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Old 11-11-2012, 05:11 AM   #13
Registered User
Join Date: Jun 2010
Location: Texas
Posts: 60
My Ride: 2005 325xi (E46)

After much thought, I think I may run 225/40/18 Front and 255/35/18 Rear. Using tire size calculators, this would be just a 0.2% change in rolling diameter (also about 1" diameter less in rear than current size to help with fitment).

I also discovered they are equipping the newer stock x-drives with a staggered bigger % difference (although this maybe programmed/accounted for). Thanks for helping me understand the potential issues. I realize it's a risk... if I'm feeling ballsy, I might give it a shot.

Thank you!
DStein is offline   Reply With Quote