Here is my F30 with track wheels at Bimmerfest. The APEX ARC-8s are 17X9" ET42 with no spacers. The wheels weigh about 17 lbs. each. This is a really clean fit even without camber plates.
Here are the details:
APEX ARC-8s 17X9" ET42
Hoosier R6 245/45/17
Suspension: KW V3
Camber ft.: -0.7
Camber rr.: -1.9
F30-ARC-8-satin-black-17s by
ApexRaceParts, on Flickr