2002 chevy 2500hd leveled buying 18x10in rims

 

depends how much you like your fenders! all jokes aside i have seen guys run 35x12.5 with minor trimming of the valance and inner fenders on leveled chevy's. Then again i leveled my old truck and put on 33's and it rubber

 

33's are as big as you can go with no lift

 

You have to balance out performance and looks.