Different - THE TIRE WITHOUT AIR IMPOSSIBLE TO PUNCTURE Uptis (Unique Puncture-proof Tire System) is the first example of a new generation of airless road tires. Thanks to the high-tech materials of
Michelin is designing tires that can't go flat
How to Let Air Out of a Tire: 11 Steps (with Pictures) - wikiHow
Why Airless Tires Are a Bad Idea - DePaula Chevrolet Blog
Blog Post | The Air-Free Tire? It's Not Science Fiction Anymore | Car Talk