The Kumho Ecsta PA51 235/40r18xl is a performance-oriented all-season tire designed for use on passenger vehicles. It features a directional tread pattern with large shoulder blocks and circumferential grooves for improved wet and dry traction. The tire also has a high-silica compound for improved grip in wet conditions and reduced rolling resistance for improved fuel economy. It has a speed rating of V, so it is capable of speeds up to 149 mph.