Originally Posted by David@ApexRaceParts
The recommended ARC-8 fitment for an e90 LCI would be the 18x8.5" ET38 and 18x9" ET42 with 235/40/18 and 255/35/18 sized tires if you are not willing to roll the rear fenders. With rear fenders rolled, you can fit the 18x9.5" ET35 rear wheel with the same 255/35/18 sized tire, which provides a concave rear wheel that many customers prefer. Without rolling the rear fenders, this fitment would cause the rear tires to rub onto the fenders.
What a clear & comprehensive answer. Thanks! Would the 18x9" ET42 be noticeably more concave than my stock rear 18x8.5" ET39 style 287's?
I definitely want good concavity if I purchase them, but I don't know anyone who can roll the rear fenders. Any shops in MD/PA that anyone can recommend to roll fender?