The Golfball-like Silent Groove Design For A More Pleasant Response And Higher Mileage

The semi-round cavities on the sides of the longitudinal ribs

, resembling a golf ball pattern, cool the Nokian WR A3 and make it safe even at high speeds. This innovation, called Silent Groove Design, also reduces drag and ensures better mileage thanks to lower fuel consumption. Moreover, it successfully minimises the inside and pass-by noise of the vehicle: the cavities cut off the noise stimuli generated by air flow and prevent any unpleasant, whistling noise.

Tyre noise is a key factor behind a pleasant driving response. The Silent Sidewall Technology increases driving comfort. Both Nokian WR tyres have a distinct zone in the sidewall, which filters the noise and vibration emitted from the road surface through the tyre tread and relays it to the bead area to reduce the noise heard inside the vehicle.


The new innovation 3D Lock Sipe featured on the WR A3 locks the outer shoulder area's blocks together during the contact with the road, which makes the structure sturdier. The blocks cannot move when driving; instead, they support each other. This ends unnecessary sipe movement, which lowers the tyre's heat emission and further enhances its driving properties.


Winter Safety Indicator for added safety and comfort


Flawless winter driving is possible only if the tyres are in good condition. Nokian Tyres' new products are equipped with the comfort-adding Driving Safety Indicator (DSI) with the unique snowflake symbol, the Winter Safety Indicator.


Patented by Nokian Tyres, this standard element located on the tyre's tread blocks indicates the depth of the main grooves in millimetres. The snowflake symbol remains visible until the groove depth is four millimetres. When the symbol disappears, the vulnerability to slush planing and other such phenomena increases significantly and the driver should purchase new winter tyres in order to ensure safety.

The tyre (in Norwegian: dekk) sidewalls have the familiar info area for tyre pressure recommendations. The right tyre pressure makes steering more accurate, reduces tyre damage and lowers fuel costs.

Nokian WR tyres are available in a wide range of sizes from 13 to 20, speed ratings ranging from T to W. These new winter products aimed particularly at the Central European markets will be available for retail in the autumn of 2011.

by: Harri Barck

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