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.
United States Rubber Company became prosperous manufacturing waterproof cloth, rubber footwear and machinery belts. It began to produce auto tires in 1906 in its Montreal factory and through a series of mergers with other companies in Ontario and Quebec became the Canadian Consolidated Rubber Company Limited. After another series of mergers, the company became the Dominion Rubber Company Limited in 1926. It produced footwear under a variety of brand names, coated upholstery fabrics, mechanical parts, industrial chemicals and vehicle tires. In 1966, after four decades as Dominion, the company was renamed Uniroyal Ltd., along with all other company holdings, and in 1981, it was