On forward wheels slightly bigger wear of a side part of a working surface in relation to the middle is normal, and because of a carriageway inclination wear of the neighbor to the middle of the road of the region of the tire (the left wheel: outer edge, right wheel: the inner edge) is expressed more obviously. Uneven wear of tires first of all is caused by too low or too high pressure in tires and can be caused by mistakes in adjustment of angles of installation of wheels or disbalance, and also faulty shock-absorbers or disks.
Sawtooth wear of tires is usually caused by too big load of the car.
First of all it is necessary to watch the ordered pressure in tires, it is necessary to make this check at least time in four weeks. To check pressure only in cold tires. When heating pressure in tires increases at the bystry movement. It is absolutely wrong to reduce pressure in heated tires.
With too high pressure the middle of a working surface wears out more as tires because of high pressure more convex.
With too low pressure side parts of a working surface wear out more, the middle caves in inside more.
The wrong adjustment of angles of installation of wheels and disbalance give a peculiar drawing of wear which it is specified in diagnostics of malfunctions.
