I had a set of Maxxis 225/75/15E on a 5th wheel. The only complaint I have, is that one had a broken belt, and I put my spare on and came home. I had bought the tires on line. Liked to have never got it warranted. Finally called Discount tire direct, where I purchased them, and they were able to get it warranted, after I sent them several pix. It was on the left front position, so I was pretty sure I had not curbed it.
I would pull the wires from the plug ins on the outside of the control panel. and clean them good. I had one that was constantly a problem after setting for a few months. In fact, there was a placard on the heater,that said to clean the terminals, before replacing the control panel.
I saw a Crown Victoria,pulling a Scamp fifth wheel. It appeared that they had adapted the fifth wheel pin, and extended it down to a ball tow hitch. It was going the opposite direction from me, so I only got a short look at the stoplight.
Yankee ingenuity I guess. But frighting.