Those tires look a whole lot better than the 20" tires I bought new for this bus back in the '90s! if the tread's OK I wouldn't be too afraid to run 'em around town, although I wouldn't go out on the big road with 'em. Your pics show no notable cracks in the sidewalls at all-are they all in that good of shape?
Also lucky you have the 22.5" wheels already-versus the 20" widowmakers so many old 2 ton Chevys came with. Score!
