13's 
with out f***ing with the wheel wells i think the biggest you can do and not rub is like 18x7's or 18x8's. if you tub it in the back, i have heard of 22x8's :uhoh: fitting ok. in the front, if you take out the wheel wells you can run i thnik a 20x7 (if you can find it) or 20x8.01ZQ8 said:Just curious... What are the biggest wheels that I would be able to get in my truck and still be able to lay frame with bags? I dont want to have to screw with the wheel wells and I dont want the tires to rub. Thanks!