What are the reasons for the deviation of the car?

Deviation refers to the fact that the car is driving in a straight line on a flat road surface, and the vehicle will have a tendency to drive left or right, resulting in the inconsistency between the center line of the front and rear axles and the center line of the driving trajectory. If you feel a noticeable grip on the steering wheel, it is a deviation.

Car tire pressure. When the tire pressure difference between the two tires is large, the vehicle is very prone to mistracking. In fact, this is not difficult to understand, driving on normal roads, when the tire pressure difference between the two sides is large, the area they contact the ground is also different, and the friction of the tire with lower air pressure is greater, so in this case, the vehicle will deviate to the side of the tire with low tire pressure.

Therefore, when you find that the vehicle has a deviation, you can first check whether the tire pressure on both sides is normal.

Brake system. When the braking force on both sides of the wheel is not the same, the vehicle will immediately deviate when braking. Because when the vehicle is braking, the braking strength of the two sides is different, and the braking force of one side of the wheel is greater or less than that of the other side, which will produce a "differential" (the tire rotation speed on both sides is different), and the body will be deflected to the side of the wheel that rotates more slowly.

When the car brakes and finds that the deviation is more serious, you should immediately check the braking system, which is generally due to the problem of the brake pump and the brake pads can not return normally.

Wheel alignment. For vehicles that have been driven for a period of time, changes in wheel alignment data can also lead to mistracking. Especially for vehicles that often walk on potholes, the parameters of four-wheel alignment are more likely to change, so you can go to a regular maintenance shop to do four-wheel alignment.

Note, be sure to go to a regular repair shop to do four-wheel alignment, if the four-wheel alignment is not done well, then the impact on the vehicle is still great.

Body counterweights. This one is the easiest to solve. When there are many objects in the vehicle and the weight on both sides is unbalanced, the vehicle will also deviate.

The main thing here is to pull heavy loads, and pay special attention to the evenly placed goods on the left and right. If heavy objects are often placed on one side, even if there is no misalignment at that time, the uneven placement of the left and right sides may lead to uneven wear and tear of the tire, and over time it will cause misalignment due to the asymmetry of tire friction.

Suspension system. The deformation and looseness of the suspension will also cause the vehicle to deviate. This may be due to wear and tear and aging caused by daily driving, if there is a change in components such as the lower swing arm or the clearance is too large, adjusting or replacing the parts can be solved.

Body frame. The frame mistracks after a severe impact, which is a problem. Because of the deviation caused by the deformation of the car body and the damage to the frame caused by the accident, it is necessary to replace the parts in a large area and even to correct the frame before it can be fully recovered.

Summary: To put it simply, when the vehicle deviates, we can check the tires, brakes, counterweight, suspension, etc., and learn more about the state of the car, so as to maintain our own car.

The wheels should be aligned with four wheels.

There are many reasons why a car mistracks, and here are a few examples.

1. Tire problems (1) The tire pressure on both sides is not high, and it will deviate to the side of the tire with low tire pressure.

2) The depth of the pattern on both sides of the front wheel is different, so it will also run to the shallow side of the pattern.

Second, the suspension part (1) the shock absorber has the oil leakage, causes the shock absorption to be lower than the normal side under the effect of the vehicle's own pressure, causes the body height to be lower than the normal side, and the vehicle center of gravity shifts to the side of the body low, causes the shock absorption side of the oil leakage to deviate.

3. Positioning data (1) The positioning data is incorrect, which also leads to deviation, and the side of the vehicle with a large camber angle is deviated.

2) The vehicle runs to the side with a small backward angle.

3) vehicle walks along the thrust line direction, and the thrust line and the geometric axis do not coincide, so that the vehicle may deviate to the corresponding thrust line declination direction.

Fourth, road surface reasons. Due to the design of road drainage, some road surfaces are high in the middle and low on both sides, and we are driving on the right side, so our vehicle may receive the influence of this design and deviate to the right.

Therefore, the reason for deviation is a comprehensive reason, and the main factors of deviation should be comprehensively analyzed.

1. Without braking, the tire wear is seriously uneven, and the difference is that the larger the diameter difference between the inner and outer tires of the rear wheel, the more serious the irregular braking deviation. Because this diameter difference will lead to the pressure of the wheels on the ground to change at any time with the unevenness of the road surface, the braking torque of the wheels is seriously out of balance when braking, 2, the tires are good to run the deviation, it is necessary to do a four-wheel alignment, I was in this situation before, the four-wheel alignment shop can deal with it.

