Tire pressure
The mass of the car flattens the tire at the area of its contact with the road. Tire rolling leads to forced deformation of the tread and the entire breaker. With insufficient pressure, the forced deformation increases, resulting in an increase in temperature and rolling resistance. These factors lead to increased wear and have a negative impact on driving safety.
Too high air pressure in the tire leads to increased wear of the middle part of the tread and impairs comfort. It is recommended to always maintain the air pressure in the tires specified by the manufacturer.
Note: The charts shown do not apply to the entire range of products.
Note: They are needed to show tire wear on the front and rear axles, as well as tire wear on front and four wheel drive vehicles.
Note: Depending on the operating conditions and the running gear, the achievable tire lifetimes may differ greatly from those given below.
Pic. 4.3. Graph 1 of tire wear
Lifetime tread height for front wheel drive vehicles with V speed tires.
- P - Height of the tread pattern.
- S - Mileage.
- 1 - Front axle.
- 2 - Rear axle.
Pic. 4.4. Graph 2 of tire wear
Lifetime tread height for vehicles with four-wheel drive and tires with a speed index of V.
- P - Height of the tread pattern.
- S - Mileage.
- 1 - Front axle.
- 2 - Rear axle.
As can be seen from graphs 1 and 2, a tire with a full tread pattern wears more during a given mileage than a tire that is significantly more worn out. After the first 5,000 km, it is not possible to judge the overall life of the tire, as the wear behavior is non-linear.
On front-wheel drive vehicles, the front wheels, in addition to the forces during cornering and acceleration, are forced to withstand most of the lateral and braking forces. Due to such loads, the tires on the front wheels of front-wheel drive vehicles wear out much faster than those on the rear wheels. Uniform wear of all tires is achieved by regularly changing the front and rear wheels.
Prescribed serial air pressure depending on the degree of loading with cold tires
| Air pressure (bar) | Air pressure (%) | Walkability (%) |
| 2,3 | 100 | 100 |
| 1,9 | 80 | 85 |
| 1,4 | 60 | 60 |
| 1,0 | 40 | 25 |
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