Im on the same boat with you, ehat color wheels you looking at?
I want gunmetal or matte black, but i may end up with 18" because my tires are pretty new. If i am not satisfied, i will sell the new 18" when i needed new tires to completely upgrade to 19".
Also, you might be able to get more money for your rims if you advertise local
2008 E90 335i
Jet Black, Black Leatherette, Aluminum, Automatic, Paddle, Sport Package, Ipod/USB, Formula One Pinnacle Tint 35%, Depo Blackline, M3 reps front bumper, Black Gloss Grille, Matte Black M359, V1