Outer sides (forward tyres) are worn out: hard turn. Check up a convergence of wheels. Turn tyres on disks or change them for the back.

Protector outer sides are worn out more than the middle: - too small pressure in tyres.

Oblique profile: wrong corners of installation of wheels — mainly occurs, when one wheel has unilateral deterioration.

The protector middle is worn out more strongly, than outer sides: happens at frequent trips on high speeds. Tyres are stretched under the influence of centrifugal forces and consequently wear out in the middle, than along the edges more strongly. Especially distinctly it can be noticed on an example of back wheels.

Strong deterioration on both parties (it is distributed on all circle): presence of a disbalance of wheels.

Fig. 331. Deterioration of a protector owing to wheel blocking at braking

Fig. 332. The static disbalance is found out already at free rotation of the hung out wheel. The centre of gravity below (). The dynamic disbalance starts to be felt at high speeds. The wheel starts to vibrate ()

Surfaces are worn strongly out on the one hand: wear tracks owing to wheel blocking. Often appears at blocking of brakes on cars without ABS (fig. 331 and 332).

You distinguish unbalanced wheels after vibration of a steering wheel or frequent oscillative motions of a forward part of the car. Address as soon as possible in the service centre and отбалансируйте wheels.