092-308-0 Michelin Airstop inner tube 5.00 x 5. Michelin Airstop inner tubes feature Michelin’s exclusive advanced butyl compound providing outstanding resistance to air pressure loss through diffusion. Advanced certified valve stems feature the highest reliability rating for consistent performance throughout the life of the tube. Tubes are available in a range of sizes and are compatible with most tire brands. The exclusive Michelin circular extrusion process results in fewer joints and uniform material thickness for optimal reliability.