- Easy to drive at the grip limit - Specialized tread compound with a predictable and consistent grip character that's easy to drive at the limit and inspires confidence for the quickest lap times. - Razor-sharp steering response - g-Control sidewall inserts generate tremendous corning force with excellent driver feedback. - Competition Ready - Minimal break-in required; molded at 4/32-inch tread depth; no shaving required. - Quick warmup - Softer compound on R1S warms up quicker for high performance during autocross, cold temperature tracks, and spring racing.