Sequence of works
1. Rotate each wheel completely. Carefully remove stones and other foreign objects from the tread grooves with a screwdriver. If glass or a nail is found in the tire, air may be escaping there.
2. Inspect the tires for possible tread damage (impact marks, cuts, cracks or broken pieces). If the rubber is damaged, moisture can easily get inside the tire. It is impossible to determine from the outside whether there is corrosion of the stabilizing metal cord. For greater reliability, entrust the inspection of the tires to a specialist. This should also be done in cases of increased wear.
3. The tread depth over the entire surface of the tire should be at least 1.6 mm. Some brands of tires have a special wear indicator in several places. The letters "twi" (tread wear indicator) on the sidewall of the tire indicate the location of these indicators. The car's handling deteriorates as the tires wear, especially on wet roads. For safety reasons, it is recommended to replace summer tires at a tread depth of 2 mm, winter tires at 4 mm.
4. Check that all tires are worn evenly.
5. Inspect the sidewalls of the tires carefully. Bulges and protrusions indicate damage to the internal structure of the tire.