Quote Originally Posted by Y33TREKker View Post
I did first try to grind down the heads on the allen head bolts, but when you're talking about close to half an inch, there wouldn't have been much left, and no other fasteners I could come up with made up for that much of a difference.
I just went through this trying to get Enkei GRAB6 wheels mounted.

I removed the allen head bolts and replaced them with regular old hex-head bolts. The first problem was finding the right bolts. The local hardware shops only had 5 of the 12 I needed... and it was only after that I discovered that they were the wrong grade anyway. I was able to find a store that only sells metric fasteners, and they took care of me.

The next problem was getting the factory wheels back on so I could drive back to the tire shop. When they say "100mm bore" they mean it. So I ended up grinding the corners off a few bolts. I'm not proud of it, but I *think* there's still enough metal there to be able to remove them down the line.

It turns out that although the new bolts were significantly shorter, they still just barely touched the new wheels. They ended up grinding off the grade markings. After all that, everything worked.