Colorado-based Britek Tire and Rubber has developed puncture-proof tires that eliminate the need for air.

Called ‘Energy Return Wheel’ (ERW), the wheels not only prevent flats, but also improve performance and fuel efficiency for cars.

Instead of air, the ERW has a layer of rubber at the center, stretched and held by adjustable rods that provide cushioning.

Users can also adjust the rubber tension in the rods to make the wheels run harder or softer, to suit different terrain types.

via Design Taxi


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