The Grandtrek WT M3 DSST ROF has strong winter traction giving excellent grip in various road conditions. It features a directional tread design with high density sipes for driving in winter. In addition, the zigzag sipes and tread blocks help in grip with icy and snowy roads. It also features a very durable sipes for tire's long life. Its Dunlop® Self-Supporting Technology (DSST)® *sports a patented sidewall design that allows driving on flat or deflating tire up to 50 miles at 50 mph in normal condition.