does anybody know if you can run 33x12.50 r20 on a 2003 1500HD with a leveling kit?or what is the biggest you can go?.
thanks.

 

I don't think you will ahve great results with that size tire. I've seen it done, but frankly, I think it looks too big, and the rubbing would drive me nuts.

Be prepared to do a lot of modifications to the inner fender liners and the parking brank cable on the drivers side.