In our daily life of using and maintaining cars，“Four-wheel alignment” can be said to be a maintenance item that every car owner cannot escape。However，Same as "four-wheel alignment"，There is a big gap between prices and levels on the market！

Seabet: It takes less than 10 minutes to finish, If the time is long, it may take 2 or 3 hours;

Price: Down to 50 yuan, 100 yuan, up to 1 000 or even 2 000 yuan is all it，The price difference is surprising，At the same time, it also makes it difficult for the majority of car enthusiasts to believe！

Don’t worry，Today I will talk about it，Something about "four-wheel alignment"，Something about "four-wheel alignment"！

    Four-wheel alignment is based on the original chassis parameters of the vehicle，Adjust the suspension positioning angle，To restore vehicle stability、The purpose of steering and grip。
    Why use the word "recovery"？Because the ultimate goal of four-wheel alignment is not to make your car have better chassis performance than before，But let the chassis return to the factory state as much as possible，This is the meaning of "four-wheel alignment"。The adjusted suspension positioning angle is mainly: camber angle、Caster angle、Toe Seabetangle、Kingpin inclination angle。

    Generally，The vehicle suffered serious tire damage，Before and after、Uneven wear on the left and right tires，Direction deviation、The body is unstable，The body is unstable、When the tires jump, there may be something wrong with the suspension，At this time it is very necessary to do a four-wheel alignment。

     Of course，If your car has none of the above problems，You didn’t feel anything strange about the chassis，It doesn’t make much sense to do a four-wheel alignment。

Large differences are more difficult to adjust than small differences: the larger the difference between the left and right wheels，Indicates that the greater the deviation，The greater the adjustment workload，And some positioning angles cannot be adjusted if the difference is too large，You can only choose to replace the suspension。

The camber angle is "difficult to adjust" than the toe angle: the toe angle is the easiest to adjust，Especially the front wheels，It’s just a matter of twisting the tie rod a few times。The adjustment of camber angle is different，The camber angle of the front independent suspension requires adjusting the position of the steering ball head，The rear non-independent suspension needs to be replaced with gasket adjustment，If the deviation is too large, it cannot be adjusted，Can only be replaced。

The rear suspension is "more difficult to adjust" than the front suspension: this mainly depends on the suspension type，The more advanced the suspension is, the better it is in tune，The adjustable space is also larger，And the rear suspension is because there are many "non-independent suspensions"，They are almost impossible to adjust，If the difference is too large, it can only be replaced，That’s why it’s more “difficult to adjust”。

    Four-wheel alignment is a rigorous matter，Precision work，Such a slight adjustment deviation will have a completely different effect，When doing four-wheel alignment on the vehicle，The car needs to be in an unloaded state，And some street shops don’t care whether they are empty or not，Put two bags of rice in the trunk and they will do a "four-wheel alignment" for you，No matter how you measure it, it will definitely be inaccurate，The adjusted data they give you is even more inaccurate，Unreliable four-wheel alignment，It’s better not to do it！！
A four-wheel alignment is required when the vehicle has the following problems:

1. The vehicle deviated

We all know that the steering wheel has an automatic return function，In fact, this is due to accurate four-wheel alignment。If one day you find that the car will veer to the left or right involuntarily，You have to keep straightening the steering wheel to keep driving in a straight line。At this time, you need to do a four-wheel alignment。

2. Severe tire wear

Generally we don’t check tires when driving，Then it is also recommended that you check the tire condition once every 20,000 kilometers or one year，Check if there is any eccentric wear。If you find the tire eating phenomenon that we often call, you need to do a four-wheel alignment。

3. After a vehicle accident

When the car was hit，If the suspension is damaged，It is also necessary to re-adjust the four-wheel parameters。Also，The steering wheel floats while driving、Shaking or being overweight may also be caused by inaccurate four-wheel alignment parameters。

Finally，You must find a professional repair shop to do four-wheel alignment，Avoid the parameter adjustment becoming more chaotic due to unprofessional maintenance technicians，It may also damage the car。Also，You should also pay attention to your Seabetusual car habits，Bad driving habits are likely to make you a "frequent user" of four-wheel alignment。(The content of the article comes from the Internet，If copyright is involved, please contact us to delete)