Abnormal noise of automobiles often reflects some faults or faults of automobiles. If they can be found and eliminated in time, they can avoid the expansion of faults and ensure driving safety. On the contrary, it will bring great security risks. When it comes to driving danger, except brake failure and throttle failure. The failure on the wheel is very dangerous. How to judge the possible faults and hidden dangers on the wheel from the abnormal sound on the wheel?
I. Nails and gravel are tied to the tire
The sound is a round of tires, just like something "clapping" and "clapping" on the ground, speeding up with the increase of speed. If the stone is pried off, if it is a nail, if the tire pressure is OK in the city, you can directly drive the car to the repair shop to repair the tire.
II. Metal friction sound-brake pads are too thin
The front wheel brake pads of automobiles generally have electronic devices, while the rear wheels do not, but most of them have mechanical alarm pads. When the brake disc is worn too thin, there will be a metal friction sound of "thorn" and "thorn. If there is a problem with the car, find the master: WeChat qichebaoyangdashi is very slight when you don't step on the brake, and the sound will increase when you step on the brake, which is very harsh. At this time, you must move slowly to change the brake pads.
General wheels can observe the thickness of brake pads from the gap of the rim, and must be replaced when the estimated thickness is less than 3mm. The replacement of brake pads needs to be changed to a regular maintenance factory, which is the key component of driving safety and must not be careless.
3. Uneven tread
This kind of abnormal sound gives people the feeling of "hiccup" and "hiccup" as if the tire has been rolling something all the time, and it is often accompanied by the shaking of the steering wheel, the phenomenon of turning left and right. In these cases, it is better to replace the tire (or rim) and never drive with illness.
IV. Wheel bearing abnormal sound
The sound is a kind of "buzzing" sound, which gradually increases with the increase of vehicle speed. If you suspect that the bearing is ringing, you can lift the wheel and check it according to the picture below. If the tire bearing is indeed ringing, it is recommended to check and replace it at the maintenance factory as soon as possible to avoid damaging the axle body.
5. Tire pressure is too high, too early to get bigger
Generally, the tire pressure of a car should be about 2.4bar before and after no load, about 2.6bar before and about 2.7bar after full load. Each car is also different. For more information about the exact value, see the operating instructions of your own car. The tire pressure is too high, and the tire noise cannot be heard when running, and it feels as if the suspension is hardened, the ground is strong, and the direction is lighter by blanketed. In this case, let the gas go a little, and just adjust the air pressure to the standard value. For cars with tire pressure monitoring, this kind of situation rarely happens, because when the charge is high, it can be seen at that time.
VI. Bolts are not tightened
The sound is the sound of "Dangdang" and "Dangdang" at the moment when the vehicle walks and stops, and the acceleration and deceleration steering also have obvious noise. It is very loose, and I can still feel the car body twisting when driving, which is difficult to control. The solution is to re-tighten the bolt, but it is recommended to go to the repair shop as soon as possible to check whether the bolt hole on the bolt or rim is damaged. If it is damaged, it is better to replace it.
