How to see if the brake pads of the car need to be replaced

The thickness of the brake pad becomes smaller due to wear, and it can generally be judged from the following aspects whether the brake pad needs to be replaced

1. Empirical method: the braking system has not been overhauled for a long time, the brake pedal is getting lower and lower, and the braking distance is increasing;

2. For most models, you can observe the thickness of the brake disc and brake pad from the side of the tire, and for experienced drivers, you can judge whether it needs to be replaced;

3. If it cannot be observed, the wheel can be removed, the thickness of the brake pad can be checked, when the thickness is less than 1 3 of the new brake pad, it should be considered to replace or shorten the inspection time (with wear, the braking effect will be significantly worse); Some models have brake pad wear limit alarm (metal friction sound) or instrument indication, which should be paid attention to in time.

Automobile brake pads are the key parts of the vehicle, and everyone attaches great importance to it and knows that it is related to life safety.

So, what are the standards for brake pad replacement? And why change it? The following is a detailed introduction to the butterfly brake of the car.

1. Some vehicles have brake pad wear limit warning light, under normal circumstances, the light is on to remind you that it is time to change the brake pads.

2. The thickness of the brake pad is between 1 - (the manufacturer can not distinguish it), when the wear thickness is less than 3mm, the brake pad needs to be replaced.

Generally, brake pads have wear limit markings.

3. When the brake pedal is pressed deeper than usual (the brake stroke increases), or the brake is soft, it may be that the brake pads are almost finished.

Because now the brakes are all automatically adjusted. When the brake pads are worn, the brake working stroke naturally increases.

4. The brake fluid in the brake oil pot is reduced.

At this time, due to the wear of the brake pads, the gap between the disc and the disc becomes larger, when the gap is automatically adjusted, the sub-pump yearns to open, at this time, the sub-pump needs to replenish the brake oil. Then, the oil pot brake fluid will inevitably be reduced.

5. When braking, if you hear a squeaky sound, it is estimated that it is the sound of iron rubbing between the blades and the disc, and it is estimated that the brake pads will have to be replaced. Of course, it's possible that the screaming sound is caused by the stiffening of the brake pads and discs after the high temperature. So it has to be removed and checked.

6. If there is oil leakage from the brake cylinder, after polluting the brake pads, immerse the brake pads, and polish them with an abrasive cloth, and still find that there are oil stains, at this time, no matter how thick they are, they must be replaced.

The above are a few reasons why brake pads need to be replaced. Guys, the brakes are no joke. It must be inspected every time the vehicle is serviced.

Many people use the number of kilometers to confirm whether they need to be replaced, which is not advisable. The key lies in the operating habits of each person and the driving conditions. Some people change it after tens of thousands of kilometers, and some people don't change it when they reach 100,000 kilometers.

Therefore, check the brake pads according to the above standards, and do not simply change the brake pads by the number of kilometers, otherwise, it will cause a big disaster.

Generally, the thickness of the new brake pad is centimeters, we can regularly observe and observe the thickness of the brake pad, if we can't see the brake pad, we must replace it in time. Of course, some vehicles are not easy to observe when the two wheels are in the back, so go to the repair shop or check when maintaining the car.

Pay attention to the brakes for abnormal noises.

If the brake pad mode reaches the limit, there will often be some creaking sounds, that is, the sound of iron hitting iron, if such a sound continues to appear, it means that the brake pads must be replaced. Note that when braking normally, if you encounter sand or muddy water, there will be a sound when braking, so you should distinguish it from the sound of iron hitting iron.

Don't simply judge whether you need to replace the brake pads by the effect of the brake or the feeling of the foot, such a feeling is often inaccurate, because if the brake feels a little soft, it is not necessarily a problem with the brake pads, but also a problem with the brake line, or a lack of brake fluid.

Brake pads must choose the brand, this is very important, now there are too many fakes, you can't be greedy for cheap, otherwise you will suffer a big loss, after all, brake pads are the key to the vehicle. If you want to shop online, then choose a brand store with a high reputation, and don't buy it casually on a certain treasure.

If we go to the repair shop to replace the brake pads, we can also buy the brand directly, and the regular repair shop brake pads can be used, which is also more worry-free, and then let the repair shop replace it, but it will make the repairman reluctant, and the replacement is not suitable for trouble.

The newly replaced brake pads should pay attention to the running-in, do not brake sharply in the first 500 kilometers, and do not step on the brakes for a long time, otherwise it will affect the life of the brake pads.

