The tyres and rims suitable for use on the vehicle, as well as the tyre inflation pressure, are indicated on a plate attached to the B-pillar on the driver's side.
Examples and possible causes of tire wear
1. When driving in a sporty manner, it is recommended to increase the tire pressure by 0.3 atm, based on the base value for different load conditions.
2. Winter tires usually have a pressure of 0.2 atm higher than summer tires. You should take into account the recommendations of winter tire manufacturers, and also remember that such tires have a speed limit.
3. Regularly checking your tires will help you avoid the hassle of being stopped on the road due to a flat tire. In addition, such checks provide valuable information about possible problems with the steering and suspension before serious damage occurs.
4. The tires used on the vehicles in question are equipped with built-in tread wear indicator strips that become exposed when the tread depth decreases to 1.6 mm. When the indicator appears, the tires are considered worn. In most cases, it is recommended to replace tires with a tread depth of less than 2 mm. Tread depth can also be determined using a simple and inexpensive device known as a tread depth gauge.
5. Pay attention to any unusual tread wear. Tread defects such as cavities, bulges, flattening and more severe wear on one side indicate a violation of the wheel alignment angles and/or wheel balancing. If any of these defects are detected, contact a tire repair shop to have them corrected (see illustration Examples and possible causes of tire wear).
6. Check your tires carefully for cuts, punctures, and stuck nails or tacks. Sometimes, after a tire has been punctured by a nail, it will hold its pressure for a while or deflate very slowly. If you suspect that you have such a "slow puncture," first check the tire inflation valve for leaks. Then inspect the tread for any foreign objects stuck in it or previously repaired punctures that have started to let air through again. You can verify the presence of a puncture by wetting the suspected area with soapy water. If there is a puncture, the solution will start to bubble. If the puncture is not too big, the tire can be repaired at any tire shop.
7. Carefully inspect the inside sidewalls of the tires for signs of brake fluid leakage. If any, have the brake system checked immediately.
8. Maintaining the correct tire pressure increases their life, helps save fuel and improves overall driving comfort. A pressure gauge is required to check the pressure.
9. Always check tire pressure when tires are cold (i.e. before traveling by car). If you check the pressure on warm or heated tires, this will lead to overestimation of the pressure gauge readings due to thermal expansion of the tires. In this case, you should not lower the pressure, because after the tire cools down, it will be lower than normal.
10. To check the inflation pressure of the tire, remove the protective cap from the valve, then press the pressure gauge nozzle firmly against the inflation valve and read the reading of the device - it must comply with the requirements of the Specifications (see chapter Suspension and steering). Don't forget to put the protective cap back in place to prevent dirt and moisture from getting into the valve. Check the pressure in all tires, not forgetting the spare tire, and inflate them if necessary.
11. If the front wheels are significantly worn, it is recommended to swap them with the rear wheels.
(This article is based on data from the website www.bmwman.ru)