These Airless Bike Tires Rely on a Metal Alloy Designed for NASA Rovers
popsci.comscience
The Smart Bike Company's METL tires rely on a NASA-developed alloy material to create an airless tire. Inflatable rubber tires would not fare well on the surface of the Moon or Mars. The terrain is treacherous, and there's no one there to throw on a spare if you get a flat. That's why rovers typically use tires made of metal alloys that can endure the punishment that comes from puttering around on alien soil. Now, the Smart Tire Company is preparing to offer its airless alloy METL tires adapted from NASA rover tech for people to put on their earthbound bicycles.