I have a 2005 Chevy Dully 3500 RWD. I recently had a brake issue and had to change the RR rotor and caliper and the wheel seal. In the process I decided to also replace the LR caliper wasn't necessary but I decided to replace them both the rotor was fine. I then rotated the tires which are oversized 235-85-16 the truck calls for 245-75-16 I have spacers between the tires. When I spin the rear wheels I heard a grinding sound. I checked and found that the top of the new caliper bracket was rubbing against the inside of the rim. I took the new brackets that came with the calipers off and installed the old brackets, but it still rubs against the inside of the rim. It didn't rub before this brake job or at least I don't THINK it was rubbing. My next step is to rotate the tires back to were they were, but if that doesn't change anything I'm at a loss. Could the rims be bending they are 14 years old. The truck only has 90K on it. Its an truck when I need one. I put at most 1K per year on it. Its garage kept. Any ideas????