Quote Originally Posted by simontibbett View Post
But wouldn't a spacer make the wheel not touching the hub anyway and the space touching flat?

I get spacers for free so that's not a concern and have bored wheels out before it's just a total PITA.
Ah, you are referring to traditional spacers. I thought you were getting the spacers that are still hubcentric. Even with that it would only work if the spacer being used is thicker than the mounting point for the wheel on the hub.