SteveB wrote:

I have a couple of solid tires on mine. One is rock hard, the other
somewhat spongy. You might try one of those.

I use Slime in my ATV tires, and haven't had a flat in four years. Haven't
really run over anything that big, either.

I think that sitting in the sun and dryrotting is the biggest enemy of those
little tires.

Steve

That's factor, certainly although the one on the barrow here is probably
at least 30 years old in SW KS, certainly a hot/dry/moderately high UV
environment. The biggest problem here is goatheads....