The method of judging whether the brake pads need to be replaced is as follows:

2. Look at the thickness of the brake pads: when the wear thickness is less than 3mm, the brake pads need to be replaced.

3. Feel the braking strength: When the brake pedal is pressed deeper than usual, or the brake is soft, the brake pads may be almost worn out and the brake pads need to be replaced.

4. Check the brake fluid in the brake oil can: the brake fluid needs to be replaced when it is reduced.

5. Check whether the brake cylinder is leaking: after the brake cylinder leaks, immerse the brake pads and polish it with an abrasive cloth, it is still found that there is oil stains, no matter how thick it is, it must be replaced.

1.The brake pedal of the car is under the steering wheel, and when the brake pedal is pressed, the brake lever is pressurized and transmitted to the brake pad on the brake drum to jam the brake wheel, so that the car slows down or stops running. The manual brake of the car is next to the gear shift and is connected to the brake bar.

Bicycle brakes are also common, which are decelerated by rod brakes fixed to the frame or disc brakes.

2.The brakes are accomplished by the intense friction between the brake pads and the brake drums.

3.The principle of braking is to convert the kinetic energy of the car into heat energy and consume it, and the kinetic energy comes from the power provided by the engine, which needs to be provided by the work of fuel combustion, which means that if you step on the brakes once, it means that your gasoline will be wasted. So, please remember the first point:

When driving, apply the brakes as little as possible, and braking is only for comfort or in an emergency.

4.Many brakes are emergency brakes as a last resort, so you must pay attention to the braking skills. There are two situations discussed here, one is the vehicle without the ABS anti-lock braking system, and the old vehicles are basically like this.

When this kind of vehicle encounters emergency braking, if the braking force is too large, it may make the car tires lock (the tires do not rotate at all), we can often see two black brake marks that drag a long time on the road, which is the traces of friction between the tires and the ground when the car brakes without ABS, the tires will no longer rotate after the tires are locked due to emergency braking, but the huge inertia will make the tires of the car rub against the ground and continue to slide forward, The violent friction between the tire and the ground caused a black mark on the rubber particles that had been rubbed off on the tire. At this time, if you force the direction, it will often have serious consequences such as deviation, side slippage, tail flicking, or even rollover out of control.

The braking system is generally composed of two main parts: the brake control mechanism and the brake. The brake control mechanism produces the braking action, controls the braking effect, and transmits the braking energy to the various parts of the braking system, and the brake is the part that generates the force that hinders the movement or movement trend of the vehicle.

1. Generally, the vehicle will automatically alarm, when the brake pads are worn to the extent that they need to be replaced, on the car dashboard, the owner will be prompted to replace the new brake pads.

2. If there is no automatic alarm function, the owner should not worry too much, usually the brake pads will have a small groove, when the brake pads are worn to the position of this small groove, you need to replace the brake pads with new ones.

3. The owner can visually inspect the thickness of the new brake pads at about 1cm, and the owner observes that when the thickness of the brake pads is 3mm, the brake pads are too thin, and the owner should replace the new brake pads in time.

Generally, the front brake pads are replaced by 2 30,000 kilometers, and the rear brake pads are replaced by about 6 80,000 kilometers, but everyone's car habits are different, and the specific replacement time still needs to be determined according to the wear degree of the brake pads, and try not to exceed the above kilometers.

Usually the thickness of the new brake pads is generally around the center, but after continuous friction, it will slowly become thinner, and professional technicians suggest that if the brake pads are observed with the naked eye, the thickness of the brake pads needs to be checked when driving 30,000 kilometers, and when the wear is left 3mm, the thickness is only 1 3, then we have to start to consider replacing the brake pads.

Of course, some models can not see the thickness of the brake pads with the naked eye, so you can only go to the repair shop to ask the master to observe, and some vehicles also provide a self-check function, and the dashboard will display a prompt for brake pad wear!

During driving, you can hear a screeching sound, indicating that the brake pads have worn out to the brake disc and need to be replaced in time.

The limit markings on both sides of the brake pads have been directly rubbed against the brake disc, proving that the brake pads have exceeded the limit. In this case, the brake pads should be replaced at the same time with the inspection of the brake disc, when this sound often the brake disc has been damaged, even if the new brake pad is replaced still can not eliminate the sound, serious need to replace the brake disc.

