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.
Goodyear Dunlop Sava Tires (by Dębica), France (by Goodyear and Dunlop), Turkey (by Goodyear) and Germany (by Fulda and Dunlop). Goodyear Dunlop Sava Tires Sava Tires is a Slovenian tyre and other rubber related products manufacturer, it is now a subsidiary of the Goodyear Tyre and Rubber Company. It is located in Kranj, Slovenia. The company was formed in 1998 under the name "Sava Tyres" d.o.o., although tyre manufacturing had started in 1920. It employs over 1,400 people. It is one of the biggest and most successful Slovenian companies. Since 2006, the company is part of Goodyear Dunlop Central & South-East Europe organisation, the