[Goodyear Eagle GS-C performance tires] - Unidirectional tread … road water is swept away and out the sides. Wide, deep grooves … maximized handling and ultimate cornering power. Asymmetric tread design places larger tread blocks on th;e outside shoulder. Smoot, disturbance-free operation, even at high speeds. Spirally wound nylon overlays for a quiet ride even for an aggressive ultra-performance tire. Speed rated.
If you have a slow leak, suspect a nail puncture. Self-sealing tires will seal around a nail puncture but still leak. Take your tire to a tire shop for repair.