SP SPORT MAXX GT600 DSST is an extreme-performance tire with Run-Flat technology. SP SPORT MAXX GT600 DSST features a solid center rib helps enhance steering response and driver feedback. Circumferential and lateral-sweeping grooves help provide efficient water evacuation for enhanced wet traction. Asymmetric tread pattern helps provide a balance of wet and dry performance. Jointless Band Technologyô helps maintain the tire's shape, enabling smooth performance at highway speeds. Multi-Pitch Tread Design Technologyô helps reduce noise for a quiet ride. DunlopÆ Self-Supporting Technology (DSST)Æ uses a patented sidewall construction to allow continued driving on a flat tire for up to 50 miles at 50 mph in normal conditions.