Just placed my order.
Originally Posted by Joe@ApexRaceParts
On the front with an 18x9" ET31 we recommend a 245/40/18.
Since your car is non-lci it is possible to run an 18x9.5" ET22 depending on tire size; we recommend a 265/35/18. You will need to roll your rear fenders. It will be easier to run a less aggressively sized street tire like a Michelin Pilot Super Sport. If you decide to go with an extreme performance summer tire like the Hankook RS3 than more fender rolling may be needed.
2008 E90 335i, Cobb Ap, ETS CP with TiAL Q BOV, Cyba Air Scoops, BMS OCC, M3 Rep. Front, V-Lip, M-tech Rear, BMW Performance Kidney Grill, M-Tech trunk Spoiler, ACS Roof Spoiler, OEM Blacklines, H&R Sports, Koni Yellow Sports And Apec EC-7.