I just put my brakes together yesterday and my 15" SSR's hit on the caliper. It's only by the smallest bit so i'll be grinding the hump off the caliper which will give enough clearance. My stud pattern is 114 x 4 though so it probably doesn't help you much.

Comparing SSR's to Simmons they have a much better shape for brake clearance and don't drop diameter as much right in the middle of the rim.