Man I'm trying to scare you off it. It seems weird, but size don't matter as much as real fit. If that makes sense. I hate to see you have to wrestle it and have a bad experience. If you really want to do it, I know it will look really cool.... but you have to have that tire mounted on a rim and actually try it JUST ONE On the front Right side of the X. If it fits there, with just the MC MOLD MOD And don't rub on full turns, Jacked all the way stuffed and extended all the way down. Then you will be ok. But you know you won't be able to fit on a set of chains and MPG will suffer from 2 to 4 MPG. If it's a mail order, explain your dilemma and have em mail you one rim only. This is my story I am sticking to it and some people will back me. I have no Idea on the offset But I am inclined to advise the lower numbered one, try to stick close to factory or it will stick out too far and rub everything! This is my last Public word on this. Flame proof suit on until 2am. MC