Summer Extreme Grip Ultra High Performance Passenger Car for Competition and Street. DOT-Approved.* Enhanced tread and sidewall construction* Competition inspired tread compound* Upgraded belt package* Large solid center rib* Directional sweeping grooves* Large shoulder blocks* Increases steering and cornering performance at the limit* Provides superior dry grip at elevated temperatures* Provides stability for crisp handling and braking across the contact footprint through turns* Provides strong wear characteristics for a tire designed to excel in competition environments* For superior steering response* Efficiently evacuate water for maximum wet traction* Maximize handling performance