From coopertire.co.uk : DISCOVERER M+S -> Studable SUV/4x4 winter tyre - D Square D2 Sipe Technology: A dense ‘zig-zag’ sipe pattern further enhances winter performance while maintaining excellent wet traction. The sipes are deep to provide performance benefits throughout the life of the tyre. - Strategically Placed Stud Pin Holes: Provide enhanced stud retention while delivering optimum traction on ice. - All-Terrain Design: Allows the tyre to perform equally well on the road and off. The favourite tyre from Turbogom.com's customers driving a DACIA Duster, KIA Sorento, LAND ROVER Range.