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.
GRI Tires and Construction Tires. Both these types are often used for vehicles that perform heavy industrial work . Off the road tires produced by GRI are more durable tires built for surfaces such as sand, gravel, mud, rock and other off-road terrain. • 2002 – GRI introduces GLOBESTAR a standard solid tire to the market which runs with reduced heat build-up • 2003 – GRI opens its first off-shore sales offices in United States and France • 2008 – Introduces ULTIMATE XT, a premium-plus solid tire which consists of high abrasion resistance and tensile strength • 2008 – Launches THE PERFORMER,