So yesterday I had some new tires put on the quad, and had tireballs installed (6psi front, 7psi rear, since they are a bit softer than a regularly inflated tire).

They ride perfectly, and no more flat tires!

I’ve had them in my Rhino for years.
And the best part was, when we took off the old tires,there was a big fat nail sticking into one of the rear tires. It wasn’t losing air, but eventually I’m sure it would have worked itself loose…