Theres a guy buying the 22" rims/tires off my 04 silverado 4x4 2500hd Im taking his 16" stock 8 lug set.. + cash, of course.. My question is: Whats the biggest tire(s) that'll fit under a 2004 silverado 2500HD 4x4 without a lift??? I was going to get 285/75R/16 BFGoodrich All Terrains but I think I can go 1 size bigger.. ?? is it possible to fit a 33" tire under the fenders without major rubbage? Any feedback and/or advice would be greatly appreciated.