7.5 ET45 (approximately 10mm from the strut). Considering the distance and the linked thread, I should have no issues running a 245/35R18 square setup which IMO, is ideal for this car on the street.
The issue most guys run into with running wider tires in the front is related to the offsets and wheel widths they're choosing, 18X8.5 ET35 being the most common. These wheels sit within a few MM of the strut thus the tire overlap can rub the strut. That's why most run 225/40R18 (stretched) without suspension modifications. To run wider than 18X8 rims and wider than 225/40R18 tires requires some sort of camber manipulation in most all cases.