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.
Waste tires to kill advantageous bacteria in the soil, creating yet another economic problem. Originally, this was the primary form of disposal for scrap rubber (70% in 1977), but due to the decreasing availability of space, this process is no longer considered feasible. Since the inability for landfills to provide adequate space for tire disposal, other forms of disposal and reclamation have been put into place, using waste tires as both commodities (new tires) as well as a form of energy (fuel alternative). Waste tires create problems such as landfilling, health, and environmental challenges. Accumulation of waste tires, which are non-biodegradable polymers