The reasons for the deviation of the steering wheel of the car: 1. The tire pattern on both sides is not the same or the wear is different, it is best to use the same type of tire for the whole car, at least the two tires of the front axle and the rear axle must be the same, and the depth of the pattern must be the same, and it must be replaced if it exceeds the wear limit; 2. There is a deviation in the tire pressure on both sides, and the inconsistent tire pressure will make the tire become different in size, and it will inevitably deviate when running; 3. The buffers on both sides of the deformation of the spring of the front shock absorber are inconsistent; 4. Poor brake return of a tire will also lead to steering wheel deviation; 5. The overall deformation of the frame, the wheelbase difference on both sides is too large, beyond the maximum allowable range.

One side of the tire pressure is low, the inclination angle is wrong, the chassis is abnormal wear, etc.

All of the above may complete the mistracking. Thank you.

1. The air pressure of the left or right tire is inconsistent;

2. The left and right wheelbases are inconsistent;

3. Deformation of one side of the steel ring;

4. The front wheel alignment is incorrect;

5. The front wheel leans back incorrectly;

6. The two sides of the tire wear are different;

7. The toe is wrong;

8. The friction plate of the wheel of one side of the car is locked (the piston of the sub-cylinder is stuck after braking).

That's the reason why the toe is wrong, just do a four-wheel alignment.

There are many reasons for vehicle deviation: different tire patterns on both sides or different heights from deep to shallow, unequal tire pressure on both sides, inconsistent vertical cushioning on both sides due to deformation of the front shock absorber springs, failure of the front shock absorber or excessive wear of vehicle chassis components, and abnormal clearance.

1.The tire pattern on both sides is different or the depth and height of the pattern are different. It is best to use the same type of tires for the whole car. At least the two tires on the front axle and the rear axle must be the same, and the tread depth must be the same. If the wear limit is exceeded, it must be replaced.

2.The tire pressure on both sides is not equal. Unequal tire pressures can cause tires to vary in size, which can inevitably deviate when rolling.

3.The shock absorbers on both sides of the front shock absorber spring deformation are inconsistent. The quality of the shock absorber springs can be judged by the comparison after pressing or dismantling.

4.The front shock absorber failed. After the failure of the front shock absorber, when the vehicle is driving, the two suspensions are unevenly stressed, one high and one low, resulting in deviation.

The absorption of the shock absorber can be detected by a special shock absorber tester, and the quality of the shock absorber can be judged, for example, unconditional disassembly can be judged by pulling.

5.Excessive wear and tear of vehicle chassis parts with abnormal clearances. Steering rod ball joint, rubber sleeve for support arm, rubber sleeve for stabilizer bar, etc. It is a common part with too much clearance and should be carefully inspected by the lifting vehicle.

6.A certain wheel of brake return is poor, and the separation is incomplete. This is equivalent to the fact that partial braking is always applied on one side of the wheel, and the vehicle will inevitably deviate while driving.

When inspected, the temperature of the hub can be felt. If one wheel is super fast and more than other wheels, it means that the brake return of this wheel is poor.

7.The overall deformation of the frame. If the wheelbase difference between the two sides is too large and exceeds the maximum allowable range, it can be measured with a tape measure. If it is out of range, it must be corrected by means of a calibration table.

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The reasons for the deviation of the vehicle during driving: 1. The road conditions are uneven, and the flat ordinary highway design is high in the middle and low on both sides; 2. The tire pressure is inconsistent, and the tire pressure on both sides is unbalanced, and the road conditions are uneven; 3. The tire wear is unbalanced, the vehicle should regularly change the position of the tire, the wear degree of the driving wheel will be larger than that of other wheels, and the inconsistent wear of the tire on the bright side of the two will also cause the direction of the car to deviate; 4. Damage to the components of the chassis suspension system, such as the bending and deformation of the steering knuckle arm and steering knuckle, the deformation of the shock absorber, and the loosening of the ball joint of the swing arm; 5. The mileage is too long, and the poor road conditions lead to changes in tire positioning parameters; 6. The accident repair parameters are unqualified, the wheelbase length on both sides is inconsistent, the wheelbase difference on both sides is too large, and it has not been corrected in time, or it does not meet the technical requirements after correction.

