When mounting arrow-shaped tires, the specified direction of rotation must be observed. Pay attention to the markings on tires that have a specific mounting position: follow the outer/inner side marking on the sidewall of the tire.
Centering of disc wheels on the front axle wheel hub is done by installing them on the center hole or on the wheel screws. To protect against deep corrosion, a little plastic bearing grease should be applied to the centering seat on the wheel hub each time you install them.
The torque of the wheel screws is 110 Nm.
Note: Before installing a "dry" screw, the conical surfaces are lubricated with plastic grease for rolling bearings.
The use of protective discs or brake dust discs for the Adam Opel AG disc brake is prohibited for safety reasons. When installing these discs, it is impossible to achieve a reliable wheel attachment. The transfer of disc imbalance to the wheel has a negative effect on the dynamic qualities. There is a risk of overheating the brake system. If such discs are installed on the car, you should be aware of the existing risk.
[Material copied from this website: www.opelbook.ru]
Recommended tire pressure data for summer and winter tires is located on the inside of the fuel filler flap or on the left-hand center pillar of the vehicle (the middle right pillar of the body in right-hand drive vehicles), as well as in the operating manual. When changing the tire size, a corresponding label with information on the air pressure in the tires must be attached to the inside of the filler flap; labels are available at service stations.
The use of anti-skid chains is permitted only on the drive wheels (front axle). It should be taken into account that only small chains can be used, which do not protrude more than 15 mm on the inside and on the tread of the tire (including chain lock).
When changing tires, you must ensure that only tire sizes approved by the vehicle manufacturer are installed. The rules established by the law of the given country must also be followed! They contain all mandatory specifications and sizes of equipment, such as speedometer connections, wheel arch extensions, rim size, etc.
The requirements of the competent authority shall regulate the combination of tyre size and the corresponding speedometer (number of revolutions per 1 m of travel). The corresponding operating permit divides the tires into groups. It follows that only tires of the appropriate size, i.e. of one group, determined by the speedometer characteristics, can be installed on the car. It does not matter what speed marking they have (S, T or H) and are these winter tires or summer tires.
All tire sizes specified in the documents supplied with the vehicle can also be installed in the winter modification (high-grip tires, tires for driving on muddy and snowy roads), unless otherwise provided.
Warning: If the maximum speed of the vehicle is higher than the maximum speed of the winter tires, the permissible speed of the tires for driving on muddy and snowy roads should be indicated by a symbol in the driver's field of vision. It is recommended to install winter tires on all 4 wheels.
Winter tires (tires for driving on dirty and snowy roads) have a speed limit, the permissible maximum speed is determined by the markings on the tires used.
If the installed wheel rims are not designed for mounting winter tires, when using flat caps, it is necessary to ensure that the long valves of the tires are inserted. Also, the air vents of these caps must ensure cooling of the brake system.
To compensate for the structural conditional mass fluctuation on the vehicle tires and wheel rims, the installed wheels must be balanced. Imbalance leads to a violation of the concentric rotation of the wheel and a violation of the steering control, as a result of which the clamping of the wheel bearings, parts of the steering gear and tires increases. First, before installing the wheels on the vehicle, balancing is performed on a stationary balancing device. After installation on the vehicle, residual imbalance may be detected, which usually occurs due to unbalanced rotating parts of the vehicle (wheel hub, brake drum or brake disc)To compensate for this residual imbalance, the wheels can be balanced with a mobile balancing device (final balancer or fine balancing machine).
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