All 20" rims are multi piece tube type.
All 22.5 rims are one piece tubeless type.
The tires are not interchangeable between these two rim sizes, but they can be run side by side if you match there diameters correctly.
7.50-20 has the same diameter as the 8.25-22.5
8.25-20 has the same diameter as the 9.00-22.5
9.00-20 has the same diameter as the 10.00-22.5
10.00-20 has the same diameter as the 11.00-22.5
Mike B