When the brake pads become thinner, our braking effect will be affected, at this time you need to step on the brake plate deeper to achieve the original braking effect, feel that the braking effect is significantly weakened, many people feel that their brakes have become softer, a little unstoppable, that prompts you to replace the brake pads in time.

Here are some special situations to look out for:

1. Novices generally step on the brakes more, and the consumption will be larger.

2. Automatic transmission costs brake pads compared with manual transmission, because the shift of automatic transmission depends on the accelerator pedal and brake pedal.

3. The wear and tear of brake pads will be faster than that of cars on the highway.

4. Cars with large load capacity have large brake pad loss.

The thickness of the brake pad becomes smaller due to wear, and it can generally be judged from the following aspects whether the brake pad needs to be replaced

1. Empirical method: the braking system has not been overhauled for a long time, the brake pedal is getting lower and lower, and the braking distance is increasing;

2. For most models, you can observe the thickness of the brake disc and brake pad from the side of the tire, and for experienced drivers, you can judge whether it needs to be replaced;

3. If it cannot be observed, the wheel can be removed, the thickness of the brake pad can be checked, when the thickness is less than 1 3 of the new brake pad, it should be considered to replace or shorten the inspection time (with wear, the braking effect will be significantly worse); Some models have brake pad wear limit alarm (metal friction sound) or instrument indication, which should be paid attention to in time.

Under normal circumstances, when the brake pads are about to run out, you will hear the alarm sound.

The thickness of the brake pad becomes smaller due to wear, and it can generally be judged from the following aspects whether the brake pad needs to be replaced

1. Empirical method: the braking system has not been overhauled for a long time, the brake pedal is getting lower and lower, and the braking distance is increasing;

2. For most models, you can observe the thickness of the brake disc and brake pad from the side of the tire, and for experienced drivers, you can judge whether it needs to be replaced;

3. If it cannot be observed, the wheel can be removed, the thickness of the brake pad can be checked, when the thickness is less than 1 3 of the new brake pad, it should be considered to replace or shorten the inspection time (with wear, the braking effect will be significantly worse); Some models have brake pad wear limit alarm (metal friction sound) or instrument indication, which should be paid attention to in time.

The brake pads of a better car need to be replaced, and there will be a prompt on the instrument screen, most of the general cars will grind to the time to be replaced, and there will be a squeaky metal friction sound when stepping on the brakes, that is, there is a piece of metal on the brake pads that specifically reminds the thickness (similar to the transverse prompt bump in the tire tread groove), which is what you are going to replace If you don't let the maintenance master disassemble and check, you will estimate one yourself.

Wait a minute. Hello, the method of judging whether the brake pad should be replaced: through the remaining thickness of the brake pad, you can judge whether the brake pad should be replaced. Brake pads are a wearing part that needs to be replaced regularly, this component belongs to the braking system of the car, this component is quite important for driving safety, if the remaining thickness of the brake pads is too small, it will lead to a reduction in braking force, which may cause some accidents.

So replace the brake pads regularly. When buying brake pads, you must also choose the best products of big brands, and don't buy inferior brake pads for cheapness. Car owners can't replace the brake pads by themselves, and replacing the brake pads requires professionals to use professional tools to replace them.

At each service, the technician should check the remaining thickness of the brake pads and the condition of the brake discs.

Due to everyone's different driving habits and driving conditions, the use time and replacement cycle of brake pads are also different. Some people have a more aggressive driving style, so this kind of brake pads wear out a little faster, and they need to be replaced more frequently. Some people have a very gentle driving style, so the brake pads will last longer.

When using the car, you should also check the brake fluid regularly, which is a liquid that can easily absorb water. If the moisture content of the brake fluid is too high, it will cause the braking force to drop and the braking distance will be extended, which will affect driving safety.

The first method of self-inspection is the simplest, which is to judge through the dashboard in the car. If the warning light representing the brake is on, the brake pads have reached a critical point and need to be replaced immediately.

The second method needs to use hearing, if the car brakes in the process of form, it will make a sound similar to "zizi", at this time you need to be vigilant, it may be that the brake pads are too thin, if it is a new brake pad This situation, generally only need to try to step on a few times to eliminate.

<> ask hello! My new car, how to check the brakes were changed by others, just wash a car there, about half an hour or so, Xian car did not look at the scene, there is a sound of brakes when picking up the car and leaving, how to check.

Question: Q5L car, just drove more than 5,000 kilometers.