Snow socks are an alternative to snow chains. When winter tires aren't enough, snow socks help to enhance the grip on snowy roads.
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Textile snow socks
This is a cover in textile that covers the tire and insulates the tire from snow. They do not disturb safety systems (ABS, ESP) and do not damage aluminium rims.
One important component is polyester. The fibres absorb the water and improves grip. They have been used safely up to 30 mph (50 km/h).
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Snow socks made of composite materials
Michelin manufactures a composite snow sock called Easy Grip. It is coupled with an inner elastic band to facilitate installation. To strengthen the tread and maximise road holding there are 150 galvanised steel rings.
Benefits of snow socks
Snow socks offer added benefit in that they do not disturb the safety systems on a vehicle such as ESP or ABS. Snow socks with a high polyester count absorb more surface water from the road improving grip and allowing driving at speeds up to 30 mph.
Source of the article : Wikipedia
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