1. Suspension adjustment refers to the adjustment made to the front and rear wheels so that they are in proper angular relationship with the suspension and the ground. Wheels that are out of proper alignment not only impact steering control but also increase tire wear. The adjustment of the front wheels includes toe-in, caster and camber, while only toe-in is adjusted on the rear wheels.
2. To adjust these parameters, we recommend that you contact the service station, where there is special equipment.
3. The following front wheel adjustment will give you an idea of the purpose of this adjustment.
4. Convergence is the tucking of the front or rear wheels. The purpose of this adjustment is to make the rotation of the front wheels parallel. In a car with zero toe, the distance between the front edges of the wheels will be the same as the distance between the rear edges of the wheels.
5. The exact amount of convergence is usually only a few millimeters. A car with static toe, for example, has a value of 2.5 mm per wheel, would have a front wheel spacing 5 mm less than a rear wheel spacing when the car is stationary. This is because even when the wheels are set to toe when the vehicle is stopped, they will roll parallel when the vehicle is moving.
6. Toe adjustment is made by positioning the end of the connecting rod on the rod itself on the front wheels and the wheel star adjuster on the inner ones. Improper toe will cause the tires to wear unevenly, making them smooth to the road surface. Tools for measuring convergence are available at service stations. When using such a tool, follow the manufacturer's instructions.
7. Pivot - kingpin axis tilt (the point around which the wheels turn when being adjusted) forward or backward as discussed above. Camber - The tilt of the front wheels from their vertical position as viewed from the front of the vehicle. When the kingpin axis is tilted forward, the kingpin pitch is considered to be positive (+). Similarly, when the wheels are tilted outward at the top, the camber is considered positive (+). When the kingpin axis is tilted back, the kingpin tilt is negative (-) and when the wheels are tilted inward at the top, the camber is negative (-). The amount of tilt is measured in degrees from vertical and this measurement is called the caster or camber angle of the front wheels. A positive caster allows the car to easily drive in a straight line on the track, while a negative caster makes the ride less stable. The camber angle of the front wheels affects the tread area of the tire that comes into contact with the road and will compensate for the change in suspension geometry when the car is cornering or riding on undulating surfaces.