Jim
Don't let John and Jerry scare you away, they are just a little rough around the edges.
Some things they take for granted and think everyone knows it already.
Try this info on how to measure wheel bolt circle.
https://www.etrailer.com/faq-wheel-bolt-pattern.aspxThe center hub hole is also important and it's diameter should be measured and compared to the buyers hub.
Also the bolt hole diameter.
Don