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.
That wing nut on the little trailer always worried me...and so did the possibility that someone might walk off with my tank!
Solved both problems by scrounging around in the shop 'til I found a nice stout piece of flat steel bent into a squared-off u-shape. It even had a couple of holes in it! It fits perfectly over the tightened/lined up wingnut "wing" and the bar that holds the tanks on.
A long shaft padlock completes the set...keeps the wingnut in place AND deters theft, at least temporarily.
I did the same.