It's getting really hard to find 7mm hardware that the 2 piece 17" style 5s take. I can get a nice variety of 1/4" (6.35mm) nuts and bolts from MacMaster-Carr for a fraction of what M7 hardware costs (when you can find it). I'm doing a slow budget build on my e28 and I'm not into spending $200+ to replace my rusty wheel bolts.

Or should I consider redrilling to fit M8 hardware?