Friction is the key to good traction, weather is one of the most important factor to traction. Winter tyres are required to stay soft and pliable at low temperature, while all-season tyres are designed to help to provide traction in wet and snowy conditions. For regions like Scadnavia, which there is heavy snow and icey inwinter, winter tyres are needed, for regions like central Europe, while the snow is not big and the road is always wet, all-season tyres will be very useful. To chooseall-season tyres, drivers do not have to change tyres for the whole year, in general, all-season tyres will be quieter and more confortable to be used in summer season.