My tires rub at full lock and while going over bumps with the wheels turned. they rub on the inside of the rear fender. I have a 6" sj lift and a 1" daystar level. I took my truck to a body shop today to see if he could bend or cut some of my fender but he said that the spot where it rubs is a where two sheets of metal are welded together and its very thick.

what do you guys think?