Uneven tread wear is most often caused by under- or over-inflated tires, but can also be caused by improper wheel alignment, imbalance, faulty shock absorbers, or a warped wheel rim.
Saw-tooth tread wear is usually a result of vehicle overload.
First of all, keep an eye on your tire pressure. Check your tire pressure at least once a month.
Check the pressure only when the tires are cold. The pressure in the tires increases with the temperature. Therefore, it is absolutely wrong to reduce the pressure in a hot tire. If the tire pressure is too high, the middle of the tread wears more, because the tire becomes more convex under the influence of air pressure.
If the air pressure in the tire is too low, the edges of the tread will wear out more because they bear more load.
Incorrect wheel installation and imbalance lead in each case to a specific typical pattern of tread wear, some of which are shown in the table "Diagnosis of tire faults".