Thanks fixite and 3B. I am much more familiar with the Dayton type wheels, which leads to all my questions. I just read the forum tutorial and good information! The wheels I have all have 7.50-20 tires some of which are pretty nice but the rims are very rusty. As a whole (they hold air), they might make project rollers or if separated they have tires which could be put on better rims. 5 of them have the dangerous firestone center connection, and 3 have separable rings. Measurements are: 5 stud holes, 1-1/4" diameter; 7-1/2" pattern measured like the online instructions; and 5-3/4" center opening. These were not on a truck when I got them, so don't know what they fit.

I still have a few questions: Would a tire shop be able to separate the rusty Firestone types if I brought them with air valve removed?...someone informed me that that type had to be turned a little to be connected/disconnected - if so, it seems like the rust at the beads would make it very difficult. Also, just looking at a wheel off of a truck, how do you tell if it's hub or stud piloted? Last, do these Budd type wheels in decent shape have value - are they getting hard to find, or are they plentiful?

1955 GMC 630, 1959 GMC W660, 1958 Chevy Spartan 80