Maxxis MA42401300 MA-Z4S Victra Z4S 215/50ZR17 95W Solid center rib designed for high-speed stability V-shaped unidirectional grooves for improved handling on dry and wet roads Multiple snow-biting grooves and optimal siping design for great traction on snowy surfaces 4 high-void, circumferential main grooves expel water for enhanced wet traction 5-pitch tread blocks and 2-in-1 groove designs minimize noise for a quiet, comfortable ride