I plan on running 33" tires. I am not sure what rims I am going to run yet. My grandfather gave me a set of American Racing mags, the old 5 slot style, but they are 16.5" rims and finding tires is a PITA...I have a set of the new style Chevy 2500HD rims, bought them off of Craigs List before I realized that the front backspacing is wrong and needs a spacer to clear the tierods...and I have some 16 steel rims...my wife is getting concerned that it's starting to look like a tire shop.