M+S tyres, whose acronym stands for “mud and snow”, bear these two initials on the sidewall of the tyre and are legally equivalent to winter ones. This type of tyre is also known as “all weather” and “all-season”. Winter tyres, also known as snow tyres, in addition to the letters M+S, also have a symbol moulded on the side: a three-peak mountain with a snowflake. These latter tyres offer distinctly higher performance both when braking and on snowy roads.