GreenBall Stud. FEATURES AND BENEFITS: Versatile application; Enhanced durability; Improved traction; . OVERVIEW: The GreenBall Stud is an all season tire manufactured for garden equipment applications. The tire can be used on hand trucks, smaller garden utility trailers and other yard carts to ensure a safe performance and usability.The tire was designed with a reinforced internal structure. The strengthened 4 ply internal structure improves the model's overall durability. This construction maintains the tire's optimal shape under the load pressure affecting its casing. The tire does not deform under the pressure and it ensures a safer year round performance in this manner. The optimal tire shape enables the tire's safer performing capability and it strengthens its load carrying and withstanding durability.The Stud has great all weather and rough terrain traction. The special tread block and groove placement closely follow the terrain surface and ensure a good grip. The tread's constant traction improves the tire's dry, wet and light winter performance and it boosts the mud and rough terrain durability. The groove design disperses water and mud from the footprint, maintaining a clean footprint and avoiding hydroplaning to ensure a secure drive.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.