RubberMaster P811. FEATURES AND BENEFITS: All season traction; Enhanced controllability; Longer lasting tread life; . OVERVIEW: The RubberMaster P811 is a highway terrain, all season tire manufactured 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 tire promotes exceptional year round traction. The stronger compound elements and the ribbed tread design work together to increase the dry, wet, and winter weather traction. The tread elements improve the grip on the road surface with extra biting edges, while the compound optimizes the rubber flexibility throughout the performance. The groove placement allows the tire to avoid hydroplaning by dispersing water and slush from the footprint in wet weather conditions. This greatly improves the tire's performing driving safety in all weather conditions.A longer lasting usability is also guaranteed. The tread design and the durable compound improve the tread life. The durable compound elements utilize wear-resistant materials which significantly lower the overall treadwear rate. The structure stabilizes the footprint, preventing tread flexing. This, and the ribbed tread design, ensures the tire's even pressure circulation across the tread area, preventing irregular and premature wear formations. The slow and even wear along the footprint significantly enhances the tire's overall service and tread life.The P811 improves the controllability. The flat footprint and the tread's ribbed design ensure the tire's surface contact while the tires are in motion. This promotes better steering responsiveness and driving stability. As a result, the tire enhances the steering response time and accuracy to the towing vehicle's commands, while the structure is secured against the driving pressure. This results in the tire's exceptional performing ability, while it promotes a safer towing experience. This specific tire model features a BIASED ply construction. 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.