Sumitomo ST717. FEATURES AND BENEFITS: All weather traction; Enhanced durability; Longer lasting tread design; . OVERVIEW: The Sumitomo ST717 is a highway terrain, all season tire manufactured for commercial vehicles. It was made to be mounted on the vehicle in all axle positions.The tire successfully improves the all season traction. It utilizes its detailed symmetric five-rib pattern and the durable all weather compound to boost the tire's grip in dry, wet and winter weather conditions. The tread upgrades the tire's grip on the road surface with additional biting edges, while the compound boosts the rubber flexibility in various temperatures. The tread's wide groove pattern manages to prevent hydroplaning by dispersing water and slush from below the footprint. This combination ensures the tire's exceptional all weather driving safety.The tread design's ribbed and detailed pattern helps lengthen the tread life. The symmetric ribbed pattern enables the tire to evenly distribute the driving pressure along the tread area. The equally spread out forces of acceleration, cornering and braking prevent uneven wear along the tread area, lengthening the usability. The durable compound's wear-resistant rubber elements manage to extend the tread life by preventing premature wear across the tire's surface. This combination manages to enhance the model's tread and service life.The ST717 features a reinforced four steel belt construction which improves its durability greatly. The stronger structure improves the damage resistance as it actively resists punctures, cuts and impact damage, preventing them from harming the tire's casing and shortening the tire's service life. This construction also maintains the ideal tire shape under the load and driving pressure affecting the model. As a result, the tire is able to carry and withstand heavy loads with ease, which significantly boosts its load capacity. The structure also allows the tire to stability during its performance, which makes its controllability effortless. There might be discrepancies of sizes between brands and models of tires which have this size formatting. As the manufacturers only provide the tire width and the rim diameter with these tires, various brands and models will have size differences. In order to ensure the correct size is purchased, the overall tire diameter that is needed should be checked.The Overall Diameter or O.D. advertised represents the tire's overall diameter in inches, once the tire has been properly inflated and mounted per the manufacturer's recommendation. This advertised number is provided to Priority Tire by the tire manufacturer.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.