Certification: CCC.ISO Rubber Content: 25%-55% Weight: 1.95kg PLY Rating: 4/6/8PR Load: 400kg OEM: accept ... high quality and long usage lifeThe sizes as, 1.85-17, 2.00-17, 2.25-17, 2.50-14, 2.50-16, 2 ... .50-17, 2.50-18, 2.75-10, 2.75-14, 2. ... 75-16, 2.75-17, 2.75-18, 2.75-21, 3.00-8, 3 ... .00-12, 3.00-14, 3.00-16, 3.00-17, 3.00-18, 3.00-19, 3.25-10, 3 ...