Many words for snow: Nordic roads challenge tyre makers

Winters like those seen in the Nordic regions are never to be taken lightly, with winter temperatures south of -20 degrees Celsius (-4 degrees Fahrenheit) not uncommon on the approach to the Arctic Circle. Tyre choice remains critical for drivers, not just for dealing with ice, but for snow in all its phases - from newly fallen, to hard and compacted, to wet and slushy. For those unaccustomed to sub-zero driving, conditions can be more varied than first suspected.