Firestone Rib Implement I-1. FEATURES AND BENEFITS: All weather traction; Fuel efficient performance; Longer lasting tread life; . OVERVIEW: The Firestone Rib Implement I-1 is an all season tire manufactured for tractors. It was made to be mounted on the vehicle's free rolling axle.The tire promotes great all weather traction. The special ribbed tread pattern and the all season tire compound increase the year round terrain gripping ability and the tire's high flotation performance. This enables the tire to conquer soft and loose terrain grip throughout the year. The compound keeps the rubber's weather flexibility, even in colder temperatures, while it also resists weather damage from harming the tread area. In this manner, the tire ensures its exceptional all weather performance.The model offers a fuel efficient drive. Its free rolling axle positions eases the driving pressure off the tire and lowers its rolling resistance. The decreased rolling resistance reduces the vehicle's fuel consumption and CO2 emissions as it is the external pressure which affects the tires and determines the amount of energy it needs to keep the tires in motion. The vehicle's lessened fuel intake and CO2 diffusion promote a fuel conscious and environmentally friendly driving experience.The Rib Implement I-1 offers a longer lasting tread life. The ribbed tread design's optimal terrain surface contact and the lowered rolling resistance significantly slow the tread wear rate down, by easing the driving pressure off the tire. The model's pattern also manages to evenly distribute the pressure along the tread area. The equally spread out forces of acceleration, cornering and braking avoids the formation of irregular tread wear on the tire's surface. This combination greatly upgrades the length of the tread life and the tire's usability. 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.