Wheel and tire sizes Opel Vectra/Calibra cars, depending on the model and configuration, can be equipped with various rims and tires. Discs have a pressing depth of 49 mm (pressing...
Designation of rims Example: 5 1/2 Jx14 H2 5 1/2 - rim width in inches J - designation of the profile and height of the rim x - designation of a monolithic deep rim 14 - rim...
Tire designation Example: 195 - width in mm /70 - ratio of height to width (the cross-sectional height of a tire is 70% of its width) In the absence of data on this relation in...
Tire manufacturing date The date of manufacture of the tire is indicated in the manufacturer's code. Example: DOT CU L2 UM8 119 TUBELESS DOT - Department of Transport CU -...
Wheel replacement When changing wheels, the direction of rotation of the tires must not be changed, since they only adapt to such a change after significant initial wear. If the...
Tire break-in New tires have a smooth surface. That's why tires need to be broken in (this also applies to the spare wheel). The initial break-in wear makes the tire...
Wheel balancing The wheels of a new car are balanced at the factory. Balancing is carried out to compensate for the uneven distribution of tire material. When driving, the...
Anti-skid chains Snow chains may only be fitted to the front wheels (including all-wheel drive vehicles). Remove wheel covers before installing chains. Vehicle speed with snow...
Abnormal tire wear For the front wheels, a slightly higher wear on the edges of the tires in relation to wear in the middle is considered normal, and due to the transverse...
Elimination of steering vibrations Increased steering vibration in a certain speed range is usually due to wheel imbalance. Basic Checks Check and, if necessary, correct the tire pressure. Carry...
Installing wheels on a car With the vehicle raised, position the wheels so that the areas of greatest radial play are on top. In this position, tighten the wheel bolts crosswise to 110...
Wheel balancing on a car When balancing the drive wheels, install them on rollers (treadmill). To ensure synchronous rotation of the wheels, they must be driven from the vehicle...
Spare wheel Opel Vectra/Calibra all-wheel drive vehicles use a smaller spare wheel than the other wheels to save space. When handling the spare wheel, keep the following...
Tire pressure check Check pressure only when tires are cold. The pressure should be checked once a month and as part of maintenance. In addition, you should check the pressure...
Tire Profile Check Tires on balanced wheels, when properly inflated, properly aligned, and properly damped, will wear approximately evenly across the entire running surface. It...
Tire valve check Unscrew the cap from the valve. Apply some soapy water to the valve. If air bubbles form, tighten the valve with the back of the cap. Attention! Use only the...