I just installed a set of Brembo 4 Piston calipers and my SSR wheels didn't fit until I added a spacer. Now, it clears it by about 4 paper widths of clearance and just wondering if that's enough??
You are fine. The caliper does not move, and neither does the wheel. As long as you made a full test revolution and it didn't hit the wheel you should have nothing to worry about.