Bridgestone's mission is to serve society with products of superior quality. Run-Flat Technology tires reflect that mission. With Run-Flat Technology tires, you can drive up to 50 miles (80 kilometers) at a speed of 50 mph (80 km/h) after an air loss (ISO technical standards)*, allowing you to get to a convenient stopping place. And, because you don't need a spare tire or wheel, or a jack, Run-Flat Technology tires allow vehicle manufacturers to reduce materials. Now, Bridgestone can also offer a ride that is comparable in comfort to conventional tires. Bridgestone Run-Flat Technology tires: a superior product to serve society.