... supply many kinds of butyl and natural tube in china. Our certificate is ECE,DOT,CCC and so on. 3.50-16 ... tires 1. High quality and competative price2. Outstanding gas tightness3. Full range size for car, ... , 250/275-17, 250/275-18, 275/300-14, 300-12, 300-16, 300-17, 300/325-17, 300-18, 300/325-18, 325-16, 325-17 ... /60-13, 130/70-12, 120/70-12 etc. Butyl and Natural 3.50-16 tires