Carlisle Extra Grip. FEATURES AND BENEFITS: Enhanced traction; Self-cleaning tread design; Upgraded durability; . OVERVIEW: The Carlisle Extra Grip is an all season tire manufactured for farm and industrial tractors.The tire offers an improved off-road traction. The directional lug placement and the high void ratio increase the model’s performance on various terrain surfaces. These tread elements offer the needed traction to enhance the tire’s forward motion. As a result, the tire offers excellent performance for versatile applications, on industrial and agricultural vehicles.The tread design also offers a safer performance. The optimal lug placement and the tread’s high void ratio keep the footprint clean throughout the drive. They prevent mud and snow from packing between the tread elements and blocking the tire’s surface contact. They also actively resist stone retention as they eliminate rocks stuck between the tread elements before they can drill into the casing and damage the tire. This combination guarantees a safer driving experience.The Extra Grip enhances its load and diving durability. The reinforced steel belt construction maintains the ideal tire shape under the load and driving pressure affecting the model. This ensures the tire’s secure heavy duty performance as it allows the tire to evenly distribute the driving pressure along the tread area. In this manner, the tire securely carries and withstands heavy loads, promoting a secure durability and performance. 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.