Here is a pdf of Accuride's latest catalog.

http://www.accuridewheelendsolution...Accuride-Wheels-Catalog-2014-reduced.pdf

Page 21 shows how to measure rim width. 6" would be better for radials. But you will probably have to settle for what you can find. The ideal thing would be to find 22.5 wheels for tubeless, but they are very difficult to find.

Many tire dealers will tell you multi-piece wheels are illegal to change. If you scroll down the Accuride catalog, you will notice that Accuride still produces wheels for tube required tires. The tire shops just don't know to change them. 50 years ago, it was just the opposite. I was one of the first carriers to use tubeless tires, and no one knew how to change them