Traditionally, car tires have been filled with compressed air. Air is 78 percent nitrogen and just under 21 percent oxygen, ...

We've used rubber tires filled with air for so long that it's hard to think about an alternative, but they do exist -- ...

Hankook is continuing to develop a non-pneumatic tire for passenger cars, and the iFlex is the ... As the name suggests, NPTs do not require air pressure. Hankook Tire has continued researching ...

To avoid complication of neglectful car owners ... the contact patch of an airless tire can be far more consistent and flat. By having no air, it no longer rests on the driver’s shoulders ...

Narrator: From the wheels of NASA's moon rover to Michelin's Tweel, we've seen tires that don't need air for decades. We've even seen prototypes for everyday cars that roll over sharp nails with ease.

(There is no harm in mixing in regular air ... This common pitch is compelling: Filling your car’s tires with nitrogen will ...