Nokian Hakkapeliitta LT2 Winter Tire -LT265/70R17 121/118Q Scuffing Protection - A strengthened part of the tires side which protects it from damage. DSI and WSI indicators - Driving Safety Indicator (DSI) and the snowflake symbol (Winter Safety Indicator) improve driving comfort and safety. The numbers indicate the depth of the main grooves in millimetres. The numbers fade away as the tyre wears down. Sipe activators - The sipe activators on the edge of the tires tread pattern enhance the sipes performance on the most slippery surfaces Information Field - The tires information field can be used to mark the correct inflation pressure and the tires place on the car during the storage season.