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.
Cooper Tire & Rubber Company Cooper Tire & Rubber Company Cooper Tire & Rubber Company is an American company that specializes in the design, manufacture, marketing and sales of replacement automobile and truck tires, and subsidiaries that specialize in medium truck, motorcycle and racing tires. With headquarters in Findlay, Ohio, Cooper Tire has 60 manufacturing, sales, distribution, technical and design facilities within its worldwide family of subsidiary companies. In July 1960, the company became a publicly held corporation and was listed on the New York Stock Exchange. Cooper owns the UK-based Avon Tyres brand, which produces tires for motorcycles, road cars and for motor racing.