Daily knowledge of the car How often should the brake pads of the car be replaced

The replacement time interval for brake pads and discs is not fixed, depending on the road the vehicle is driving and how often and how hard the driver presses the brake pedal. Generally, the replacement mileage of conventional brake pads is about 10,000-30,000 kilometers per drive.

Here are some special cases:

a.Novices generally press more brakes, and the consumption will be greater.

b.Automatic transmissions cost more brake pads than manual transmissions, because automatic transmissions are shifted by the accelerator pedal and brake pedal.

c.The brake pads will wear out faster than the cars on the highway. Because the car that often drives in the city often has to stop and go, and the brakes will be used a lot. It may take dozens of kilometers to slow down or stop on the road, and there are relatively few opportunities to use the brakes.

d.Cars with large load capacity have large brake pad loss. In the case of deceleration and braking at the same speed, the inertia of the heavy car is large, and the force of brake pad friction is large, so the wear is large.

Generally speaking, in the case of mixed driving (half highway, half urban), the brake pads of the front wheels should last 6-70,000 kilometers. The brake pads on the rear wheels should last more than 100,000 km. Of course, this is not absolute, but only an approximate average.

The front brake pads wear out quickly, because when braking, the center of gravity of the car will lean forward, and the force to be borne by the front brake is greater than that of the rear brake, with a ratio of about 7:3Therefore, the disc heel of the front brake is generally larger than that of the rear brake.

Brake pads need to be changed once for 3 to 60,000 kilometers. In the braking system of a vehicle, the brake pads are the most important object, and the quality of the brakes is determined by the brake pads.

Depends on your usage. It mainly depends on the frequency of use and road conditions.

Some cars have an alarm light on the dashboard, which indicates that it is time to replace it when it is on!

If there is no prompt, when the friction material on the brake pads grinds to the steel back warning line, you will hear a whistling sound, and you need to replace it immediately.

The reference standard is that the brake pads are ground to 1mm left, and they have to be replaced.

Hello. Replacement cycle: 40,000 km ago.

The braking system is one of the most important car safety performance of the automobile, no matter when, the thickness of the brake pads should be checked regularly, once it is lower than 3mm, remember not to hesitate, it must be replaced in time. The first replacement cycle is generally 40,000 kilometers ago, if there are more sudden brakes in daily use, it should be replaced according to the thickness of the brake pads.

As a qualified driver, you should have a good grasp of the state of the whole car during the driving of the car, especially the brake system of the car, such as the brakes of the car become soft and hard. When it comes to the brake system, I have to talk about the brake pads of the car, because the brake pads not only affect the braking performance of the car, but also a part that is easier for the owner to check and has a long maintenance cycle. But many car owners still have doubts, what is the replacement cycle of brake pads, and when should the brake pads be replaced?

Composition of brake pads.

Brake pads are composed of friction material layer, heat insulation layer, adhesive layer, back plate, etc. The brake pads push the back plate through the brake cylinder to press the friction material of the brake pads on the brake disc for braking, so the quality of the friction pads is particularly important. Some brake pad friction pad material is harder, the braking effect is poor but the service life is long, and some brake pad friction material is softer but the braking performance is good, from this point it can be seen that the life of the brake pad is directly related to the quality of the friction material.

Brake pad replacement intervals.

Car owners may have some controversy about the replacement cycle of brake pads, mainly because the owners of the repair shop want to extend the replacement cycle, and the repair shop wants to shorten the replacement cycle......Perhaps most car owners have encountered this situation, the car owner went to the 4S shop repair shop for maintenance, and the people in the shop only looked at the mileage of your car, and immediately recommended you to change the brake pads ......In fact, there are many times when the brake pads do not need to be replaced, whether the brake pads need to be replaced is not only related to the mileage, but also depends on the actual thickness of the brake pads.

When do brake pads need to be replaced?

In daily use, the owner should pay more attention to the thickness of the brake pads, and when the brake pads are worn to 3mm visually, they need to be replaced. If the owner does not have the habit of checking the vehicle, there is no problem, because there is an alarm sensor on the brake pads, when the brake pads are too thin, the brake pad sensor will alarm on the dashboard, the owner confirms that the brake pads are alarmed, do not panic too much, and drive to the 4S shop to replace it.

