Camber-convergence is done today at any service station. There is special equipment for this. Usually the process does not take much time and is carried out electronically. The service itself is inexpensive, so many motorists do not even know how to perform this procedure with their own hands. Nevertheless, there is nothing complicated here, however, accuracy is important. Only a properly adjusted wheelbase will be the key to success.
What is the risk of an unadjusted wheelbase?
It is necessary to understand that the wheel alignment of a VAZ, Nissan, BMW and a car of any other brand is performed in almost the same way. If this procedure is not periodically carried out, then trouble may happen. First, the vehicle starts to drive sideways, which is no longer good. Secondly, tire wear increases significantly. Depending on how much the toe or camber is knocked down, the outer side of the tire will be erased, then the inner one. And in general, an unadjusted wheelbase leads to the fact that confidence in driving is lost, and dynamic readings are significantly reduced, while fuel consumption increases. Nevertheless, if you come to the service station after every 5-10 thousand kilometers, then all this can be avoided. But if there is still no car service nearby, but the work needs to be done, then you can do it on your own.
Basic concepts and terms
Camber is the angle of inclination between the plane of rotation of the wheel and its vertical. In this case, the collapse is positive and negative. The first type is characterized by the fact that the top of the wheel is directed outward. The second, on the contrary, is due to the fact that the wheel is slightly inclined inside the vehicle.
Toe-in is the angle between the plane of rotation of the wheel and the direction of travel. It is usually specified in millimeters, but some equipment calculates in degrees / minutes. It also introduces a definition such as the lateral tilt angle. This is the angle between the projection of the pivot axis and the transverse plane of the wheel.
The angle of inclination of the king pin, the so-called castr, is responsible for stabilizing the wheels while driving. Therefore, experts recommend performing wheel alignment every 5-10 thousand kilometers. But there are unplanned cases when the wheelbase needs to be adjusted urgently, for example, if there is deformation of the wheel disc due to mechanical damage.
Camber-convergence: price and something else
As noted above, at present, almost at every service station, wheelbase adjustments are made. For this, there are special stands where the work is done. As for the cost of services, it starts at 400 rubles. Moreover, today the computer debugging of the camber-convergence is very popular. The key feature of this method is the high accuracy of the angle adjustment. True, the cost of a computer method usually starts from 500-600 rubles, but it's worth it. For example, checking and adjusting one axle of a car will cost about 400 rubles. Two axles - 800 rubles. If you need to check and adjust commercial vehicles, then 800 rubles will have to be paid for one axle, and a thousand for two. In principle, these are the approximate prices for wheel alignment. The price may differ depending on the selected service. Terms of work - from half an hour to an hour. It depends on the complexity and some other factors. 
What do you need to get started?
You must understand the seriousness of the procedure being performed and take it as responsibly as possible. You need this first. Not much is required to adjust the tilt angles. First, the car must be placed in the inspection pit. Second, get a plumb line and a small piece of chalk. It is also advisable to have with you an ordinary measuring ruler and a set of tools for the vehicle (keys, screwdrivers, etc.).
After that, try to stand on the viewing hole so that the wheels look as straight as possible. Mark the bottom and top with chalk. Then use a plumb line. It is applied to the wing of the vehicle, and then the distance between the cord and the rim is measured near the marks. The permissible difference is 3 mm. 
Self-adjustment. We will debug the camber-convergence in our garage
After carrying out the above steps, you need to turn the steering wheel and ride the vehicle a little. In this case, the marks should rotate 90 degrees. It is advisable to repeat the procedure again and record the results. This is necessary for the so-called purity of measurements. The fact is that neither the surface, nor the wing, or the wheel are perfectly flat, and in our case, we must try to reduce the error to a minimum. After that, the wheel is removed and the steering knuckle with a shock absorber is loosened.
The steering knuckle must be moved inward or outward, depending on the direction obtained from the measurements. After that, the wheel and bracket are fixed. In principle, after completing such a simple procedure, we had to achieve the correct camber angle. But it is worth remembering that there are permissible errors. For rear-wheel drive cars it is + 1 / + 3 mm, and for front-wheel drive cars -1 / + 1 mm. 
How to set toe
After the camber angle has been adjusted, it is necessary to tackle the toe-in. In this case, be sure to park the car on a flat surface and turn the wheels to the "straight ahead" position. Dot marks are made on the inside of the tire. They must be placed close to the disc. By the way, you will need a telescopic ruler to complete the work - this will be your most important piece of equipment. Toe-out is impossible without such a device.
The ends of the ruler are set to the marks and fixed. However, it should not touch the body parts. Next, you need to combine the mark "0" and the fixed scale on the ruler. Move the vehicle forward a little, so that the ruler moves, but at the same time does not touch anything. Next, you need to check the readings. If the distance between the wheels is reduced, then the steering rods must be somewhat shortened, and vice versa. Adjustment of the length of the rods is carried out using a clutch.
Conclusion
So we, in principle, figured out how to adjust the wheel alignment of the VAZ. You can carry out work with your own hands on vehicles of other brands. But on foreign cars, the accuracy should be higher, and errors are practically unacceptable. At the same time, foreign-made machines undergo such adjustments less often than domestic ones. But bad roads sooner or later make themselves felt. In principle, there is nothing difficult, but it will take a little time and ingenuity. If there is no desire to do such a thing, then go to the service station and spend 500 rubles on wheel alignment. Given the low frequency of such adjustments, this is not so much.
