A while ago i got a set of rims and pro comp MTs 33x12.5x17s
right now i have a 2'' BL and 2'' sl and the tires rub right where the inner fender meets the rockers. I read up on the melt mod but its not hitting that part. has anyone have this problem? i have a 09 xterra

What is the backspacing on your wheels? You should be able to clear 33's without a problem with a new X. With a body lift, most guys go up to at least a 34" or 35" tire. I can only think of backspacing being your issue.