I have an '05 4x4 2500 and I actually lowered it. It has 305/55/20 and I have no rubbing issues. It converts to a 33" tire and I have had no problem, you just really have to check with the offset of the rim. If it is a stock rim, I really do not see an issue with 35" or even if you get an aftermarket rim with similiar backspacing.