2006 330i, TSM, Black, manual, sport
Drives: E90 330i, E86 Z4 3.0si
Join Date: Nov 2005
Location: Chester Springs, PA
Started with 18" and have NEVER regretted it!
I'm able to get an 18x8.5 front with 255/35 (wheel only weighs 17.8lbs) and 18x9.5 rear with 265/35 (wheel only weighs 18.5lbs). Saves about 10lbs per corner of rotational mass and you can feel the difference!
Get a set of wheels with the spokes going all the way to the lip. Difficult to tell they are 18".
Added sidewall helps quite a bit for rough roads.
2006 330i, TSM, Black, Sport, JIC Cross Coil-Overs, UUC Sways, 18" Advan RS, Mich PSS 255/265, BMW Electric Steering Wheel, Rogue shifter, M-Tech front, CF emblems, Dinan TB, Intake, exhaust, strut bar, Stoptech BBK, LSD, M3 susp., LUX 5, CF Hood and CSL, Sparco Seats, AA tune, CF Roof