I run 9 or 9.5 inch wide fronts from an e46. Run 12mm or 15mm depending on which wheel is installed. 18 x 9.5 et35 gets the 12mm and 18 x 9 et38 gets the 15. Basically, it works out to the same set-up as running factory rears on all four corners, which is what I did on the first e90 I had.
Dinan compliment of stuff plus PF rotors and RG63s. Enough for now.
Why, yes. I am an abrasive bastard.