Have replace rear brake pads 6 times in three months.

Within three months I have replace my brake pads 6 times on the rear I have replace the rear brake pads on the calipers rotors and my brake pads is constantly burning out every week or two so I thought that it was the emergency brakes behind the drum I took them off replace them sprayed all the parts and still have the same issue what is it that I can do

My car has 150000 miles.
My car has an automatic transmission.

Experienced mechanics share their insights in answering this question :
Hi there:

It’s very possible that you have either a warped rotor that is causing your brake pads to constantly rub or the caliper is damaged; causing the same problem. You should have a professional mechanic complete a rear brakes inspection before the issue gets worse and creates a potential safety issue.

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Sometimes, pads wear down too quickly because your calipers don`t work correctly. Calipers push pads against the rotor to initiate braking. If a caliper jams or sticks, then it might leave the pad on the surface for longer than necessary. The pad will wear down more quickly because it stays on the rotor for too long.
Brake pads and shoes are generally thought to be good between 30,000-35,000 miles in urban use. In less demanding situations like highway driving in light traffic, brakes may last 80,000 miles or more.
Brake pads generally last between 30,000 and 70,000 miles, but some can last as long as 100,000 miles. There are many factors that account for this wide range.
Metal fibers can create noisy brakes.

A lot of brake pads have metal fibers in them. If there`s an area on the pad where the metal fibers are too close to one another, this can cause squeaking. The pad will typically wear past this point, and then the squeaking will go away.

You should check your brake pads every 6 months or every 15,000 miles. Most brake pads will wear out in about 25,000 to 65,000 miles, however, the wear and tear on your brake pads depends on a wide variety of factors including your driving style, what surfaces you`re driving on, and the weight of your vehicle.
One of the most common causes of sticking brakes is simple: stuck brake calipers. Most vehicles use disc brakes, which include brake pads, rotors, and calipers. If the brake caliper gets stuck, you`ll notice a sticky sensation in your brakes.
You can replace your brake pads in pairs (the front or the rear) at the same time or separately. If your front brake pads are in need of repair or replacement, your mechanic can fix this issue independently. It`s also important to note that your front and rear brake pads wear at very different rates.
While it might seem more cost-effective to just replace the worn pads, it can be dangerous and unwise in the long run as all four pads should always be replaced together. Regular brake maintenance is essential to ensure your vehicle`s performance and safety on the road.
If the brake pads thinnest pad thickness is at 6mm then what the mechanic most likely recommends is to have the brakes checked in a about 1000-2000 miles to see if they will be needed then. Most brakes pads that are worn to 3mm is recommended for immediate replacement of the pads and resurface or replace the rotors.
It could be that the brakes weren`t lubricated correctly in the service. Or, that new brakes weren`t broken in correctly. The driver may have unintentionally overheated the new brake pads to the point where the brake pads developed a glaze from overheating, which does cause squeaks.
One of the most common reasons for uneven brake pad wear is a problem with the caliper. Pressure to the piston is either not being applied or isn`t being released properly when a caliper fails to engage. Another issue that can come up is when the piston is being ejected, but it refuses to return.
A loss of power can be due to a number of things. You may have air in the system and need to bleed your brake, your pads may be worn too far, your rotor may be too dirty, or your pads or rotor could be contaminated.
One of the most common reasons for uneven brake pad wear is a problem with the caliper. Pressure to the piston is either not being applied or isn`t being released properly when a caliper fails to engage. Another issue that can come up is when the piston is being ejected, but it refuses to return.
A loss of power can be due to a number of things. You may have air in the system and need to bleed your brake, your pads may be worn too far, your rotor may be too dirty, or your pads or rotor could be contaminated.
If your car has rear drum brakes and the brake pedal goes to the floor, the rear brake shoes could be out of alignment. Sediment. Sometimes when new brake pads are installed, sediment can inadvertently be pushed back into the hydraulic system. This sediment can damage the master cylinder.

Relevant Questions and Answers :

the most relevant questions and answers related to your specific issue

Have replace rear brake pads 6 times in three months.
ANSWER : Hi there:

It’s very possible that you have either a warped rotor that is causing your brake pads to constantly rub or the caliper is damaged; causing the same problem. You should have a professional mechanic complete a rear brakes inspection before the issue gets worse and creates a potential safety issue.

