Nitto's Mud Grappler was made for exploring -- no matter what you throw at it, this tire will get you through the most extreme terrain. The tread blocks are designed so that lugs are biting the ground at all times, and strengthened to improve handling and stability when you're back on the road. Massive side lugs protect against punctures from trail obstacles. And the bone-crushing tread and lizard skin lugs are some of the coolest designs we've seen.