Geomax Enduro EN91EX Rear Tire Dunlop A new super soft rubber compound provides tremendous traction in the gnarliest of conditions. New construction has an additional ply to improve the linearity of the sidewall stiffness and enhance damping and absorption performance. Progressive Cornering Block Technology (PCBT) on the shoulder knobs increases surface area of the interior block, while additional tread angles enhance grip, stability, and slide control. Unlike the standard EN91, the EN91EX is neither DOT nor FIM Approved. The use of the tire and other vehicle data and information accessible through this webpage is limited to persons located in the United States of America and Canada. ALTHOUGH THE DATA IS BELIEVED TO BE ACCURATE, NO WARRANTY OR GUARANTEE IS MADE REGARDING THE QUALITY OR ACCURACY OF THE DATA. All data should be verified by a tire professional, the vehicle placard (typically located on an inside door panel or on frame), and/or the vehicle owners manual. _________________________________________________________________________________________________________