The Dynapro AT-M (RF10) is Hankook's premium On-/Off-Road All-Terrain Light Truck tire developed for light trucks, vans and sport utility vehicles. Introduced as Original Equipment on 2015 model year Ford F-150 pickups, Dynapro AT-M tires are now available in a range of sizes that offer Hankook's best all-terrain grip and acceleration both on- and off-road. Hankook's specialty light truck compound is molded into a wide, independent block, symmetric tread design with an enlarged footprint to enhance grip and acceleration while resisting uneven wear. A wraparound tread design gives a rugged look, increases traction in muddy and snowy conditions and helps guard against cuts and bruises. Stone ejectors in the center and shoulder grooves help prevent tire damage from stone drilling or external impacts while tiered side grooves and scallop grooves between the tread blocks increase the number of biting edge to enhance off-road and wintertime traction.The tire's internal structure features two high-strength steel belts reinforced with a spirally wrapped nylon cap ply to combine strength and ride quality. A polyester casing promotes ride quality and rim flange protectors help guard expensive wheels from accidental curb damage.Note: While most Hankook Dynapro AT-M (RF10) tires meet the industry's severe snow service requirements (and are branded with the three-peak mountain snowflake (3PMSF) symbol), selected tires do not. Specific tires/sizes not meeting the industry's severe snow service requirements are identified with a "Not Rated For Severe Snow" notation on Specs. Note: While non-winter tires featuring the three-peak mountain snowflake (3PMSF) symbol provide additional longitudinal snow traction beyond what all-season (M+S) tires not bearing the symbol can deliver, they do not match the capability of a true winter tire in all adverse weather conditions. Related Information: What is the three-peak mountain snowflake symbol (3PMSF)?