While Michelin have been shipping Tweel ... While an airless tire, by definition, can’t puncture or run flat, it has its own unique set of problems. Spokes can be cut, torn, ripped or otherwise ...

The company has prioritized invention and innovation ever since, with the first run-flat tire produced in 1934 and the first steel-belted radial tire in 1946. In the 1960s, Michelin began offering ...