The ECSTA SPT features a unique tread design that provides a comfortable ride, low noise, excellent handling and outstanding wet grip. The center rib provides high speed stability and rounded shoulders for even wear. Asymmetric grooves also provide stability at high speeds, while providing excellent water evacuation to resist hydroplaning. A silica compound improves maximum dry and wet grip, while high tensile steel belts and a jointless nylon full cap ply reduce noise while improving comfort and durability.