Summary: Driving habits have a great impact on the use of car brake pads, and the driver always steps on the brakes during the car driving, which not only consumes fuel but also wears the brake pads, especially when encountering traffic jams, the loss of brake pads is greater. One thing to note::

The front brake pad (front model) of many models needs to be replaced at 28,000 kilometers, but someone can drive the same car to 35,000 kilometers, because of driving habits.

Generally, the front plate is replaced once every 4 to 50,000 kilometers, because the engine leans forward due to inertia when braking in front, so it is easy to wear.

After the film 6 to 80,000 depending on the specific model.

1.Before replacing the brake pads, you should open the lid of the engine compartment brake fluid reservoir to see the height of the brake fluid page, if the brake fluid page is above the maximum limit, you should suck out some brake fluid to prevent the brake fluid from spilling during the replacement process.

2.Prepare the brake pads to be replaced and remove the wheel where the brake is located. During the dismantling process, avoid scratches on the rims.

3.Use a wrench combined with the sleeve to remove the bolts of the brake caliper, and then remove the brake pads (if there is a brake induction line, the brake induction line should be removed first). Observe whether the brake pads are overworn, or cracked, and if so, replace them in the next step.

4.Since there will be a lot of sand or mud in the brake calipers, it is necessary to remove them with a rag and then apply sound muffling paste to prevent abnormal noises when braking.

5.Use the piston pressure pump to press the piston to the position that cannot be pressed, then install the brake pads on the brake caliper, install the new brake pads in place (those with brake induction wires should also be installed), tighten the guide bolts, and the installation is completed.

6.After installation, cover the lid of the reservoir, enter the car and press the brake pedal a few times, and reset the brake. Then observe the brake fluid height and be within the appropriate height range.

7.After changing, test drive to check whether the braking effect is reflected.

Open the brake oil cap, remove the tires, remove the brake pads, reset the pistons, install new brake pads, install the tires, and check the brake fluid level.

<> "How often should the brake pads be changed?

Many friends like to pursue speed when driving, but at the same time of pursuing speed, you should also pay attention to safety, brake pads as one of the most important parts of the car, although its volume is not so huge, but its role is not small. Today let's talk about how to properly check the brake pads and replace them in time.

There is no specific replacement date for brake pads, it is a consumable, and it needs to be inspected to determine whether it needs to be replaced.

1. The position of the brake pads.

The brake pads are located on the inside of the four wheels, with two brake pads, the inner and outer brake pads, and the hidden block brake pads can be seen with the naked eye when viewed from the outside.

2. Judge the condition of brake pads.

Generally, to accurately judge the condition of the brake pads, it is necessary to disassemble the tires in order to check the wear and tear very clearly, so it is recommended that you do not try it lightly. After disassembling the tires, you can see the inner and outer brake pads.

If the thickness of the brake pad is less than 3mm, then the brake pad needs to be replaced, and if there is a thickness of about 1cm, then there is no need to replace it.

Those who can't disassemble the tires by themselves can see if there is a problem with the car from the dashboard.

In higher-spec cars, the instrument cluster is equipped with a brake indicator that lights up if there is a problem with the brake pads to warn you that you need to change the brake pads quickly.

Of course, don't worry if you don't have a special indicator, you can also speculate from other indicators.

In addition, many brake pads have an alarm pad, which is used to remind the owner when the brake pad wear reaches the limit value.

The small brake pad will rub against the brake disc and make a sharp noise, then it is urgent to check and replace the brake pad.

3. Brake pad wear position.

The brake pads of many cars are worn faster by the front wheels and the rear wheels are worn more slowly, so the approximate replacement speed is that the front wheels are replaced twice, and the rear wheels need to be replaced once.

4. Types of brake pads.

According to the composition, ** from low to high, asbestos brake pads are the worst and cheapest, followed by semi-metal brake pads, less metal brake pads, and the most expensive brake pads are NAO ceramic brake pads.

