COMPETITION PROVEN EXTREME TERRAIN TIRE Sticky Competition Compound for UNDISPUTED off-road traction. Extra large four-pitch Sidebiters(R) for unparalleled off-road traction. Powerply(TM) XD adds an extra thick denier cord to the angled third ply providing better puncture resistance, quicker steering response and greater stability. Stone Ejector Ribs prevent gravel from being wedged into tread grooves. This tire is not DOT approved