2. Tire treads with normal pressure on balanced and correctly installed wheels, as well as on serviceable shock absorbers, wear evenly. In general, it is difficult to assess the durability of tires from different manufacturers, since it depends on many factors, and above all, on the type of surface on which the car is operated, on tire pressure, on driving style and climatic conditions. A sporty driving style with high accelerations and hard braking will shorten the life of the tyres.
Attention: The minimum thread height of the protector on the entire surface is 1.6 mm. However, for safe driving, it is recommended to change the tire if the depth of the grooves on the tread surface decreases to 3 mm. Tire manufacturers are increasingly placing 1.6 mm high tire wear indicators on the tread. The appearance of transverse continuous stripes on the tread surface indicates its complete wear and the need for replacement. Tires with the designation M+S retain the necessary grip on snowy surfaces and during snow and rain, when their profile threads have at least 4 mm depth. It is necessary to check whether there are any cuts or cracks on the surface of the tire. Using a small screwdriver, it is necessary to determine the depth of the observed cracks. If the cut reaches the tire sheath, water entering there will quickly corrode the steel wire of the sheath and separate the tread from the sheath. Such a tire threatens at any time with a sudden loss of pressure, therefore, for safety reasons, a tire with a deep notch must be replaced.
3. Valve check:
A) Unscrew the protective cap of the valve.
b) Apply some saliva to the valve outlet. If a bubble forms at the outlet, then it is necessary to press the return valve with the back of the cap.
V) Check valve again. If air bubbles still form at the outlet, the non-return valve must be replaced.
G) You need to re-tighten the protective cap.
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