A great influence on the movement of the car and its behavior on the road is exercised by the type of tire tread. If the car always drove on paved and dry roads, a tire without a tread pattern would provide the least noise and the most mileage until complete wear. The main task of the floor pattern is to remove water from the contact adhesive. If the tire is flat, at a certain speed on a wet road, there will be a phenomenon called aquaplaning. With this phenomenon, the water does not have time to be squeezed out of the contact point and the tire floats over the road, losing contact with it. At the same time, the car loses control, which can lead to an accident. That is why it is not allowed to operate the car if the floor is worn more than a certain amount. See more at vredestein quatrac 5 review
Tire wear indicator. The protrusions in the tread grooves are 1.6 mm high and indicate complete tire wear
For car tires, the minimum tread height is 1.6 mm. All modern tires have so-called wear indicators (Fig.) - small bumps in the tread grooves. When the tread wears at the level of these protrusions, they appear on the tread surface, indicating that the tire is not suitable for later use. Some winter tires have two different wear indicators - one for summer use and one for winter use. Some manufacturers use special wear indicators. For example, on some Nokian tires, as the tire wears out, the numbers appear on the tread, indicating the residual tread value in millimeters.
Tires with different tread patterns
The tread of some tires has been specially designed to provide the best grip when driving under specific road conditions. In domestic practice, several types of floor patterns are differentiated: road, for any climate, universal, off-road, winter and quarry.
Road The tread pattern has tires that provide good traction with a better road surface, especially in the summer.
All season The design is for used tires all year on paved roads. It should provide good grip on dry and wet roads, as well as roads covered with ice or snow.
Universal The tread pattern generally has the structure of the road pattern in the middle of the tire track, and the separate terminals are closer to the edges. This tread allows the car to leave a solid road and walk on dirt roads. All-terrain tread pattern provides the ability to move the car off the road, snow and dirt. The tread of a tire of this type has dissected pins, which seal the soft environment and provide the necessary grip with the support surface. Tires with career design
The steps are used for trucks that work on rocky surfaces, in quarries where the road is covered with gravel and rubble. The floor pattern must be very rare, so that individual stones do not get caught in the grooves in the floor.
Winter tire with nails without nails
Winter design The floor should provide the possibility of safe movement of the car on snowy roads and during ice. On the tread of winter tires, sections are provided for the installation of non-slip bolts.
Outside, for passenger car tires, a slightly different classification is used and the tires are divided into highway, winter, all seasons, speed and high speed in all seasons.
Highways (ROAD) Tires are designed to drive on wet or dry paved roads. The use of such tires in winter, on ice or in snow, is unacceptable, since they do not have the necessary coupling characteristics for winter tires or for all seasons.
Winter (SNOW orMUD + SNOW - M + S) the tires offer maximum grip when driving on snow and ice. Its tread has a characteristic pattern, which provides snow removal from the contact point area, and is characterized by greater adhesion properties, and the use of special components in rubber compounds helps to maintain its properties at low temperatures. However, an improvement in adhesion is usually accompanied by a decrease in the handling of a dry coating as a result of increased internal friction, wear of the tread sufficiently fast and also a higher noise level during movement.
All season (all season) The tires combine good grip on wet or snowy roads with sufficient handling, driving comfort and tread wear.