Defining Winter tyre

From November 2012:

UNECE Regulation 1
17, to be implemented in the EU through Regulation (EC) 661/2009, requires for snow tyres a minimum level of performance threshold on snow (braking and traction).  If the tyre meets the criteria, it can be marked with the new three-peak snowflake symbol.


However, "M+S" will also remain an allowed marking, but not linked by law to a minimum threshold in winter conditions.