What is the cause of car mistracking, what is the cause of car mistracking

Most drivers think that as long as the car deviates, there is a problem with the four-wheel alignment, and the four-wheel alignment should be done. In fact, there are many reasons for deviation:

1.Insufficient air pressure in the tires will cause them to deviate;

2.The degree of wear of the tread pattern is not the same, and it will deviate;

3.If there is a problem with the design of the suspension system, it will deviate;

4.Suspension injuries, deformation, displacement, etc. will cause mistracking, 5The quality of the steering system will also affect the straight line of the car.

The loosening of each connector due to excessive wear clearance or wear of bearings, kingpins and bushings will cause the car to swing its head during driving and cannot maintain a normal movement trajectory. If the knuckle arm and knuckle are bent and deformed, it will generally cause the car to deviate in one direction. The most serious thing is that the ball joint of the horizontal tie rod is severely worn and loosens, which will cause steering failure, and the car will lose control completely.

6.brake causes.

When braking disc brakes, the brake fluid pushes the piston to move outward, and the piston pushes the brake block and brake disc to play the role of braking. The piston needs to overcome a certain resistance (i.e., starting pressure) when moving outward, and if the resistance is not the same, it will affect the time and force of the brake block acting on the brake disc, resulting in brake mistracking.

When braking, the drum brake first overcomes the tensile force of the brake shoe return spring (i.e., the threshold pressure), and then causes the brake shoe and the brake drum to rub to generate braking torque. If the force requirements of the return spring are not very high when the drum brake is designed, or the return spring is stuck, then the force to overcome the brake shoe return spring during braking is not the same, and the braking force and speed generated by the left and right brakes are different, resulting in the phenomenon of brake deviation.

The difference in the size of the gap between the left and right brakes and the shoe can also cause brake mistracking.

7.The normal road surface is sloping, high in the middle and low on both sides, so in China, the car will generally deviate to the right on the road.

In short, there are many reasons for deviation, but four-wheel alignment is the same as a headache according to the cold treatment, all deviation phenomenon is by no means only by doing a four-wheel alignment or moving a balance can be solved, and often changing the tire position can be effectively prevented.

1.Tire loss.

The imbalance of tire pressure on both sides of the vehicle will directly lead to the deviation of the vehicle! The principle is very simple, the tire pressure on both sides is unbalanced, on a flat road, the left and right are high and low, and the vehicle will naturally deviate to the side of the gas loss.

Solution: It is recommended to check whether the tire pressure on both sides is normal, if there is a loss of air, then carry out air filling, if there is still deviation, then continue to look down.

2.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 and on and off the road, the parameters of four-wheel alignment are more likely to change.

Solution: Find a time to go to the 4S store to do a four-wheel alignment, the probability of deviation caused by this reason is quite large.

3.The wheelbase on the left and right sides is inconsistent.

Wheelbase is the distance between the two perpendiculars that pass through the center of two adjacent wheels on the same side of the vehicle and are perpendicular to the longitudinal plane of symmetry of the vehicle. To put it simply, it is the distance from the center of the front axle to the center of the rear axle of the car. As shown in Fig-2, a is the wheelbase of the car.

If the body is deformed greatly, and it is not corrected in time, or it does not meet the technical requirements after correction, it will lead to the inconsistency of the left and right wheelbases, and the load-bearing body of the car is more prominent. When a car is moving, it is deflected towards the side with a shorter wheelbase.

Solution: First of all, check the wheelbase on both sides with a four-wheel aligner, if the wheelbase difference does not meet the technical requirements, the body corrector can be used to restore the deformation. When making a preliminary judgment, you can also use a meter ruler to measure at the center of the wheel.

4.Chassis problems.

Mistracking can also be caused by changes in the main components of the chassis, which can be due to wear and tear caused by daily driving, or due to frame deformation caused by accidents. If there is a change in components such as the lower swing arm or the gap is too large, adjusting or replacing the parts can be solved; If it is caused by the deformation of the car body and the damage to the frame caused by the accident, it is more serious, and it is necessary to replace parts in a large area or even to correct the frame before it can be fully recovered.

There are five main reasons for car mistracking.

The first reason is mainly caused by the inconsistent tire pressure on the left and right sides of the driving wheel, resulting in the different friction between the tire and the ground and causing misalignment. Therefore, checking the tire pressure is the first step to solve the mistracking.

The second reason is the inconsistency of the left and right tire patterns or depths. The grip of the old and new tires is different, if one side is a new tire and the other side uses an old tire with a large wear gap, there will be a mistracking, in which case the tire needs to be replaced.

