TYK Industries' MR14/15 inner tubes are multi-fitment, ultra high quality inner tubes that covers a range of automotive and light truck tires. Our inner tubes are up to 4X thicker than the competition. Thicker, high-quality butyl rubber prevents air from penetrating the inner tube for longer-lasting inflation, and provides better protection from punctures and leaks. TYK Industries' tubes are manufactured from a thicker butyl rubber sheet to fight ozone and weather cracking, and our superior vulcanization process creates a strong seal around the valve stem. Plus, the quick flow valve stem performs better than other tubes. Our multi-fit tube is made to be used in the following sizes: MR14/15, 265/60R14, 275/60R14, 235/70R14, 235/75R14, 265/50R15, 275/60R15, 255/60R15, 265/60R15, 275/60R15, 255/65R15, 235/70R15, 245/70R15,255/70R15, 225/75R15 and 235/75R15. TYK Industries inner tubes come with a 3-year warranty that covers manufacturing and workmanship defects. Each tube is inflation tested at the factory before boxing, so you can be assured of a successful installation every time.