Passenger car tyres are divided into summer, winter and all season. The tread can be divided into symmetric, asymmetric or directional pattern. Summer tyres can be used from spring till autumn, when the temperature is higher than 7°C. Tyres lose their properties in lower temperatures and this is the moment when it is essential to change to winter tyres. Winter tyres are designed for use in winter conditions in view of rubber compound and the tread. Winter tyres have more grooves and sipes, which provide better traction on snow. In summer tyres you can see all possible tread patterns, in winter tyres manufacturers use only two: asymmetric and directional. All season tyres have features of both summer and winter tyres. These tyres have good ratings for all year round, regardless of weather conditions. All season tyres are recommended for drivers with calm driving style, who cover ca. six thousand kilometers a year. Summer tyres are perfect for drives who cover five to six thousand kilometers a year with dynamic or aggressive driving style. Tyre manufacturers want to produce the tyres, which will provide great grip on wet and dry surface, short braking distance, fuel economy and high driving comfort. The real challenge is to design winter tyres, which have good grip on the snow, slush and wet surfaces with low noise level.