Siping (rubber) wear and extends the life of the tire. Both Bridgestone and Michelin sell snow tires that are siped at the factory, while Saf-Tee Siping and Grooving sells machines that can sipe most standard vehicle tires. Siping can also be done by hand. Siping tires may void the manufacturer's warranty. Claims that extended life is achieved by siping may only apply to certain environments, operating temperatures, and rubber compound builds. Siped soles are a characteristic feature of boat shoes. Siping (rubber) Siping is a process of cutting thin slits across a rubber surface to improve traction in wet or icy conditions.
Crumb rubber of small black crumb pieces that came from old tires. The tire crumbs were poured in between the fake grass blades, giving the artificial fields more cushion and support. This was a better solution, as it satisfied athletes and aided in the prevention of major injuries. Rubberized asphalt is the largest market for crumb rubber in the United States, consuming an estimated , or approximately 12 million tires annually. Crumb rubber is also used as ground cover under playground equipment, and as a surface material for running tracks and athletic fields. The following are common classifications of crumb rubber: Retreaders