The third is suspension system failure, such as suspension injury, deformation, displacement, etc. This situation will cause the tire alignment to not be adjusted to the standard position, which is a more serious problem that requires four-wheel alignment to adjust or replace faulty suspension accessories, which is more common.

The fourth reason is that the wheelbase on the left and right sides is inconsistent, the overall deformation of the body, the difference between the front and rear wheel tracks on the left and right sides is large, and the vehicle will deviate to the side with a short wheelbase when the car is moving.

The fifth reason, caused by road factors, because the road on both sides of the drainage system, in general, the road is high in the middle and low on both sides, this situation is not easy to detect the road factors when driving, but for the direction-sensitive model after driving 100-200 meters, the vehicle will deviate to the right. In this case, we have to recall whether there is deviation on all roads, or it is particularly obvious on a certain road, and then analyze whether the road surface is tilted.

1. Tire pressure is unequal.

It is mainly caused by the inconsistent pressure of the driving tire, if the left and right tire pressure are not equal, it will cause the wear degree of the driving wheel and the ground to be different, and different friction will also directly cause deviation. The solution is to go to the car maintenance shop to check the tire pressure.

2. Suspension system failure.

Suspension system failures can also cause the car to mistrack, such as suspension injuries, deformation, displacement, and other ......There will be deviation, such a problem is more serious, once the problem is found, try to do a repair.

3. The wheelbase on the left and right sides is inconsistent.

After a long period of use, the vehicle will inevitably encounter bumps and bumps. When the overall deformation of the vehicle, the difference between the wheelbases on both sides is too large, and it is not corrected in time, or the correction does not meet the technical requirements, when the car is driving, the vehicle will deviate to the side with a short wheelbase.

The reason why the car is misaligned is that your vehicle is not dynamically balanced, and it is not aligned with the four wheels. So if you just do a dynamic balance and wheel alignment, your car won't deviate anymore.

Clause. 1. No matter what brand of tires, if the tire patterns on both sides of the car tires are different or the difference in the depth of the patterns is large. Generally, it is recommended that you use tires with the same tire brand, tire pattern, tire specifications, etc., at least to ensure that the coaxial tires are the same.

This can avoid eccentric wear and misalignment caused by different tires of the car, and even cause the car tires to have to be replaced. Second.

Car deviation is very dangerous, and damage can occur at any time, but when it comes to vehicle deviation, it is not for no reason, and it will always be predicted in advance. , but for stupid car owners, it's too embarrassing for them, anxious for a long time, but they still can't judge, how to solve it?

Tire pressure is unstable, not waiting:

When the owner suddenly finds that the tire pressure is unstable, it is necessary to be vigilant, the tire pressure is unstable, and with the increase in wear, the degree of wear of the four wheels is different, the vehicle will have an unexpected situation of deviation, in order to avoid wear and tear, the owner can consider doing a four-wheel alignment, or change the tire position.

The steering system components are deformed and the clearance is large

In the steering system, all parts of the vehicle are closely divided and cooperated, but when the vehicle wear increases, the friction between the components increases, the gap will be larger, and the bearing wear will be loose, so that the vehicle parts can not be driven according to the specified track, there will be deviation from the track, and the vehicle will deviate from the fault, therefore, the car owner regularly inspects and maintains the components between the steering system.

Excessive chassis wear:

Don't underestimate the chassis, usually in a hidden position, naturally we will not pay too much attention, to know that when the chassis fails, it will also cause the vehicle to deviate, when the chassis is too worn, or the gap between the stabilizer bar rubber sleeve is not the same, it is necessary to pay attention to reduce chassis wear, you can consider installing chassis armor, whether it is necessary to combine the road conditions.

There are many reasons for vehicle deviation failure, the owner can actually see from the tire situation, directly and clearly, after the vehicle deviation, the owner starts from the tires and components, one by one, do not be careless, resulting in greater safety hazards.

1. Tire deformation

Tire deformation mistracking is more likely to occur in new cars, as the shape of the tire changes due to the vehicle being left in the garage for a long time, resulting in left or right mistracking. Usually, the tire pressure is about 7 bar, and it is baked at a high temperature of 70 degrees overnight, and the problem will be solved.

Second, the left and right tire pressures are inconsistent

When there is a large difference in tire pressure, the radius of the left and right tires will be different. At the same tire speed, the side with high tire pressure will travel longer on the side with lower tire pressure. Since the two wheels are basically rigidly connected, the vehicle will automatically deviate towards the side of the wheel with lower tire pressure.

