When exactly should wheel alignment be done? What are the judging criteria?

Only by knowing oneself and knowing one's opponent can we "win".

Many friends who don't know why will think that the four-wheel alignment will be related to the wheels, so the statement of doing four-wheel alignment after changing tires seems to make some sense. It is said that it is four-wheel alignment, in fact, it has little to do with the wheel, and if there is one, it can only be counted as a "victim", so there is no direct connection between tire change and four-wheel alignment, unless it is a tire replacement caused by abnormal wear.

Four-wheel alignment is through the adjustment of the suspension, so that some angles (kingpin camber, kingpin camber, front wheel camber, front wheel toe) are within the standard range, so that the suspension of the vehicle to maintain the correct geometric angle, in essence, the four-wheel alignment is to ensure the maintenance of the vehicle's straight-line driving ability. <>

Why is location data inaccurate? After a long period of use of the vehicle, due to the aging of the suspension parts, the loosening of the screws, and the rapid passage of speed bumps or potholes, it will lead to the change of the fixed position of each arm, resulting in the inclination angle exceeding the standard range, and the suspension of the vehicle is not as "strong" as imagined. In the extreme environment of vigorous driving, an inadvertent support may bend the positioning rod, the annoying thing is that this small deformation is not visible to the naked eye, and can only be detected when this data deviation shows a fault phenomenon in the driving feeling or in the inspection of tire wear items.

When should you do wheel alignment?

Many parts on the vehicle have a replacement cycle, so some friends will ask, how often should the wheel alignment be done? I'm sorry to disappoint you, there is no maintenance cycle for four-wheel alignment, because the use of each car is different, and the degree of component wear and tear cannot be generalized, and it can only be judged according to the situation whether it is time to do positioning. <>

There are many specific situations, the first situation is that although there is no feeling of pulling hands, but when the steering wheel is aligned, the vehicle is offset, and if you want to keep the vehicle in a straight line, you need to make the steering wheel offset a little in a certain direction. The second scenario is that the vehicle does not feel the deviation of the vehicle, which means that the vehicle will still drive in a straight line when the steering wheel is released, and will only be noticed if the tires are abnormally worn during maintenance (as mentioned earlier). The third situation is that the steering wheel of the vehicle obviously has the feeling of pulling the hand to a certain side, and when the steering wheel is released, the vehicle will deviate in that direction.

The occurrence of the above three situations indicates that the positioning angle needs to be adjusted by doing four-wheel alignment. <>

1.The vehicle has mistracked.

The steering wheel has an automatic centering function, which is actually due to the accurate four-wheel alignment. If one day you find that the car will involuntarily deviate to the left or right, and you have to keep aligning the steering wheel to keep driving in a straight line, then you need to do a wheel alignment.

2.Tires are severely eccentric.

We usually don't check the tires carefully when driving, but we recommend that every 20,000 kilometers or 1 year carefully check the tire condition to see if there is eccentricity.

3.After an accident with a vehicle.

After the car is hit, if the suspension is damaged, the four-wheel parameters also need to be readjusted. In addition, the steering wheel fluttering, shaking or excessive weight during driving can also be caused by inaccurate wheel alignment parameters.

Wheel alignment is a means of repair, not a maintenance item, and does not need to be done at fixed time. Four-wheel alignment only needs to be done in a certain situation, such as the vehicle deviates when driving, the vehicle may need to do four-wheel alignment. When the vehicle is damaged or the tires are replaced, it is necessary to do four-wheel alignment.

Don't do the four-wheel alignment casually, if it is not done accurately, it will have a certain impact on the vehicle, and it may lead to accidents in serious cases.

Does the four-wheel alignment have to be the original data?Wheel alignment doesn't necessarily require factory data. The four-wheel alignment is mainly based on the four-wheel parameters of the vehicle, and then adjusts it to keep the car stable and straight, and the steering is light, and reduces the wear and tear of the tires and steering parts of the car while driving. However, it is best to have the original data when the vehicle is aligned with the four wheels, after all, there will be errors when installing the positioning holes, and if these errors are large, it may lead to inaccurate four-wheel alignment.

The cost of vehicle four-wheel alignment is different in each region, mainly according to the quality of four-wheel alignment, some repair shops do four-wheel alignment, but the quality is not very good, the owner must not be greedy when doing four-wheel alignment. Generally speaking, the ** of ordinary cars in the maintenance shop is about 200 yuan and 400 yuan, and if it is done in the 4S shop for four-wheel alignment, it may take about 1000 yuan, but the quality will be much better.

What are the benefits of car doing wheel alignment:

1. Tires benefit greatly.

Since it is called four-wheel alignment, it must be very beneficial to the tires in the first place. After the four-wheel alignment, the tires can maintain the optimal angle between the tire and the car body, which improves the grip and ensures comfort. Of course, if the vehicle does not carry out four-wheel alignment in the event of an abnormal phenomenon, it will not only have a greater impact on safety, but also greatly reduce the life of the tire.

2. Improve controllability.

Keeping the tires in normal condition is of course very helpful for driving safety. After the four-wheel alignment adjustment, the driving handling can be guaranteed accordingly. Especially in case of emergency, the tires have enough grip to follow the driver's trajectory as much as possible.

Although this is only an emergency, there are certain dangers in driving, and if you can make a corresponding judgment at the moment when danger is imminent, I believe that your safety will be fully guaranteed.

