16 what about the eccentric wear of BMW 5 series tires?

The four-wheel alignment of Pacific Auto Network has been re-done. Most of the tire eccentric wear is concentrated in the front wheel, and the most common eccentric wear in the tire is caused by the negative toe-in value. Generally, the eccentric wear of the rear wheel is due to the accident repair that changes the original design geometric angle of the tire, or the geometric angle of the rear axle and suspension part changes due to collision deformation during driving, thus affecting the tire to rub against the ground at the correct angle during normal driving, resulting in eccentric wear of the tire.

Four-wheel alignment Let's talk about "four-wheel alignment" first. Adjust the vehicle based on the four-wheel parameters of the vehicle to ensure good driving performance and certain reliability. Driving for a long time will change the standard value set by the original factory of the automobile, and restore the standard set by the original factory through four-wheel positioning, which is also the original intention of the four-wheel positioning work.

When there is a problem with four-wheel alignment, how will the car react?

If there is a problem with the wheel alignment on one side of the vehicle with deviation, the vehicle will deviate when the steering wheel is positive! If there are problems on the front and rear sides, the car will not run off, but it will definitely wear the tires!

The steering wheel is not the opposite. Your vehicle is driving in a straight line, but the steering wheel is left or right. This situation is also a problem of four-wheel alignment. Here, I would like to remind you that if the lower arm has been replaced, you must do four-wheel positioning, otherwise there will be deviation or incorrect direction. Don't ask me how I know, I just experienced it myself!

Abnormal tire wear If serious tire wear is found inside and outside, four-wheel alignment must be done. There is a simple reason. When the contact between the wheel and the ground is uneven, there will definitely be eccentric wear. Generally, tens or hundreds of kilometers will be badly worn, but there are also cases where driving more than a few hundred kilometers will be more obvious.

Summary: If there is a problem with four-wheel alignment, there will definitely be two situations, one is abnormal tire wear, and the other is the imagination of deviation!

How to decide whether to do four-wheel alignment?

Long-term bad road, one-way street If your vehicle is driving in potholes and one-way streets for a long time, you need to do four-wheel alignment regularly, because these roads will lead to premature aging of your chassis rubber products, leading to changes in the original factory value!

Driving state If the vehicle deviates, the vehicle shakes during driving, and the steering wheel deviates incorrectly, you need to see if there is any problem with the four-wheel alignment immediately!

Tire wear If you find that the tire is worn to one side (inside and outside), don't change the tire without permission because of the inclination angle of the tire hub. So you didn't solve the problem by adjusting the tires, because the root cause is not here!

Replacement or old damage of chassis parts If you have replaced or modified chassis parts, it is recommended that you do a four-wheel alignment, because the subsequent replacement will inevitably be different from the original value, so it is recommended that you check the four-wheel alignment!