The Grandtrek SJ6 is Dunlop's Light Truck/SUV Studless Ice & Snow tire developed for pickup trucks and sport utility vehicles. The Grandtrek SJ6 is designed to provide powerful traction on ice and in snow.The Grandtrek SJ6 molds a special glass fiber-reinforced compound into a directional tread design with a wide footprint to help disperse water to reduce the risk of slipping on packed snow and ice, enhance vehicle stability on dry roads, as well as help maintain good traction on wet and slush-covered roads. Twin central zig-zag grooves create strong snow packing pillars to provide powerful acceleration and braking while independent tread blocks provide the edges to help bite through snow.The Grandtrek SJ6 radials meet the industry's severe snow service requirements and are branded with the three-peak mountain snowflake (3PMSF) symbol.Install Grandtrek SJ6 tires in sets of four only. Due to the revolutionary traction capabilities of the Grandtrek SJ6, Dunlop recommends using Grandtrek SJ6 tires only in sets of four to provide the best handling characteristics and tire performance. Related Information: What is the three-peak mountain/snowflake symbol (3PMSF)?