[SOLID CENTER RIB] – Enhances high-speed stability for a smoother and more controlled ride.185/55R16 Zeta ZTR20 83VVZeta Tires[EXCELLENT DRY & WET TRACTION] – Delivers superior grip and braking performance in summer conditions.[LOW ROLLING RESISTANCE] – Enhances fuel efficiency and provides a quieter ride.[OPTIMIZED SHOULDER DESIGN] – Improves handling and stability when cornering at high speeds.[FOUR DEEP GROOVES] – Ensures fast water evacuation, reducing hydroplaning risk on wet roads.The Zeta ZTR20 is a high-performance summer tire engineered for stability, precision, and superior handling. Designed with a solid center rib, this tire enhances high-speed stability, ensuring a smooth and controlled driving experience. Its four deep grooves effectively channel water away, improving wet traction and reducing the risk of hydroplaning. The shoulder areas, separated by a narrow groove, minimize rolling resistance and enhance cornering grip, making it an excellent choice for drivers seeking optimal performance in summer conditions.