Your saying the wheels wouldn't clear the calipers even on the slightly smaller rotors? A shame. I use 5mm spacers on the front with my street rims. No problems at all, well, the tire shop managed to strip a couple of the lug bolts. Thankfully, the threads in the hub cleaned up good enough to get the race rims torqued to spec. Don't let the shop over torque! I warned my shop and they did it anyway. Power tools operated by tools.

Les