When the going gets tough, the Cooper Discoverer S/T Maxx LT35X12.50R20 121Q is equipped to handle rough terrain. It provides long, even wear on the highway and excellent performance during all seasons, on or off road. Cooper's proven and reliable 3-ply Armor-Tek3 carcass construction is combined with a proprietary cut and chip resistant tread compound, and together with a modern hybrid 4-5 rib tread design and unique tread features, the S/T Maxx is destined to be a commercial grade traction tire that performs in the toughest terrains while retaining remarkable on-road traction, stability and low noise characteristics. The Discoverer S/T Maxx is designed for commercial light truck and high-powered torque vehicles. Its class-leading 3-ply Armor-Tek3 construction contributes to durability by adding strength to the sidewall and tread area, and a unique angled ply construction absorbs and helps dissipate impact forces that can damage a tire in harsh off-road conditions. Stone ejector ribs help discharge debris and resist stone retention. Maxx Toughness, Maxx Traction... No Compromises!