A 19.5" tubeless is the equal of a 17" tube type. Like said, an 8R19.5" will be 34" tall and would use a 6" rim that is commonly available. To replicate an 8.25 x 20" tube type you'll want a 9R22.5" that will have the same 38" height. This tire is spec'd for a 6.75" rim. Minimum width is 6.00 and max is 7.50, but I'd worry about rubbing with the 7.50. I talked with American Wheel Specialist in Pasco, WA, a few years ago about this and was told the 6.75" replacement rims exist but, at that time anyway, were not readily available. Since then I have seen where a fellow had wheels rebuilt by them with these narrow rims, so maybe supplies have improved. Stu
