The Petlas Glacier W661is a winter tire designed for cars and CUVs to provide reliable traction and braking performance on wet, icy and snowy roads. The center tread block provides straight line stability and the multi grooves channel water and slush away from the tire quickly. The claw tread pattern coming off the center block have multiple opposing angles for increase grip, while the heavy sipe pattern grips icy, frozen roads. If you are looking for precise handing at a reasonable price, this tire deserves your attention.