Cooper Starfire SF340 All-Season Radial Tire - 195/70R14 90S Modern All-Season Tread Design. This modern-looking radial will perform in all four seasons. Deep, Lateral Shoulder Slots. The new design uses lateral slots in the shoulder to help ensure excellent traction throughout the life of the tire. Circumferential Grooves. See-through grooves help disperse water and slush to provide dependable all-season traction. Variable Pitch Tread. Computer-designed to provide a quiet-running tire at highway speeds. Solid Center Rib. Provides a smooth ride and on-center feel.