- Gear Shaped Block Edges - The gear shaped block edges reinforce center tread blocks and provide a stable contact patch. They also help reduce stone retention and stone drilling. - Variable Pitch Tread Blocks - The computer analyzed tread block arrangement reduces tire noise normally heard at highway driving speeds. - Sidewall Technology - The staggered shoulder blocks provide biting edges for off-road traction in loose dirt surfaces. The 3-ply sidewall with large sidewall lugs offer additional sidewall strength and puncture resistance. - Dual Sidewall Designs - Each Grappler has two sidewall designs so you can choose how your tires look. On the Exo Grappler one side has three-dimensional buttresses and the other has Y-shaped buttresses. This feature was an engineering feat since even a small weight imbalance can cause unwanted vibrations. Nitto produces exceptionally uniform off-road tires even with different designs. - Durable Compound - A special mix of natural rubber, high strength polymers, and wear resistant materials aids cut and chip resistance on unpaved gravel roads. - Stone Ejectors - Spiral shaped stone ejectors serve to reduce stone retention, as well as stone drilling. - Winter Performance - Rated with the 3-peak mountain snowflake for winter driving conditions, the Exo Grappler's sipes and large lateral grooves provide biting edges as well as water and snow/slush evacuation. These tread features are combined with a new durable compound that allows for traction in freezing temperatures. For additional traction, option TSMI #15 studs can be added for increased winter traction.