Originally Posted by RubberNail
I've had RV tire problems for a variety of reasons, on and off, for some 40 years. Here's one I haven't seen mentioned:
I had a plastic wheel well on a 5r which, just months old, had curled due to heat and age. Wasn't apparent and tire clearance looked good when sitting still, but rubbed the outside edge of the tire tread when the unit bounce on state highways. I happened to make a stop with one tire on the curb, and the trailing one off. What had previously looked to be ample clearance, was less than a finger width. Peering around at the inside of the plastic fender lip I could see faint traces of tire rubber and corresponding tread wear. Remedy was to add stays (metal braces) from the frame to the plastic fender to keep the fender where is was originally intended.
Recently I had a similar problem with my Micro-Lite. I posted photos and an explanation on the "General Tech and Repair" thread here: Wheel Well Liner - Forest River Forums