1970 was the year when the world's first 78 seies full traction tire was introduced. The original Swamper tire is the most copied and imatated of all RV traction tires. The Super Swamper TSL, when compared to the Swamper, offers even more ... increased mileage, deeper treads, quiter, smoother ride, less rolling resistance and tougher sidewalls. Special Order Only.