Caution: Never fit tires of different designs together, such as a steel cord radial tire with a bradial beveled tire, etc. Simultaneous use of different types of tires will adversely affect the directional stability of the vehicle, may lead to loss of control over vehicle control and injury to passengers.
Knowing what is meant by a particular tire designation will make it easier for you to select the type of tire you need. Radial tires have the following designations:
The letter speed code indicates the maximum allowable speed (for summer tires):
- S - up to 180 km/h
- T - up to 190 km / h
- H - up to 210 km/h
- V - up to 240 km/h
- Z - over 240 km/h
On tires "Z" next to the letter speed code is the letter designation of the type of tire "R".
Attention: Never drive the vehicle at a speed that exceeds the maximum speed limit for the tires fitted to it.
Exceeding the maximum allowable speed will cause tire damage, and this, in turn, will lead to loss of control of the vehicle and injury to passengers.
Never exceed the permitted speed limits and prepare your vehicle for real road conditions.
The date of manufacture of the tire is also printed on its wall (or only on the inner surface of the wheel):...121... - means that the tire was manufactured in week 12, 1991.
The strength and performance of tires deteriorate over time, even if they have not been in use. Direct tire manufacturers warn that tires manufactured more than six years ago are not guaranteed to be reliable in normal use.
Caution: Old tires can fail while driving, resulting in loss of vehicle control and personal injury.
Replace your tires every six years, regardless of how much tread wear. If, under emergency circumstances, you are forced to use old tires, you must drive the car with the utmost care at reduced speeds.
Tread wear
The degree of tread wear is a relative indicator based on the intensity of tire wear. For example, a tire labeled 150 will be 1.5 times more wear resistant than a tire labeled 100. Anyway, the relative performance of tires depends on the actual conditions of use and can deviate significantly depending on the driving style of the driver, compliance with the maintenance schedule, road and climatic conditions.
The grip strength of tires with the road - A, B, C
There are three degrees of adhesion - A, B, C (in descending order), which characterize the tire's ability to brake on wet pavement based on measurements taken at a state testing station with asphalt or concrete pavement.
A tire marked C has the weakest grip on the road surface. The degree of adhesion is determined by the results of the test when braking a car moving straight ahead.
Temperature levels A, B, C
Temperature levels A (highest), B and C determine the resistance of the tire to heat generation. With constant heating of the tire to high temperatures, its service life is reduced and conditions are created for its sudden failure. The temperature level corresponds to the operation of a vehicle that meets Federal Safety Standard No. 109 for mobile vehicles. Levels B and A correspond to higher gradations than the minimum established by law.
Attention: The temperature levels are set for these tires. which are inflated under the necessary pressure and are not subjected to overloads. Exceeding the set speed parameters, insufficient pressure or overload (one wheel or more) tires can cause them to overheat and fail, which in turn will lead to loss of vehicle control and injury to passengers.
If you intend to fit tires of a different type to your vehicle than those fitted at the factory, please pay attention to the following:
- For technical reasons it is not possible to use wheels from other vehicles in every case - under certain circumstances the wheels may not be the same even for vehicles of the same model.
- Wheel rims and mounting bolts are matched to all types of Volkswagen vehicles.
- When installing different types of wheels (e.g. wheels with tires for winter use) it is necessary to use bolts of the appropriate conical shape and length, since the reliability of the fastening of the wheels and the performance of the brake system depend on this.
- If you plan to replace steel wheels with light alloy wheels or winter tires pre-rimmed, consult your Volkswagen dealer first. It has all the technical information for using wheel rims and mounting bolts compatible with those fitted at the factory.
Attention: The use of tires, wheel rims and fastening bolts that do not meet the technical parameters of the manufacturer's requirements will adversely affect the safety of the vehicle and may lead to an accident and injury to passengers.
If your vehicle is equipped with BBS alloy wheels (unified wheels), then in order to avoid air bleeding, never loosen the bolts securing the two components of the wheel to each other. All this can lead to loss of control of the vehicle and injury to passengers!
When installing trim caps or a front spoiler, make sure that the airflow for cooling the brakes is unobstructed while the vehicle is in motion.
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