Tire failure. If the tube let go, it only goes flat. Unless you're driving on it. How old are the tires?
That looks like the pizza cutter I had in the back of Babe, that let go one sunny afternoon, and they, of course, do not have innertubes. BTW, what is that mounted to?
Pressure washer - tires a good 10 years old, always exposed to the elements, Chinese? origin. Rather shocking when it let go. I thought it an engine backfire till I quit washing. I have an equal quality replacement set of tires coming from Amazon, ha.
I just went to the J/Y for a replacement for Babe. Likely about the same cost, but made here in North America, for sure. And it has an aluminum wheel!
