I don't know guys, I have to call BS on this. I had my wheels opened up to the 108 MM bore when I bought them based on info I had read on here. I checked them upon arrival with my vernier caliper and they were in fact 108 MM. They hung up and scratched and scraped and had to be fairly heavily persuaded into place over the AISIN hubs. Maybe 100 MM works on some, but I can say for fact that it would not have fit in my case. Bart(nfpgasmask) and Clint(CRNCNN) have both been present when I have installed/removed wheels. They were a very tight, almost interference fit. Maybe they aren't all the same.