I do know that late model Chevy rims in 19.5" will fit the '42-46 1.5 ton (7.25) Chevy pattern but the center (pilot) hole is a quarter inch larger. I made adapters for mine and they bolt right up. Nice to be able to mount some modern tubeless even if they are an inch and a half or so smaller in diameter. I looked for the 22.5's that were on a few mid fifties for two years and finally gave up.