3. Good fuel saving effect.

It is obvious that fuel consumption decreases with the decreasing coefficient of rolling friction of the tire. After the adjustment of the four-wheel alignment, the vehicle can follow the correct trajectory, which reduces the wind resistance to a certain extent, and of course, the fuel consumption will also be reduced. Combined with the standard tire pressure value, the tires not only maintain the best grip on the road, but also reduce the friction between the tires and the ground as much as possible, killing two birds with one stone.

4. Driving safety***.

If the tires are good, the safety will be greatly improved. In fact, after the four-wheel alignment adjustment, the maintenance technician will also check the condition of the suspension system and other components of the car, and this inspection can determine whether the tires have an adverse effect on the chassis system. If an abnormality is found, not only the tires are optimized, but the chassis is also trimmed accordingly, so that the wear degree of the corresponding components can be judged through the tires, and the potential safety hazards can be found as soon as possible and completely eliminated.

<> "Four-wheel alignment, under what circumstances do you need to do it?"

Four-wheel alignment is an important item in automobile maintenance. Although many people may choose to ignore this item when doing maintenance, it is still very helpful to ensure the safety of the car and enhance the comfort of driving.

In the car manufacturing process, the four tires of the car, the steering mechanism, and the front and rear axle devices are installed according to the data of specific specifications. However, due to the long-term use of the car, the state of these devices has deviated from the specified value range.

Moreover, the performance of the car will also be reduced due to serious tire wear, excessive consumption of parts, increased fuel consumption, etc.

In addition, long-term use will also reduce the stability of the car, which is manifested in the feeling of lightness and heaviness of the steering wheel when driving. Therefore, in order to ensure the good performance of the car and the safety of driving, it is necessary to do four-wheel alignment. On the one hand, it is to ensure the normal operation of the car, and on the other hand, it is also to prolong the life of the car.

The long-term use of the car will definitely increase the wear and tear, but in addition to normal use, there are some bad driving habits that will also cause the car to need to do four-wheel alignment.

1. Car modification.

Many people like to modify cars, light only change the appearance, headlights and color matching, etc., heavy bright potato Jane will also modify the chassis and suspension of the car.

If you go to an irregular auto parts city for modification, it is likely that the assembly of the car is not in place, resulting in wrong parameters. So, try not to modify your car's hardware. If you insist on modification, it is best to go to a regular auto parts city or the original factory to buy.

Second, the parking is not standardized.

Some car owners don't pay attention to the road conditions at all when they stop their trousers, and park their cars in place at random on some road teeth or uneven sandy ground. This will lead to uneven force on the car, which will lead to a top-heavy state, which will again accelerate the wear and tear of the car.

The four-wheel alignment adjustment is mainly the inclination value and toe-in value of the wheel, and the inclination value is to ensure that the car can drive as horizontally as possible; The toe value is related to whether the steering wheel can automatically return to the center.

Regarding the maintenance of the car's four-wheel alignment, generally speaking, it is not necessary to do it often. However, if you have suddenly taken a long journey, especially in places like mountain roads and sandy areas, and you can feel that there is a problem with the steering wheel on a normal day, you should go for a check-up.

Four-wheel alignment is standard according to the following method:

1. When the car is aligned with four wheels, you need to park the car in the appropriate card slot, so you must control the speed, listen to the guidance of the maintenance master, and tighten the handbrake and hang up the gear after parking the car;

2. When the car is aligned with four wheels, it is necessary to take care of the operation of the maintenance workers and do not let them damage the tires, because some hand-born repairmen are easy to prick the wrong position, and it will be troublesome to hurt the tires, so you should point it out in time;

3. When the car is aligned with four wheels, it is necessary to shake the tires by hand to check the chassis parts, check whether the steering rod, ball joint, swing arm, bearing, etc. are loose, and pay attention to the selection of model information, which is used as the basis for measuring whether the chassis data of the car is correct or not, so the choice of the model can not be wrong. After finding the corresponding model year, the effect is good.

Under normal circumstances, the four-wheel alignment of the car can be done once a year every 10,000 kilometers or the nuclear base let.

Of course, depending on the specific situation, if you don't drive often, it's okay to do four-wheel alignment at a long interval, but if you are a frequent car such as a taxi, it's best to do four-wheel alignment every six months.

Generally speaking, it is enough to determine how often the wheel alignment is based on the frequency of use of the vehicle, but after the vehicle has changed the steering system, suspension system or tripod configuration, it is still necessary to do the wheel alignment, and in addition, it is best to do it after the vehicle has undergone collision repair.

Four-wheel alignment is based on the vehicle's four-wheel parameters, which are adjusted to ensure good driving performance and certain reliability.

Notes:

The installation between the steering wheel, the steering knuckle and the front axle of the car has a certain relative position, and the installation with a certain relative position of the change is called steering wheel alignment, also known as front wheel alignment. The front wheel alignment includes four contents: kingpin camber (angle), kingpin camber (angle), front wheel camber (angle) and front wheel toe.

This is the relative position of the two steering front wheels and the rear axle for the two rear wheels, which is called rear wheel alignment. Rear wheel alignment includes wheel camber (angle) and rear-wheel toe-in by rear. In this way, the front wheel alignment and the rear wheel alignment are called four-wheel fixed forward bright position.

If the direction is deviated, you need to do a four-wheel alignment.