Automotive How the Tweel Airless Tire Works | Innovation Discoveries The EngineerOctober 3, 2019January 8, 20201 Advertisement ♼— Airless tire —♼ Airless tires, non-pneumatic tires (NPT), Or flat-free tires are tires that are not supported by air pressure. They are used on some Small vehicles such as riding lawn mowers and motorized golf carts. They are … Read More