The Tractionator heavy-duty series uses natural rubber and Terrapactor tread designs to increase traction by compacting and wedging the terrain. The series’ high strength ply material achieves higher ply rating with less ply layers, and the tire has reinforced sidewalls to reduce punctures and pinch flats. The tires are DOT approved for street use and are available in18-, 19- and 21-inch sizes. The Tractionator Heavy-Duty Series retails from $75 to $110.