I removed the original mud flaps when I added the SCA flares. That was the major rub. Had to cut away some of the felt liner, I still have minimal rubbing on reverse turning. I am waiting for the Ready Lift level kit for trail Boss then air bags on rear. I don't want to go too high on the lift because I tow boat and soon RV. I am Hoping the level will take the rest of rub out. I will keep you posted.