The recommended frequency: each 400 km of a run or weekly.
Check of a condition of tires — an important element of prevention which can give information on a condition of steering and a suspension bracket of the car and to prevent serious damages.
Depth of a protector is measured by the simple measuring tool — a depth gage. When depth of a protector reaches the minimum established by the legislation or the producer of tires, replace tires.
At survey of tires note any abnormal wear of a protector. Signs of uneven wear of a protector, such as step wear of paths of a protector, spotty wear of a protector and the increased wear on the one hand of a wheel, indicate violation of angles of installation of wheels and/or balancing. At detection of any of these signs of uneven wear find the reason and immediately eliminate. Too high pressure in tires is the reason of the accelerated wear of a middle part of a protector, at the same time coupling with the road is weakened, shock-absorbing operation of the tire decreases and danger of a rupture of the tire increases. Regularly check absence on tires of cuts or swellings, especially on side surfaces. Delete the stones or sharp objects which got stuck in a protector. Periodically remove wheels and clear external and internal surfaces of a wheel of dirt. Signs of violation of balancing of wheels usually are vibration of a body of the car (at a speed about 90 km/h) though in most cases vibration is felt through a steering wheel. Keep in mind that wear or damage of details of steering and a suspension bracket can become the reason of the increased wear of tires. Uneven wear of forward tires indicates violation of angles of installation of wheels.
Regularly check pressure in tires, support pressure at the normal level. Check pressure on cold tires before a trip or after a while after it.
If air pressure in tires falls, first of all check tires for existence of punctures or cuts. If the tire has no defects, check a state and reliability of an inhaling of a zolotnik. For simplification of search of leak of air apply soap solution on the place of alleged leak. In the presence of leak soap solution will begin to bubble.
Carefully examine the internal side surface of each tire on existence of traces of brake fluid on it. If traces of brake fluid are visible, immediately check a condition of wheel brake mechanisms.