Definition of M+S

M+S (Mud and Snow) tyres are those with a tread pattern and compound specifically designed to perform well in poor road conditions and low temperatures. An M&S tyre will usually have a high negative void ratio and aggressive tread pattern in order to achieve optimum grip. Additionally, a specially designed rubber compound means that the tyre won’t lose its flexibility in cold conditions.

Below is an illustration of the tread patterns of various M+S tyres: