Horrible grinding sound after recently replaced front and back brakes and rotors.

My husband replaced our front and rear brake pads and rotors a couple of months ago. After the replacement there has been such a horrible grinding noise any time we brake, especially when we brake gradually. He took the front brake pads off and put anti seize lubricant on the back of the rotors and put more between the calipers and the brake pads. That stopped in for a couple days, and now the sound is back. We don't know if it is now just coming from the back or if it both the front and back. I don't want to ruin anything by letting this continue, plus it is extremely annoying.
Experienced mechanics share their insights in answering this question :
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.

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Even if you replace the pads or rotors, bits of debris can get caught up during the repair process. This should go away as you continue to drive your car. If you`ve only had your brake pads replaced and not the rotors, the grinding noise could be coming from worn-out rotors.
You may notice a grinding noise after you get new brake pads and rotors. This does not necessarily mean your pads and rotors are defective. Rather, your pads and rotors may be stiff, and you`ll need to break them in.
However, after replacing your brake pads and rotors, there will be an initial “breaking-in” period, so hearing some grinding isn`t necessarily a cause for concern. It`s pretty standard for a mechanic to grind down rotors ahead of time to lessen this, but grinding sounds might be more noticeable if they didn`t.
You might notice a grinding noise when driving at low speeds. The most common causes are problems with your continual velocity joints, brake pads, wheel bearings or alternator. Examining each one of these parts can help you pinpoint exactly where the issue is.
After that first 500 miles without overheating the pads, your new brakes will be ready for a few harder stops. What about grinding sounds? Grinding sounds are bad. Definitely have those brakes checked if you hear grinding sounds when you use your brakes.
The metal-on-metal grinding noise you hear is the steel part of the brake pad grinding against the brake rotor, and it`s not good. You need to get a brake pad replacement immediate when they are shot before they also destroy your rotors or brake calipers, which can be a very expensive repair.
The noise is just a slight rubbing because your old rotors have been worn in the shape of your old pads, and the new pads don`t match them exactly. But they`re perfectly safe, and your brakes will stop the car just the way they`re supposed to.
One possible cause is debris or dirt stuck in the brakes, which can create friction and lead to a grinding noise. Another potential reason is a misalignment of the brake calipers, causing them to rub against the rotor instead of smoothly pressing against it.
If your rotors are faulty, they may produce a squeaking, squealing, or grinding sound when you apply the brakes. Warped rotors usually emit a high-pitched squeak, while severely worn rotors tend to make a scraping noise.
Driving with grinding brakes is simply not safe. Brakes are a critical component of safe driving and should not be overlooked. If your brakes start to fail: Don`t drive any further.
As the damage worsens, a faulty CV can produce a loud click, popping, or clunk sound. When making a tight turn at a low rate, frequent brake noise at low speed (caused by damage to the outer CV joints) causes grinding noises. A bad CV joint also causes a vibration in the steering wheel and the car`s floorboard.
If you notice your car making a grinding sound when it accelerates, your issue is likely to do with your transmission, a problem with your differential, a bad wheel bearing, a damaged CV joint, or a worn engine/motor mount.
Driving with grinding brakes is simply not safe. Brakes are a critical component of safe driving and should not be overlooked. If your brakes start to fail: Don`t drive any further.
The most common reasons for you hearing a grinding noise when you brake is likely because you have poor quality brake pads, worn brake pads, worn shims, worn brake rotors, faulty wheel bearings, debris stuck in brakes, insufficient lubrication on brake parts, or you`re simply not driving your car enough, allowing the …
Driving with grinding brakes is simply not safe. Brakes are a critical component of safe driving and should not be overlooked. If your brakes start to fail: Don`t drive any further.
One possible cause is debris or dirt stuck in the brakes, which can create friction and lead to a grinding noise. Another potential reason is a misalignment of the brake calipers, causing them to rub against the rotor instead of smoothly pressing against it.

