I have looked at school busses, and around here they use 22.5 x 10, too wide to work. I had a source that would give me all the used tires that size I could take. He is retired now,so that source is probably dried up, even if they would work. I'll look into the city/county thing. I live far enough from the city they pipe in the sunshine, but at least the sunshine is clean!

1954 Chevy custom 261CID, T-5 5 Speed.
1952 Chevy 6400 2 ton hydraulic flat bed.