I think most car owners have encountered the problem of abnormal wheel noise. Sometimes they think it's a small problem and they don't pay much attention to it. However, the abnormal car noise often reflects some faults or faults of the car. If it can't be found and eliminated in time, it will bring great potential safety hazard. When it comes to driving danger, in addition to brake failure, throttle failure. The trouble on the wheels is very dangerous. How to judge the possible faults and hidden dangers from the abnormal noise on the wheel?

1、轮胎扎了钉子、碎石

1. The tire was punctured with nails and gravel

其响声是轮胎转一圈响一下，就像有个东西“啪嗒”“啪嗒”地敲打地面，随着车速的提高节奏加 快。若是石块撬掉就行，若是钉子，在市内时如轮胎气压还可以，可直接把车开到维修店补胎。

The noise is that the tire makes a circle, just like something "PATA" and "PATA" knocking on the ground. With the increase of the speed, the rhythm speeds up. If it's a stone, just pry it off. If it's a nail, if the tire pressure is OK in the city, you can drive the car directly to the repair shop to repair the tire.

2、金属摩擦声——刹车片过薄

2. Metal friction sound: too thin brake pad

汽车的前轮刹车片一般都有电子的装置，后轮则没有，但大都有机 械的报 警片。当刹车盘磨太薄时，就会发出“刺啦”“刺啦”的金属摩擦声。不踩刹车时很轻微，踩刹车时声音会加重，很刺耳。这时您必 须慢行去换刹车片了。

The front wheel brake pad of a car generally has an electronic device, while the rear wheel does not, but most of them have a mechanical alarm pad. When the brake disc is too thin, it will make a metal friction sound of "pricking" and "pricking". When you don't step on the brake, it's very slight. When you step on the brake, the sound will increase and it's very harsh. Now you have to go slowly to change the brake pads.

一般的车轮从轮辋的空隙中就可以观察刹车片的厚度，当观察估算厚度小于3毫米时就一定更换了。更换刹车片要到正规维修厂换，这是行车安 全的关键零部件，不能马虎。

Generally, the thickness of the brake pad can be observed from the gap of the wheel rim. When the estimated thickness is less than 3mm, it must be replaced. To replace the brake pads, you need to go to a regular repair shop. It's a key part for driving safety, and you can't be careless.

3、胎面不平

3. Uneven tread

这种异响给人的感觉是轮胎好像一直碾压着什么东西似的“嗝噜”“嗝噜””的声音，并且常伴有方向盘摆震，忽左忽右的现象。出现这些情况更换轮胎（或轮辋），千万不要带病行车。

This kind of abnormal noise gives people the feeling that the tire seems to be rolling something all the time, and it is often accompanied by steering wheel shimmy, left and right. In these cases, replace the tire (or rim), do not drive with disease.

4、车轮轴承异响

4. Abnormal noise of wheel bearing

其声音是一种“嗡嗡”的响声，随车速的增高声音也逐渐变大。怀疑那个轴承响，可以顶起车轮，按下面的图片说明检查。如确实是轮胎轴承响，建议尽快到维修厂检查更换，以免损坏车轴车体。

Its sound is a kind of "buzzing" sound, and the sound gradually increases with the increase of vehicle speed. If you suspect that the bearing is noisy, you can jack up the wheel and check it according to the picture below. If it is the tire bearing, it is recommended to check and replace it at the maintenance plant as soon as possible to avoid damaging the axle body.

5、胎压过高，太早变大

5. The tire pressure is too high, too early to increase

一般的轿车胎压空载时前后应均为2.4bar左右，满载时前为2.6bar左右，后为2.7bar左右。每个车也有差异的，具体准确数值请看自己车的使用说明书。胎压太高，跑起来不光能听到胎噪很大，而且感觉好像悬架变硬了，颠地厉害，并且方向变轻发飘。遇到这种情况把气放一些，气压调到标准值就行了。对于带胎压监控的汽车来说，这样的情况发生的很少，因为充高了当时就能看出来。

Generally, the tire pressure of a car should be about 2.4 bar before and after no-load, about 2.6 bar before and about 2.7 bar after full load. There are also differences for each car. Please refer to the user manual of your car for the exact value. The tire pressure is too high. You can not only hear the tire noise when you run, but also feel as if the suspension has hardened, bumped heavily, and the direction has become lighter. In this case, let down the gas and adjust the pressure to the standard value. For a car with tire pressure monitoring, such a situation rarely occurs, because it can be seen when the tire is inflated high.

6、螺栓没拧紧

6. The bolt is not tightened

声音是车辆一走一停的瞬间有“咣当”“咣当”的声音，加减速转向也有明显的响声。松的很了，还能感到行驶时车身扭摆，难以驾驭。解决的办法是重新紧固螺栓，但建议尽快去维修厂检查一下，螺栓或轮辋上的螺栓孔是否损坏，如损坏更换。

The sound is the sound of "bang" and "bang" at the moment when the vehicle stops and goes, and the obvious sound of acceleration and deceleration steering. It's very loose. I can also feel the body twisting when I'm driving. It's hard to control. The solution is to re tighten the bolts, but it is recommended to go to the repair shop as soon as possible to check whether the bolts or the bolt holes on the wheel rim are damaged, and replace them if they are damaged.