The air pocket is built into these molded tires, so unlike air filled tires, they have no tubes or valve stems and cannot be inflated. These tires are made of solid rubber with a hollow air-pocket through the center of the tire. Semi-pneumatic tires are also Flat Free because they don’t go flat, but they do not provide the bounce or cushion of flat free or air filled tires. Air filled tires are lightweight and due to the price and performance are often a chosen by OEM’s for new equipment. Though they require more maintenance, they are cost-effective and provide a great bounce and cushion. Flat free polyurethane tires are more expensive than pneumatic and semi-pneumatic tires, but due to the performance and the cost savings of not having to deal with flats, these tires are our top selling tires.Īir-filled tires provide great performance and are a less-expensive replacement tire option. Our polyurethane foam is comprised of trillions of air cells and the self skinning foam provides a tough outer skin. No tubes no re-filling with air no more hassle! Our Flat Free Tires are non-marking, and because polyurethane is UV and chemical resistant, they will not crack or rot like rubber tires do. Our Flat Free Tires have the bounce and cushion of an air-filled tire with the benefit of no flats. Marathon’s Flat Free Tires are made of solid, lightweight, micro-cellular polyurethane foam. Flat Free, Air-Filled, Semi-Pneumatic, and Foam-Filled Comparison
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