they are the standardized wheels -split rim 20" and used 7.50x20. . there were 5 lug , and there were also 6 lug, if you got 5 lug,,,,,,
its possible to get 19.5 wheels from a 1.5 ton step van that are the 10 lug I have heard on stovebolt-dot com-- wether its a direct bolt up without...