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Tires that don't go flat11/15/2023 Luckily, air allows heat to disperse easily. Going 70 miles per hour down the highway, this happens about 1,000 times per minute and generates a lot of heat. Narrator: What could cause them to wear so easily? As tires roll, they constantly compress and then decompress due to the weight of the car. And certainly, people are not going to be happy if these airless tires wind up not lasting very long. Then they have to manufacture them, dealing both with cost and durability. Paul: They're going to have to come up with, first of all, with a way to design them. That's why you'll hear airless tires like the Tweel referred to as non-pneumatic. Narrator: "Pneumatic" means anything that uses air pressure. Paul Eisenstein: Here on Earth, it is much more difficult than you'd expect to replace pneumatic tires. So why do companies like Michelin and Goodyear say anywhere from 2024 to 2030 is the soonest these products will be ready to buy? What is taking so long for airless tires to hit the shelves? It's one thing to run around the lunar surface for a couple of miles and a few hours. We've even seen prototypes for everyday cars that roll over sharp nails with ease. Narrator: From the wheels of NASA's moon rover to Michelin's Tweel, we've seen tires that don't need air for decades. Account icon An icon in the shape of a person's head and shoulders.
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