ST 918 - Sumitomo Tires

Features and Benefits

Computer Designed Tread Pattern - Maximizes tread pattern for excellent vehicle stability and traction in all weather conditions.
Radical Ribs - Outside shoulder ribs that act like traction bars, yet stabilize the tread for greater stability and long tread life.
Center Islands with \"Bridges\" - Gives the traction needed in wet and dry maneuvers, but has \"bridges\" of rubber spanning them to control irregular wear patterns, and help deliver long mileage. These bridges also help control tread squirm during tight turns.
Multi-Phase Shift Tread Pattern - Minimizes tire noise.
3 Deep Circumferential Grooves - Allows maximum dispersal of water from tread pattern.
Sumitomo All Steel Casing - Gives excellent resistance to curbs, potholes, and road variations. Helps to ensure better retreadability for lower cost per mile.
Multiple Steel Breakers Below Tread Pattern - Controls tread from distortion in turns for greater traction. Supplies extra protection to the casing from road hazards.
**Note: 3 steel breakers in 225, and 4 steel breakers in 245/70R19.5 size.
Curb Defense Ribs - Gives the sidewalls extra protection if rubbed against curbs.