GreenBall Rib. FEATURES AND BENEFITS: Turf friendly performance; All weather traction; Enhanced controllability; . OVERVIEW: The GreenBall Rib is an all season tire manufactured for lawn mowers and garden tractors.The tire offers excellent all weather performance thanks to its stronger compound and ribbed tread pattern. The compound maintains its rubber flexibility throughout the year, even in extreme heat and colder temperatures. The tread pattern's close surface contact improves the grip the tire has on the turf surface, which enhances its gripping ability. The circumferential grooves manage to channel water away from the footprint to increase the wet weather performance.The model's stronger construction and optimized tread design work together to increase its controllability. The strengthened construction maintains the tire's optimal shape, avoiding its deformation under the driving pressure, which upgrades its driving stability. The close maintained road contact boosts the steering responsiveness and accuracy to the driver's commands. In this manner, the driver has more control over the garden equipment all year.The Rib guarantees a turf friendly performance. The ribbed tread pattern promotes a soft traction, which does not damage the turf and grass field. The tire's special soft traction enables its use on lawns and gold courts, where it is important for the tire to perform without breaking up the grass field.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.