Doublestar DSRT81. FEATURES AND BENEFITS: Enhanced controllability; Upgraded load durability; Longer-lasting tread life; All season traction; . OVERVIEW: The Doublestar DSRT81 is a highway terrain, all season tire made for trailers. This tire is NOT MEANT TO BE MOUNTED ON LIGHT TRUCKS, as its construction will not support the weight and performing style of such vehicles. It can ONLY BE MOUNTED ON TRAILERS.The all season performance is ensured with the ideal tread design and the all season compound. The ideal tread design and the all season compound increase the tire's traction in dry, wet, and winter-weather conditions. In other words, the ideal tread pattern generates biting edges to increase road grip, while the silica compound keeps the rubber flexible in changing temperatures. At the same time, circumferential grooves effectively eliminate water and slush from the footprint. They resist hydroplaning and ensure the tire's safe performance, even on wet roads.Superb controllability is provided with this model, thanks to the tread's road contact. The ribbed tread design's close road contact increases steering responsiveness and driving stability. In other words, the steering response time is faster and more precise to the driver's commands, while the structure is secured against driving pressure. The outer ribs and the close road contact enhance cornering and maneuvering. These elements offer a safe driving experience.Lengthened usability is guaranteed. The optimized footprint and the strong compound work together to increase the service life. The even pressure circulation avoids irregular wear formations along the tread area, while the compound decreases the overall treadwear rate. The tread's slow and even wear manner significantly elongates the tire's service life.The Doublestar DSRT81's robust structure and the rubber compound its heavy-duty performance. The reinforced internal structure maintains the ideal tire shape under load and driving pressure. The tire does not deform under pressure, which allows the tire to greatly enhance its load-carrying and withstanding ability. In this manner, the tire is able to greatly upgrade the tire's load capacity and handling power.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.