The Kumho Ecsta PS91 is a passenger vehicle tire specifically designed for optimal performance in summer weather. It offers excellent traction on both dry and wet roads, thanks to its asymmetric tread design and summer weather compound. The ribbed pattern of the tread firmly grips the road surface, while the heat-resistant compound ensures flexibility in hot temperatures. To prevent hydroplaning, the tire has wide circumferential grooves that effectively disperse water and slush from beneath the tread. However, it is important to note that this tire is not suitable for use in winter conditions, as the compound and tread do not provide sufficient traction on icy or snowy surfaces. The tread design of the Ecsta PS91 includes optimized elements that closely follow the road surface. This results in improved steering responsiveness and driving stability. The ribbed pattern enhances the tire's ability to respond quickly and precisely to the driver's commands, while also stabilizing its structure against external driving pressures. Additionally, the tire's larger outer shoulder area contributes to better cornering and maneuvering capabilities. One notable feature of the tread design is the special C-Cut 3D design, which enhances the stiffness of the tread blocks. This prevents the tread elements from shifting when braking, allowing the tire to effectively shorten its braking distance. With better controllability, drivers can enjoy a safer and more secure driving experience. The Ecsta PS91 is also renowned for its high-speed performance. The 3D dimple design plays a crucial role in preventing heat build-up at high speeds, ensuring the durability of the tread blocks. Furthermore, the tire's reinforced internal structure, which consists of a rayon cord and steel belt, helps maintain the optimal shape of the tire during high-speed driving. This guarantees a consistent and secure high-speed performance capability.