- VARIABLE SIPE DENSITY - Inside Tread: Higher sipe density for excellent traction on ice and snow. Outside Tread: Lower sipe density for traction on wet and dry roads. - SLUSH GROOVES - Evacuates slush for increased traction on slush and snow. - SNOW CLAWS - Improves deep snow traction. Increases block rigidity for better ice and wet traction. - MULTI-WAVE SIPES - Minimizes irregular wear for a smooth, quiet ride. Improves braking on icy, wet and dry roads.