Tires of balanced wheels, with conscientious observance of the prescribed tire pressure, with correct installation of the wheels and operation of the shock absorber, wear out over the entire working surface approximately evenly. In case of uneven wear, see the tire fault diagnostics in the section "Wheels and tires". Otherwise, it is generally impossible to draw conclusions about the resource of tires of a certain manufacturer, since this resource is influenced by various factors:
- quality of road surface
- tire inflation pressure
- driving style
- weather conditions
First of all, sporty driving style, quick starting and sharp braking contribute to rapid wear of tires.
Note: In fairness, it should be said that the tread pattern height can decrease to 1.6 mm when worn, namely, the depth of the tread pattern grooves over the entire working surface should still be at least 1.6 mm. However, for safety reasons, it is recommended to replace tires when the tread pattern height is at least 2 mm.
If the tread depth is approaching the minimum permissible value, and the prescribed wear value of 1.6 mm is exceeded in many places around the perimeter of the tyres and the pattern is no longer present, this means that such tyres must be replaced.
Note: On all-wheel drive (quattro) vehicles, tires from the same manufacturer and with the same tread pattern must be installed on all 4 wheels. Otherwise, the center differential may be damaged. For safety reasons, this requirement is also recommended for vehicles with front-wheel drive.
Please note: Tyres with a winter tread pattern marked M+S have sufficient impact on mud and snow only if the tread depth is at least 4 mm.
Caution: Check the tires for cuts. If cuts are found, determine their depth using a small screwdriver. If the cut depth reaches the carcass, the steel cord of the tire is corroded due to water penetration. Under such circumstances, the working surface separates from the carcass, and the tire begins to crack. Therefore, if the tread is deeply cut, the tires should be replaced for safety reasons.
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