Relevant Questions and Answers :

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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.

I had front brakes and rotors replaced and now my brakes are squeaking and grinding when I come to a stop. I just had front and b
ANSWER : Hello, thank you for writing in. A squealing noise typically happens because there is a vibration between the pad and the rotor. This is likely pertaining to the caliper that moves the brake pad back and forth. While they may not be damaged, broken, or faulty, they can become misaligned and cause a squeal. Often a shim can be done or an adjustment done to resolve the issue. You may also need to grease the guide pins that the calipers move along. For more help and a proper inspection, contact our service department to schedule an appointment.

My car brake pedal vibrates while braking….so do i need to get front rotors replaced or rear rotors replaced? What are charges?
ANSWER : A pulsating brake pedal can be caused by front, rear, or all 4 rotors being warped or out of round. Typically when it’s the front rotors, you will feel the vibration in the brake pedal and the steering wheel. When the rear rotors are warped, you may feel it in the brake pedal and more in the seat, feeling it in your back side. Whether front, rear, or all 4, if the rotors are replaced, it’s a good idea to replace the pads as well.
The best approach would be to have a certified technician inspect the brakes to determine where the pulsation is coming from. An accurate estimate for repairs can be given at that time.

Could you give me an estimate for the following work on my 2006 Toyota Tundra sr5? Replace front brake pads and refinish both rot
ANSWER : Hi there. On your list of items include a few things that our mobile mechanics are not able to offer; such as the wheel alignment and machining work on the brake rotors. You might want to contact a local brake and suspension shop that can complete everything in house.

Replaced front brake pads on bad rotors, also replaced calipers from junkyard.
ANSWER : Hello. From what you describe it would appear that your rear brakes may have seized up. This can be caused by a few different reasons. If your brakes were grinding and you reused the same rotor it may be possible that the brakes are overheating due to excessively thin or worn rotors. Overheated brakes can result in brake fluid boiling, which can cause all sorts of pressure problems in the brake system. This is more likely if only the front brakes were bled when the system was opened up, and a possible cause for the swishing fluid sound you heard as the problems occurred. A careful disassembly and inspection of both the front and rear brakes could determine what the cause could be. I would recommend having a professional technician, such as one from YourMechanic, come to your location to determine what the cause of the seized brakes may be](https://www.yourmechanic.com/services/brakes-steering-and-suspension-inspection).

I purchased performance brake pads and rotors however I only have a front pair of rotors.. 2014 Ford Mustang
ANSWER : Hi there – while there may be a very slight performance gain to be had by also replacing the rear rotors, you will be fine without doing so unless the rear brake rotors are severely grooved or otherwise worn. The rear brakes contribute 40% or so of total stopping power, so optimizing front brake performance will accomplish the greatest improvement. For professional assistance with this repair, I recommend brake replacement performed by a mobile, professional mechanic, such as one from YourMechanic, who will come to your location, diagnose this problem, and give you an accurate assessment of damage and cost estimate for repairs.

EPC light on 2004 Jetta. Code said brake switch faulty, but brakes lights worked. Replaced brake switch, now no brake lights.
ANSWER : Hi there. The first thing that pops in my mind beyond of what you have listed is perhaps the electrical harness attached to the brake switch. Perhaps the harness itself is damaged or you have an exposed wire, loose ground wire somewhere. You might want to have a professional mobile mechanic come to your location and complete a brake lights not working inspection to help you diagnose this issue.

Brake calipers needing replacement after brake pads and rotors were replaced?
ANSWER : I think you have it backwards. The pads and rotors do not cause bad calipers, but a sticking or binding caliper can cause the pads to wear excessively and cause the pads to dig into the rotors. The calipers may not of been binding until the caliper pistons had to be pushed back to install the new pads. It would be recommended to have the brake system flushed after replacing the calipers, pads, and rotors so the system has all new fluid. A certified technician from YourMechanic can come to your car’s location to perform any needed repairs with your brake system.