NASA has introduced one of its most groundbreaking engineering innovations: a superelastic, airless metal tire made from Shape Memory Alloy (SMA) — a futuristic material capable of bending, crushing, deforming, and instantly returning to its original shape. Originally designed for Moon and Mars rovers, this next-generation tire is now being prepared for real-world use on Earth.
Crafted from a nickel-titanium alloy, NASA’s SMA tire does not require air, meaning no punctures, no leaks, and zero blowouts. Unlike rubber tires that crack in cold conditions or burst under pressure, this space-grade metal wheel can survive extreme temperatures, intense radiation, sharp rocks, and uneven extraterrestrial terrain — making it perfect for lunar and Martian exploration.
Because the material “remembers” its form, the tire absorbs impacts and reshapes itself instantly, ensuring flawless durability even on harsh regolith-covered landscapes. NASA engineers say these tires offer exceptional flexibility, traction, and longevity while requiring virtually no maintenance.
In an exciting leap toward consumer technology, NASA has partnered with The SMART Tire Company to introduce METL tires, an Earth-ready version of the SMA tire, envisioned for bicycles, cars, and electric vehicles. These airless tires promise longer lifespan, greater sustainability, and enhanced road safety — potentially redefining global mobility standards.
Experts call NASA’s superelastic tire one of the most impressive examples of space-to-Earth technology transfer, showcasing how innovations built for other planets are now poised to transform transportation right here at home.
