Hampton said:
I'm toying with the idea of going to a non-staggered setup to reduce understeer and be able to rotate tires. Is anyone here running a non-staggered setup? How wide of a wheel/tire can I fit on the front? I actually have a 540/6, but with the m5 fender liners and rolled fenders I'd be in the same boat as you m5 guys.
I run style 32 non-stagger 17x9 with 275's all around.
Wheel width means very little when it comes to inner fender clearances and rubbing. A 5" wide wheel can rub if it has the wrong offset.
The max possible wheel & tire width on the front is a function of ride height, wheel diameter, wheel offset and camber setting. Every car is slightly different due to mfg variances.
Basically the 9.5" M5 rear wheel and 540i 9" style 32's will just barely clear the strut housing with the use of 3mm spacers. Offset of these wheels is close to 24mm, so the spacer brings them to around 21mm. The 1/4" deeper backspacing of the 1/2" wider M5 wheel is only possible because the wheel is 1" larger in diameter. If you examine the angle of a strut (loosely called kingpin angle), you'll notice that wheel/tire sidewall to strut clearance increases with a larger diameter wheel.