The F3x calipers bolt on perfectly up front, but won't work in the back because of the knuckle.
WDE82 You need to swap to a 135i knuckle for them to work.
Suprgnat The diff bushings aren't worth the hassle, IMO. I did M3 ones, and they just made it noisier back there, especially with solid subframe bushings. No notable difference in how it drives.
I think I'll have to do the same hub swap that you've done once I spring for a much more aggressive wheel/tire combo. I'm planning on doing the N5tuner front fenders in the future, which allow a little more space for tire. 255's/265's square are my end goal for my car in terms of tire.
I'm still amazed how clean your car is underneath. The beauty of not being in the salt belt, I guess.
