The Crugen HT51 is Kumho's Highway All-Season tire developed for drivers of light-duty pickups, vans, crossovers and sport utility vehicles looking for durability, a comfortable ride and all-season capability, including light snow traction.The Crugen HT51 utilizes an all-season tread compound molded into an asymmetric tread design with an optimized geometric block layout for maximum treadlife. The five-rib tread design features a stiff center block design for improved straight-line stability and enhanced dry traction. Four wide, circumferential zigzag grooves create a vortex effect to enhance water flow-through, increasing hydroplaning resistance, while 3D zigzag sipes provide the biting edges necessary for light snow traction.Beginning in the 13th week of 2017, all Crugen HT51 tires manufactured are branded with the three-peak mountain snowflake (3PMSF) symbol, indicating they are severe snow service rated. Tires manufactured before this date may not bear the 3PMSF symbol, but all Crugen HT51 tires meet the standards required for severe snow service rating.The tire's internal structure consists of a two-ply polyester cord body for enhanced ride quality and improved strength. Two wide steel belts sit on top of the casing and are reinforced by two spirally-wrapped nylon cord caps, enhancing handling, durability and stability at highway speeds.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)?