How much space would be required between the top of the caliper and the inside of the wheel? are there certain 17's that shouldnt be used? I am assuming that with the way these PBR calipers are designed that even with new pads and pins, there may be a slight bit of movement of the caliper when the brakes are engaged? maybe im wrong but you'd think with manufacturing, that these parts arent 100% perfect. i can slide a piece of white computer paper through the wheel but it slightly drags on the caliper. its SOOOOOO crazy close...thoughts???