I think 215/75's are 28"x8.5"

I'm running 30"x9.5" muds with no problem so far, the spedo may be off a bit do to tire size and you loose a little bit on the top end speed wise but no isssues so far. my spedo and my GPS are usually within a few Kms of each other.

You will burn some extra fuel and may feel that the accelaration suffers a bit, but I can live with that. I think the wider tires and taller ride make the spory handle a bit better.

If you can't find muuders that small you can fit 30's in there with no lift and have no rubbing issues with stock wheels, you "may" need to trim a bit of the bumper etc! but several people have 30's and have no clearance issues at all.

Good luck <img src="/forums/images/graemlins/kewl.gif" alt="" />