The rim 3B references [6.75"] will handle the 10.00 & 11.00 x 22.5" tires. These are direct replacements for the 9.00 & 10.00 x 20's. You increase your tire number one full number when you convert from 20's to 22.5's, so a 10.00 x 22.5 has the same tread width and diameter as a 9.00 x 20.
As of a few years ago when I checked, ALCOA wasn't producing any rims with our 6-lug bolt pattern.
Grigg has done a tech article on wheels, check it out!
Mike B
