Looks good man. I just bought a set of 18x8.5 as well for my e92. I apologize for my ignorance, but does the e92 have more clearance for wider tires than the e90? I remember reading it somewhere but want to confirm it was more clearance and not less, I also believe it was only front or rear, whereas the alternate was the same clearance.
btw i was planning a 255/35/18 square setup for track, but am now debating picking up some 9.5 rears instead and doing 275/35 rear....