How to drive in a straight line without drifting, there are also reasons for the phenomenon of vehicle separation. Generally speaking, the basic phenomenon of deviation is that the car is not easy to keep a straight line when driving, and it always needs to automatically deviate to a specific direction. This is bias.

Left and right generally do not ignore left and right. If it appears left and right, it is best to check the steering wheel. The following problems are common when an empty car deviates from the straight road without considering the balance between the road and the things on board.

Tire pressure is unstable. Long driving times can lead to unstable tire pressure and mistracking due to tire wear.

Damaged springs and shock absorbers, which can also affect the deviation of the vehicle, can be checked. In addition, it is also a problem with the steering system. Usually driving habits may exert force in one direction, and even if fatigue occurs, memory will be skewed, so the key is to check these places.

If there is a problem with the tire, it can be replaced. Some models deviate from the factory due to design and manufacturing reasons, and the steering system of the chassis of other models is not in harmony with the braking system and suspension system, and automatically disengages when braking or decelerating.

They are so-called tyre-induced failures that are basically unmanageable. The interference of the movement between the guide rod and the steering rod of the suspension, as well as the deformation of the suspension during braking, can lead to the movement of the steering rod, which leads to the mistracking of the car. This phenomenon is the same as that of Dongfeng Motor, where part of the front axle is visible as a full axle on the truck.

Front-wheel drive vehicles tend to turn to the right when accelerating, which is due to torque steering caused by the unequal length of the half-axles on both sides of the vehicle in front. This is an inherent characteristic of the vehicle ahead, not a malfunction. Generally, the greater the horsepower, the larger the vehicle in front, the more obvious this distortion phenomenon is, and it is not obvious in small displacement vehicles.

Because tires will cause a lot of car mistracking, the first thing we need to check when the car is misaligned is the tire.

For example, if the tire pressures on both sides of the same axis line are different, the car will be biased to the side that lost the tire. The tires on both sides of the coaxial are of different sizes and have different tire diameters, so the distance the wheels travel at the same speed is also different, and the tire diameter of the car also tends to be on the smaller side, which can happen after replacing the full-size spare tire. The tire pattern on both sides of the same axis is different, and the adhesion between the tire and the floor is inconsistent, which may lead to deviation.

In addition, some models use one-way or asymmetrical tread tires that can deviate during driving if not installed in the specified direction.

The main reasons why the car is easy to deviate are tire failure or inaccurate wheel alignment, as well as steering system failure, and other reasons may also exist, but it is difficult to guess, it is recommended to go to the repair shop immediately to check it.

The main reason for the deviation of the moving car is that your steering wheel is loose and cannot fix the wheels well. You should tighten all the screws in time to avoid accidents.

Insufficient tire pressure, different levels of tire tread wear on both sides, or mounting problems (reversing the direction of the inside and outside) can also cause the vehicle to deviate.

Although the car deviation is not a problem that can make the car break down immediately, there are still many hidden dangers in long-term driving deviation of the vehicle, and if the deviation occurs, it should be checked in time. Look at the influence of external factors, or the reason of the car itself, for the possible reasons for investigation, because the four-wheel alignment is not accurate caused by the deviation, it is recommended to check the vehicle; If the tire is the problem, go to the store in time to check it and make corresponding changes.

There are several common causes of mistracking:

1.The air pressure of the tires on both sides is not equal, and it will deviate when rolling.

2.The front shock absorber spring deformation is inconsistent on both sides.

3.The chassis parts of the vehicle are worn out excessively and there are abnormal clearances.

4.When installing tires, if you don't pay attention to the direction of the tread, the two tires will go in the same direction, which will also deviate.

5.The overall deformation of the vehicle, the difference between the wheelbases on both sides is too large, beyond the maximum allowable range, and it will also deviate, which can be measured by a tape measure.

1. The air pressure of the left or right tire is inconsistent;

2. The left and right wheelbases are inconsistent;

3. Deformation of one side of the steel ring;

4. The front wheel alignment is incorrect;

5. The front wheel leans back incorrectly;

6. The two sides of the tire wear are different;

7. The toe is wrong;

8. The friction plate of the wheel of one side of the car is locked (the piston of the sub-cylinder is stuck after braking).

This is a problem with the air pressure or dynamic balance of your left and right tires, which is the need to go to a repair shop or CS shop to make a dynamic balance.