... capacity 3. Lower rolling resistance 4. Lower energy consumption Characteristics:1.Three stage construction with a concave sidewall 1) Wear resistant tread compound ... .50E,5.00S570269172362730201526051925253017901940 Other sizes available: 4.00-8, 5.00-8, 6.00-9, 5.50-15, 6.50-10 ... .25-15, 8.25-20, 15 x 4 1/2-8, 16 x 5-9, 16 x 6-8, 18 x 7- ... x 7-9, 21 x 8-9, 23 x 9-10, 27 x 10-12, 28 x 9-15, 28 x 12 1/2-15 ...