I need to speak with Ricardo which was the mechanic on my car in March before booking next appointment. Subject Rear Brake Rotors
ANSWER : Hi Doug. I have forwarded your inquiry to our customer sales department to see if they can see if they are able to put you in contact with Ricardo. If you had work previously done, you should have been sent a direct email from our sales team. You might want to reply to that email directly to expedite the contact process, as this forum is reserved for automotive maintenance recommendations and repair suggestions. Thanks.

Had brake pads replaced and because of new screeching sound they replaced them 2 times and same noises
ANSWER : The brake pads that were installed the first time should of been installed with new or resurfaced rotors. Most noises are from uneven surfaces in the rotor and pads that do not match up causing a squeal or grind noise. To do the brakes and help prevent noises you should replace the rotors and pads with quality premium components.

Rear brake job
ANSWER : Hello, thank you for writing in. These situations are understandably questionable. The service providers at a lot of common oil changing and tire repair centers will quote you for a variety of things that can be updated. This does not always mean you are in dire need for more repairs. If braking seems to be harder, spongy, or takes longer, then you have reason to be concerned. Otherwise, you should check the amount of brake pad material left on the calipers. This can be visually inspected without too much trouble. Remove the wheel and physically measure the amount left, compare them to your vehicle specifications. It is a little early to worry about brake fluid or the rotors. However if the brake fluid is low, the rotors are warped from a hard stop, or there are obvious issues you should look into the system further. Only further inspection will confirm or deny the recommendations. For a second inspection, contact our service department to schedule an appointment.

Changed brake master cylinder, bled 10 times, and the pedal is soft The rear brakes are not locked but close. Truck now running rough.
ANSWER : You will have to bleed the brakes from the farthest location all the way to the master cylinder. There is still air in the lines causing the issue. Check the vibrations on the vehicle to see if the engine mounts are damaged or if the brakes are not releasing causing the engine to run harder than normal to overcome the braking force. If you need further assistance with your vehicle’s brake system, then seek out a professional, such as one from Your Mechanic, to help you.

Low brake pedal and anti-lock brakes are not kicking in.
ANSWER : The brake pedal is working to stop the vehicle, but there may be air in the controller unit causing the ABS brakes to not function. I recommend bleeding the brake system from the farthest location from the master cylinder to the master cylinder including the ABS unit. If the brakes are still spongy after a full bleed, then the controller will need to be replaced. If you need further assistance with your brake pedal being spongy, then seek out a professional, such as one from Your Mechanic, to help you.

Spongy brakes after replacing rear discs, pads and refurbing rear calipers. Bled so many times to no avail!
ANSWER : All four wheels have to be bled starting with the right rear, then left rear, right front, and left front. Inasmuch as air may be trapped as much as 10 feet from the bleeder screw, you have to have a relatively fast, and substantial (in volume) flow of brake fluid during bleeding to expel all air from the system. Generally, 5 to 10 PSI on a pressure system is sufficient. 20 PSI is not necessary. You should use a power bleeder, they are not very expensive for a simple one. If you car is equipped with ABS and/or electronic stability control, you will need a VAG 1551, VAG 1552, or equivalent bi-directional scan tool that is capable of activating the ABS/ESC pump. Activation is necessary to expel air from the ABS components of the system. If you would like to have this checked, a qualified professional from YourMechanic can come to your location to inspect the spongy brake issue and let you know what needs repair.

Horrible grinding sound after recently replaced front and back brakes and rotors.
ANSWER : Hi there. Were there shims installed on the old pads? New shims on the new pads? Missing shims can create noise while braking which is why the antiseize worked for a short time. What brand/level of brake pads did your husband install? Usually, the lowest priced pads are the noisiest. The antisieze that he installed is not recommended to be put on brake components as the high temperatures of these parts can cause the lubricant to run and contaminate the pads and rotors. There are specifically designed brake pad shim lubricants designed to withstand these high temperatures; these are the only ones that should be used if needed. I strongly suggest having a qualified technician perform an inspection to avoid replacing unnecessary parts and a possible safety concern. Your Mechanic has several available technicians that can assist you with a brakes are making a noise inspection.