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.
Nankang Rubber Tire Nankang Rubber Tire Nankang Rubber Tire Corp., Ltd. () manufactures automobile tires and other synthetic rubber products. The company's products include locomotive tires, and tires for light trucks, sedan cars, sport utility vehicles and snowfield-use vehicles. During the year ended 31 December 2006, the company obtained approximately 99% of its total revenue from the automobile tires business. In 2006, the company obtained approximately 35% and 32% of its total revenue from the Americas and Europe, respectively. Nankang Rubber Tire Corporation Ltd is the longest established tire manufacturer in Taiwan, having been started in 1940 by a group of engineers. Based