I've added my setup in a few threads ... but here it is on the car (as I seemed to be the target of a lot of "discussion"/"debate" within this thread regarding my proposed 19" staggered setup).
What I like best about the setup is that it doesn't look like a winter setup (i.e. big, bulky, ugly treads sticking out). LM-60's give the car an almost non-winter look. Plus, the 19's don't hurt.
225 Fronts x 19 x 8.5 x 35+ET, 255 Rears x 19 x 9.5 x 38+ET
Rims are ZCP M3 Replica Competition Rims
Rubber Blizzack LM-60s
Full thread on setup:
http://www.f30post.com/forums/showthread.php?t=765582