Sailun S637. FEATURES AND BENEFITS: All weather traction; Longer lasting tread life; Fuel efficient performance; . OVERVIEW: The Sailun S637 is a highway terrain, all season tire manufactured for commercial vehicles. It was made to be mounted on the vehicle's trailer axle. This model also has some trailer sizes, which are manufactured for SPECIAL TRAILER USE ONLY and they should not be mounted on light trucks.The model offers great all weather traction. The symmetric ribbed tread pattern and the all season tire compound upgrade the dry, wet and winter weather road gripping ability. The compound keeps the tire's rubber flexibility in all weather, including in colder temperatures. The symmetric tread elements, with the optimal siping detail, maintain a firm and consistent grip on the road surface throughout the year. The optimal siping detail manages to prevent hydroplaning. It disperses water and slush from below the tire's footprint and effectively avoids hydroplaning in the process.The ribbed tread design's constant road contact offers a fuel efficient performance. The better traction allows the tire to decrease its rolling resistance, which is the driving pressure affecting the model that determines how much energy the vehicle needs to maintain the tire's motion. The lowered rolling resistance in turn reduces the vehicle's fuel consumption and CO2 emissions, guaranteeing a fuel conscious and environmentally friendly driving experience.The S637 promotes a lengthened tread life. The ribbed pattern's optimal road contact evenly distributes the driving pressure along the tread area. The equally spread out forces of acceleration, cornering and braking actively avoids the formation of uneven tread wear. The lowered rolling resistance eases the driving pressure off the tire, successfully slowing the tread wear rate down. This combination guarantees an extended tread life and usability. Manufacturers recommend changing tires every 10 years. As long as tires are properly stored before they are sold, the year of their manufacture will not shorten their service life.