[cameronmccormick]

I know that the f30 doesn't have a lot of room for a wide tire upfront.

I'm working on understanding more about tires, size, and the intricacies of fitment.

I've currently got ugly oem 17's and want to grab something better for a summer setup (I'm in Alaska).

I found someone locally selling their 18 x 9.5's Rotiforms with 235/40 that were a little wider for his 1er than he liked.

Would this fit my rwd 328?

I've currently got stock suspension but am pondering the Bilstein b12 Ebach pro kit.

[alohasurftoad]

it will fit, however, a 235/40/18 is way too stretched on a 9.5" and less than 25.4" diameter (due to the stretch), it will increase wheel gap. you wheel need to lower it a lot and may even need spacers to reduce the gap caused by low diameter and super stretched tires.

the tire size you should have on the 18x9.5 +35 is 255/40/18.