Due to the poor performance of asbestos brake pads, they are not up to standard, so they have now been worn or eliminated. Most cars leave the factory with semi-metallic brake pads, which are the cheapest compared to others, so it has a lower coefficient of friction.

5. Misunderstandings after replacing brake pads.

Some friends will find that there is still an abnormal sound after replacing the brake pads, so what is going on? Don't be nervous, this is a normal phenomenon, the replaced brake pads need to be run in with the car, so there will be abnormal noises after the brake disc rubs, but as long as the run-in will return to normal after a period of time.

How to judge whether the brake pad needs to be replaced, one is to look at the thickness: the total thickness of a new brake pad is generally about the same, when the brake pad brake degree is reached, it must be replaced by the royal family. Then you need to increase the frequency of self-tests and be ready to replace them at any time.

The second is to listen to the sound: if the brake is tapped, it is accompanied by the slightest sound of "iron rubbing iron" or the shouting of the spike, then the brake pads must be replaced immediately. Because the limit marks on both sides of the brake pads have been directly rubbed against the brake disc, it proves that the brake pads have exceeded the limit.

The third is to look at the warning lights: some high-end models are also equipped with brake pad wear warning lights, which can be judged according to whether the brake pads need to be replaced according to the light or not of the warning lights. Generally, the warning light is on to indicate that it is close to the limit and needs to be replaced in time.

<> "How often should the brake pads be replaced, don't be fooled."

Vehicle safety is of paramount importance to every driver, so in addition to some necessary safety configurations on the car, we should also pay attention to regularly replacing some important accessories on the car, such as tires, brake pads, etc., so as to ensure our driving safety anytime and anywhere.

It can be said that the impact of the brake on the safety of the car is very large, if the car brake is broken, it is really difficult to ride the tiger. And car brake pads are very easy to damage, so how often should we replace the brake pads, and what should we pay attention to when replacing them, let's find out together.

The life of car brake pads is difficult to determine with a clear number of kilometers or time, some people say that the brake pads need to be replaced after 30,000 kilometers of driving, but some people say that the brake pads need to be replaced after about four years of driving. In fact, the replacement time of brake pads should be decided according to the use of the car, not according to the number of kilometers.

Automobile brake pads are the most important existence in the braking system, and their function is to squeeze the brake disc when braking to achieve the purpose of braking. So how do we tell if a car's brake pads need to be replaced? First of all, we can judge whether the brake pads need to be replaced according to the thickness of the brake pads, generally the thickness of the brake pads is about one, if the thickness of the brake pads is only one-third left, then we need to replace the brake pads at this time.

In addition, we can also judge whether the brake pads need to be replaced by the sound, when the brake pads become very thin, we will hear a hissing sound similar to iron scraping iron when braking, when we hear this sound, it means that the brake pads are too thin and directly rubbing the brake disc.

Finally, we can also judge whether we need to replace the brake pads by the feel of your feet, when you feel that the brakes are weak or sink when braking, we need to replace the brake pads with new ones. And now the car's braking system has set warning lights, when the brake pads become very thin, the system will automatically remind you that you need to replace the brake pads in time.

So what do we need to pay attention to when replacing brake pads? When we install brake pads, we need to distinguish between inside and outside, and tighten the clamp body. If you don't know how to replace the brake pads, don't replace them at will, so as not to bring potential safety hazards, and be sure to go to a regular 4S shop to find a master to replace them.

In addition, we must choose good quality brake pads when replacing them, and never choose inferior brake pads in order to save money.

In addition to replacing the brake pads regularly, we should also pay attention to the maintenance of the brake pads. First of all, we need to avoid sudden braking, because sudden braking is very damaging to the brake pads, and when we notice that the light is about to go red, we can slowly slow down. Secondly, we need to reduce the number of times we step on the brakes, and finally we should pay attention to the run-in after replacing the new brake pads.

Automobile brake pads are a very important part of the automobile braking system, which is related to our daily driving safety, so we must regularly check the brake pads and replace them regularly.