In case that your tires are worn out to the permitted limit
The regular check of the wear level of the tires is recommended
The image of the tire shows the location of the tread wear indicators situated in each of the main grooves of the tread. These indicators are small bulges in the base of the tread grooves.
If the tread surface is at the same level as the indicators, the tread depth is probably very close to the legal limit of 1.6 mm or below.
The recommended minimal tread depth for the winter tires is 4 mm.
WEAR OF THE TIRE DEPENDS ON SUSPENSION ADJUSTMENT AND THE TIRE PRESSURE
It is very important to note that the performance of the car and particularly the tire depend not only on its compound, construction and surface, but also on the kinematics of the suspension of the car to which it is fitted. There are sports tires which are designed for specific model and will not have perfect performance when fitted to other cars. Even in the ordinary cars regulation of the suspension is essential for theperformance of the tire and its wear – improperly adjusted front axle or vertical angle can lead to inside or outside wear of the tire. You can find the recommended pressure values on the inside of the column to the driver when the door is opened.