Third, the tire pattern is inconsistent

There are two types of mistracking caused by inconsistent tire patterns. One is due to the different thickness of the tire pattern on the left and right sides, and the deviation caused by it is due to the different tire patterns, the lateral adhesion of the wheels is different, and the side with thick patterns has a strong grip and a larger lateral force, which pushes the vehicle to deviate. On the one hand, it is also caused by the difference in the radius of the two wheels, which will not be repeated here.

Another situation is that the two patterns are not the same'The new tires cause mistracking, and the vehicle misalignment is completely due to the different patterns and the different sizes of the left and right lateral adhesion.

Fourth, the height of the vehicle is not the same

For vehicles with air suspension, a difference of more than one millimeter between the left and right heights of the vehicle will cause the vehicle to deviate significantly. It is also caused by the deviation of the vehicle's center of gravity and the difference in lateral adhesion of the left and right wheels. The left and right height of the vehicle can be determined by measuring the gap between the top of the two wheels and the fender when the vehicle is stationary.

Fifth, the steering wheel is not right

Some repair shops do not take the correct way to adjust the problem of improper steering wheel in order to facilitate the treatment, and directly remove the steering wheel and rotate it at a certain angle and reinstall it. Although the steering wheel feels positive when driving, it will cause the steering system of the vehicle to deviate in one direction as a whole, resulting in deviation.

Sixth, the front wheel toe

Excessive toe-in angle of the front wheels can also cause mistracking, which is not easy to detect with the naked eye. The deviation caused by it is usually accompanied by the phenomenon of tire eccentricity, which is what we often call tire gnawing.

7. The caster angle of the kingpin

Vehicles typically deviate to the side of the kingpin with a smaller caster. In general, it is not easy to detect. If the vehicle has been caused by a collision, measure the distance between the rear of the two front wheels and the vehicle body to determine whether it is caused by the collision in the direction of the vehicle.

The vehicle will deviate to the side with smaller gaps.

8. Camber

The vehicle will deviate to the side with a greater camber angle. It is usually accompanied by the eccentric wear of the tire. However, the eccentric grinding shape is different from the toe-induced ectoe shape.

What is the deviation of the car?

Deviation is a phenomenon in which the center line of the front and rear axles is inconsistent with the center line of the driving trajectory when the car is driving in a straight line on a flat road.

The car deviates. The hazards of car mistracking.

It can lead to tire puncture and scrapping, and at worst, it will lead to tire bursts, vehicle loss of control and other dangerous situations.

Although deviation is not a problem that can break down immediately, long-term deviation of the car will cause many safety hazards.

It's not uncommon for cars to go in the wrong direction. If the fault is not eliminated in time, it is dangerous. Generally, it can be solved by four-wheel alignment. If it still can't be eliminated, it may be caused by other reasons. Take a look at some of the common causes of car mistracking.

Cause of car mistracking 1

The tread pattern of the tires on both sides is different, or the tread pattern is different from dark to shallow height.

It is best to use the same type of tires for the whole car. At a minimum, the front and rear axles must be the same for both tires, as well as the tread depth. If the wear limit is exceeded, it must be replaced.

Cause of car deviation 2

The tire pressure on both sides is not equal.

Unbalanced tire pressure can cause tires to vary in size, which will inevitably lead to mistracking during rolling.

The third reason for the deviation of the car.

The deformation of the front shock spring results in inconsistent cushioning on both sides.

The quality of the shock absorber springs can be judged by comparison after pressing or dismantling.

Cause of car mistracking 4

The front shock absorber failed.

After the failure of the front shock absorber, when the vehicle is driving, the two suspensions, one high and one low, are stressed unevenly, resulting in deviation. Through the special shock absorber tester, the absorption degree of the shock absorber can be detected, and the shock absorber can be judged and repaired in time.

Causes of car mistracking5

Excessive wear and abnormal clearance of vehicle chassis components.

Steering tie rod ball joints, rubber sleeves for support arms, rubber sleeves for stabilizer bars, etc. It is a common part with too much clearance, so the vehicle should be lifted for careful inspection.

Causes of car mistracking 6

Poor brake return and disengagement of tires can also lead to misdirection.

This is equivalent to a wheel that has been partially braking, and the vehicle will inevitably deviate when driving.

Reasons for car mistracking7

The overall deformation of the frame.

If the difference in wheelbase 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 with a correction table.

Reasons why the car deviates 8

When installing tires (single-sided tires), not paying attention to the direction of the tread pattern (not in the same direction) will cause deviation of the direction.

Check that the tires are not noticing the direction of the tread when they are installed. If there is, then change it.

Wheel alignment is a must, but don't do it as soon as you notice a deviation. It's not too late to check again based on the above reasons. Hope this article can help you.