The Continental TerrainContact A/T is designed with EcoPlus technology for long tread life, better gas mileage and improved braking. It is an ideal all-terrain tire for dirt and gravel roads while having a quite, comfortable and safe ride on the street. The TerrainContact A/T has 3 years of research and development invested to bring you the ultimate passenger tire with a balanced performance package. It also has a 60,000 mile tread life warranty for all sizes