Must be maintained in tires (including spare wheel) required pressure, regularly (at least once a month) check it with a manometer and bring it to normal. It is necessary to check the tire pressure when the ambient temperature drops or rises significantly and before driving a long distance.
The air pressure in the front and rear tires must be 2.2 bar.
When driving for a long time, especially at high speed, the tires heat up and the pressure in them increases. Therefore, the air pressure should be checked with cold tires before driving.
If it is not possible to measure the pressure on cold tires, it is necessary to take into account the increase in air pressure in the tires from heating by 0.2-0.3 bar. To check the air pressure in the tires, unscrew the cap of the wheel valve...
... and connect a tire pressure gauge or a pump with a pressure gauge to the valve.
If the pressure is lower than required, we inflate the tire with a tire pump or compressor, controlling the pressure on the pressure gauge.
If the pressure is higher than required...
... by pressing with a special protrusion of the pressure gauge (or suitable tool) on the spool, let the air out of the tire in small portions and check the pressure.
Tires must be free of bulges, tread separation and damage that exposes the cord.
A worn tire should be immediately, without waiting for its emergency destruction, replaced with a new one.
It is forbidden to install tires of different models on one axle, as well as tires that do not match the size or load of the car.
The remaining tread height must be at least 1.6 mm.
To control the wear of the tread, indicators in the form of protrusions 1.6 mm high are made in its grooves.
The sidewalls of the tires are marked with the letters TWI where the wear indicators are located.
You can also check the wear of the tread with a caliper.
For this...
... we lower it into the groove in the middle part of the tread (as a rule, in this zone the tread wears out faster) depth gauge probe and make sure that the height of the pattern is more than 1.6 mm.
To reduce the possibility of error, it is desirable to take measurements at three different points along the circumference of the tire. If the wear exceeds the maximum allowable, the tires must be replaced.
Regularly check the tightening of the wheel bolts and, if necessary, tighten the bolts.
If vibrations occur while driving on a flat stretch of road in a limited speed range, the wheels must be balanced by a tire shop. Vibration at all speeds can be caused by patchy tire wear, blistering or other damage, or warped rims.