... -18 and so on Motorcycle tire size as below: Diameter(inch)Specifications available 8”3.00-8, 4.00-810”3.00-10, 3.50-10, 3 ... -14,70/90-14,80/90-1415”130/90-1516”3.25-16,3.50-16,4.50-16,5.00-16,110 ... /90-17,2.25-17,2.50-17,300-1718”2.50-18,2.75-18,3.00-18,3.25-18,3.50-18,4.10-18,90/90-1819 ... ”3.75-19,4.00-19