GreenBall Sawtooth. FEATURES AND BENEFITS: Enhanced durability; Turf friendly drive; All season traction; . OVERVIEW: The GreenBall Sawtooth is an all season tire manufactured for lawn mowers and other garden equipment vehicles, such as hand trucks, dollies or small utility trailers.The tire promotes great all weather traction. The flat footprint with the zigzag rib pattern enhances the dry, wet and winter road gripping capability. The tread design's elements firmly grip the road surface throughout the year, while the special tire compound keeps its flexibility even in colder temperatures. The better traction enables the tire to perform well on all turf conditions.The tire's internal structure and constant turf contact boosts the durability and handling. The structure features a four ply construction that maintains the tire's optimal shape at all times. This allows the tire to perform to its highest capability throughout the year. The tread design's better surface contact improves the steering responsiveness and driving stability. The steering becomes faster and more precise, while the structure is stabilized against the driving pressure affecting it.The Sawtooth guarantees a smooth performance. The tread design's non-directional pattern closely follows the road surface and increases the driving safely. The flat non-directional footprint manages to perform in a manner that does not damage the turf and grass field while the tires are in motion. This results in a turf friendly driving experience.This is a bias ply tire. Due to the tire's internal construction and size, it is possible that the tire will look deformed. Smaller bias ply tires do not have reinforced constructions that can keep the tire from deforming. The bias construction and the small tire's non-reinforced internal structure allow the tire to fold in when it is deflated or not properly inflated. This is not constructional damage or an issue; it is a normal occurrence with such tires. In such cases, the tire needs to be mounted and inflated to the proper PSI or, in some instances, an inner tube needs to be added. The proper PSI and the inner tube are able to maintain the tire's ideal shape, preventing the bias plies from looking deformed. This ensures their performing safety and durability. The photo is a representation of the tire's possible deformation, it does not represent the specific tire model, size, tread pattern and application. This specific tire model features a BIASED ply construction. 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.