BFGoodrich All-Terrain T/A KO2 Radial Tire - 275/70R17 121R CoreGard Technology: Tougher Sidewall Rubber: Split & bruise resistant sidewall rubber, derived from BFGoodrich's race proven Baja T/AKR2 tire. Thicker, Extended Shoulder Rubber: Increased rubber thickness, extending down the sidewall to protect more of the critical sidewall failure zone. Advanced Deflection Design: Computer predicted object path design deflects protruding objects from snagging & splitting the sidewall. Specially formulated tread rubber: Optimally blended to reduce chip and tear for superior gravel road endurance. Advanced tire footprint shape: results in more evenly distributed stress, for longer more uniform wear. Interlocking Tread Design: provide increased tread block stability, for more even wear over the long haul Stone Ejectors: Rejects stone retention & provides extra tread cleanout protection against stone drilling. Upper Sidewall Traction Bars: Protruding sidewall rubber blocks that provide increased mud, snow & rock traction, especially in aired-down driving situations. Mud-Phobic Bars: Raised bars in the shoulder tread area that helps to release compacted mud for enhanced traction in muddy and soft soil conditions. Serrated Shoulder Design: Staggered shoulder blocks that provide greater maneuverability in soft soil and deep snow conditions. Locking 3-D Sipes: 3-D active sipe technology, that provides more biting edges for significantly increased snow traction. 3 Peak Mountain Snowflake: Exceeds Rubber Manufacturer Association (RMA) Severe Snow Traction requirements.