IND or EAS are two venders very active on this forum. I would suggest getting something with more aggressive offsets and width's than stock. Otherwise you might as well stick with stock wheels.
'08 E90 M3 - Alpine White - Sold
'13 E92 M3 - Silverstone II - Sold
'04 E46 M3 - Jet Black - BBS E88, KW Clubsports, Brembo BBK, SuperSprint Exhaust