Tire air pressure
The weight of the vehicle flattens the tire on the area of its contact with the road. The rolling of the tire leads to forced deformation of the tread and the entire breaker. With insufficient pressure, the forced deformation increases, as a result of which the temperature and rolling resistance increase. These factors lead to increased wear and negatively affect traffic safety.
Table 4.2. 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 |
Excessive air pressure in the tire leads to increased wear of the middle part of the tread and worsens comfort. It is recommended to always maintain the air pressure in the tires specified by the manufacturer.
NOTE: The graphs provided do not cover the entire product range. They are intended to show the wear of tyres on the front and rear axles, as well as the wear of tyres on vehicles with front and all-wheel drive.
NOTE: Depending on operating conditions and undercarriage, achievable tire life may vary greatly from those listed below.
Tread depth over service life for front-wheel drive vehicles with V-speed rating tyres.
P - Tread pattern height.
S - Mileage.
1 - Front axle.
2 - Rear axle.
Tread depth over the life of a 4WD vehicle fitted with V-speed rated tyres.
P - Tread pattern height.
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 out more during a given mileage than a significantly more worn tire. After the first 5,000 km, it is impossible to judge the overall service life of the tire, since the wear characteristic is non-linear.
On front-wheel drive vehicles, the front wheels, in addition to the forces during turns 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 noticeably faster than those on the rear wheels. Even wear of all tires is achieved by regularly rearranging the front and rear wheels.
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