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The R-D1 from Radar is a commercial drive tire designed specifically for highway use in long haul, regional and urban applications. Featuring an optimized tread width and non-skid depth, the tire delivers excellent mileage, superb wet and dry traction, and solid driving stability. The robust block design gives the R-D1 efficient grip on wet roads, and the durability needed for years of reliable service. The tire also features an open shoulder for improved mechanical traction on the highway.