Car tyres are various, may be you are familiar with PCR Tyre,BIAS Truck Tyre,But if you live in the northeast or colder north, then you may also come into contact with a kind of car tyre -snow car tyre (also called winter tyres).
Snow tyres have a softer tread and finer pattern, which adds to the control of the snow. Usually the snow tyres have pictographic mountains and snowflakes logo.
Ordinary snow tread patterns and HT tyres similar to the basic, but coarse patterns will be the middle of a finer pattern to cut ice and snow pavement, improve grip, to ensure traffic safety.
Encounter more extreme road conditions, such as icy road, there will be nail tyres, although this tyre grip better on ice and snow, but this kind of tire rarely used, because it will damage the road.