... ,8.50-20, 6.00-20, 7.00-20, 7.50-20, 8.00-15, 9.00-15, 9.75-15, 10.00-20, 11.00 ... -15, 11.00-20 ... ,etc 2.Tractor/Agricultural wheel rims:5.50x16,9X15.3 ... wheel rim/Tube wheel rim:5.50-15, 5.50-16, 6.00-16, 6.50-16, 6.00-20, 6.50-20, 7.00-20 ...