Winter tires feature softer compounds and a lot of 'siping'. Siping is used to create more biting edges to enhance traction. Softer tires create better traction but they don't last very long.
The big battle for tire manufacturers is developing tires that are hard enough to last, but soft enough to grip.
There are two main differences between winter and normal tyres. Winter tyres have a different tread pattern of wider grooves and narrow slits at the edges of the tread area, which combine to give better grip on snow and ice. The second difference is the material the tyre is made of.
The rubber used for the tread section on standard tyres gets stiffer as the temperature drops, and grip starts to reduce below seven degrees Celsius. Winter tyres use a different material which stays soft and grippy to well below zero. Tyres made with this rubber will carry either a snowflake or a mountain as a symbol on the sidewall.
For more detail visit - clickontyres.com/WinterTyres.
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