I had some rims built much like what Hotrod mentioned. They are 22.5 with tubeless radials and they are about the same tire height. They were pricey, so if you can get away with the 18 wheeler wheels, it would be cheaper.
A day without laughter is a day wasted- Charlie Chaplin When wrestling a grizzly bear, you have to keep at it until the bear gets tired, not when you get tired. 1948 Chevy 2-Ton
