The importance of the brakes in a vehicle cannot be overemphasized. That’s why most drivers get worried and annoyed when they notice squeaky sounds in their vehicles as they apply the brakes. Even after trying to stop their brakes from squeaking, some may notice the noise persists. So I have got a lot of emails about stuff like: why does my car squeak when I brake, how should I stop it, and all that.
Well, no need to worry just yet. Your brakes squeaking do not necessarily mean your brake system is damaged or malfunctioning. There are several factors that may be responsible for this. We are going to dive into that later on in this article,
Brakes are simply mechanical devices that hinder motion. Common types of car brakes include: disc brakes, drum brakes, emergency brakes, and anti-lock brakes. Many modern cars use disc brakes, which are much more efficient. The brakes are installed on all four wheels and are held by the calipers. They function by squeezing against a disc, which slows your vehicle. This is part of the reason why your car slows down when you step on the pedal.
What causes the squeaky sound in my car when I press the brake?
To stop the brakes from squeaking while driving, you need to first understand the various causes. Below is an outline of the common factors that can cause your car to squeak when you apply the brakes. This will help you in streamlining the actual cause of this effect before you take your vehicle to the mechanic’s shop if need be:
When you brake hard
Sometimes it is unavoidable to slam your brakes, like when someone suddenly runs in front of your vehicle or you don’t see the red light on time. These situations can quickly put pressure on your brake pads, which can cause your car to squeak. Barking hard can affect your vehicle’s brake discs and rotors, and wear out your brake pads. You have to be vigilant while driving to reduce the risk of hard braking.
Wrong/poor installation
If brake shoes or pads are not installed properly, they may wear unevenly or cause a squeaky sound when you depress the brakes. For instance, if the mechanic did not properly fix all the springs in the wheel drum, one of them may become loose and squeal or rattle in the drum.
Also, if the mechanic did not properly install the brake shims, they may become loose, causing vibration. Of course, brake vibration is one of the common causes of squeaky brakes.
Rust Brake Rotor
When your vehicle’s brake rotor loses its luster, friction between the rotor and the brake pads increases, which can cause your brakes to squeak. Rust and debris accumulation on your vehicle can cause it to squeak when you hit the brake pedal. The rust or debris needs to be filed off.
New brake pads
There are three major types of brake pads: semi-metallic, organic, and ceramic. Metallic brake pads are widely used in many modern vehicles due to their effectiveness, but they are prone to making noise. If you notice squeaky noises from your vehicle, it may be due to the composition of your brake pads. Another cause is improper placement of new brake pads, which may occur if you fail to tighten the brake mechanism after replacing the old ones.
This can cause your brakes to make noises due to excessive vibration. Therefore, necessary adjustments to your brake system components are needed to kill the noise.
No lubrication on the backing plate
When you fail to lubricate your vehicle’s backing plate and brake caliper, it can cause your brakes to squeak, irritating your ears.
Accumulation of moisture on the brake rotor
After using your vehicle for a while, you might start noticing some squeaking noises when you apply the brakes. Moisture accumulation can cause your brakes to squeal when wet and can also cause your vehicle’s brake rotors to rust over time. However, it can take some time for your brake pads to remove this from your rotor. All you need to do is regularly maintain your brake system, as moisture cannot be prevented from contacting the surface of your brake rotor, except if you stay in a desert.
Worn-out brake pads
A worn-out brake pad is common for vehicles that have been used for a long period. This can cause a squeaking noise from your metallic brake pads. If you are using an old vehicle and notice squeaking noises, it is likely caused by a worn-out brake pad, which can damage your rotor.
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How to fix squeaky brakes?
Now you know what could have caused your vehicle to make that squeak, and you just need to stop it from happening because nobody wants to hear a squeak every time the vehicle comes to a stop; it can be very annoying at times. But you need to be very sure of the cause before going ahead and fixing anything, as you already know that hearing a squeaking noise from your vehicle does not necessarily mean you have a failed brake mechanism.
Here are some great tips to help you resolve this issue:
Apply lubricants to your brake pads
One solution to eliminate that squeaky sound is to apply lubricant to your brake pads. To do this, you will need to remove the brake pads from your brake caliper. You can then apply CRC 05016 Disc Brake Quiet to all contact points to effectively reduce friction. These points include the caliper carrier and the backing plate of your brake pads.
Applying this lubricant can help prevent car brake squeaking, but while you do so, make sure the brake pad and rotor surfaces remain grease-free.
Fix brake pad shims.
Shims function by eliminating anything that can cause your brake pads not to move around smoothly; they are coated with rubber to prevent vibrations that can cause squeaking noise from your brake system. Consider using brake pad shims to reduce squeaking. Some vehicles already have brake pad shims installed out of the box, but you can also install these shims on the reverse side of your brake pads, which can help prevent the squeaking noise made by your brake system every time you step on the brakes.
Replace your brake pads and rotor.
After trying every possible method to stop the squeaking sound from your vehicle’s brakes, I guess it is time to replace your brake pads and rotors. If your brake pads are completely worn out, you will notice a squealing noise because of the high friction between your brake pads and rotor. When your pads cannot make contact with your rotor, the best fix is to replace both components.
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Luckily, replacing damaged brake pads or rotors in your vehicles is quite easy. Here is an outline of a step-by-step procedure that can make the replacement even easier:
Step 1: Equip yourself with personal protective equipment, such as safety goggles and a coverall. Then make sure your car is parked on a dry and level surface. Then mark out the points for your jack.
Step 2: Raise the bonnet and check the brake fluid level in your reservoir. Remove some fluid if the reservoir is full to prevent spillage when you push the brake piston.
Step 3: Unscrew your vehicle’s lug nuts but not completely, and gently jack up your vehicle just enough to make you comfortable working under your car. Then you can completely unscrew the lug nuts and remove your wheels. Make sure the jack is well placed to avoid any unfortunate event.
Step 4: The caliper bolts on your vehicle are easy to locate. You can turn your wheel left or right to help you access the caliper bolts. Use a wrench to help take off the caliper bolts. It would be best if you were careful with this process, as the brake line is also connected to your brake caliper.
Step 5: Now inspect the old brakes. You might notice uneven wear, which can result from a lack of lubrication, worn-out caliper hardware, or worn brake pads. Then remove the old brake pads. You might need to unscrew the caliper mounting bolts on some vehicles before you can remove the rotor, so check your vehicle’s design. To remove the rotor, you will need to remove the brake caliper and the caliper bracket.
Step 6: Thoroughly clean the hub surface of brake dust or rust. You can use a wire brush to do this. This ensures the new rotor rests perfectly on the hub and prevents pedal pulsation.
Step 7: Clean the new rotor, then install it. You might also need to replace the brake hardware, as rusty old parts can cause vibrations that produce squeaking noises. Ensure you apply lubricant to all contact points before installing the new brake hardware.
Step 8: Now, get ready to install the brake pads. Pay attention to the wear sensors in the inner pads of your new brake pads. There are different wear sensor placements for various pads.
Step 9: Inspect your brake caliper and piston. If they are clean, you can properly seat the caliper piston. After that, you can now install the brake caliper, but please ensure that the caliper bolts are not overly tightened. You can start using a socket to tighten the bolts and then finish it off with a wrench. Then check the brake fluid level in your reservoir; top it off if needed.
Step 10: Now pump the brake and ensure that the brake fluid is flowing properly, but do not apply pressure to the point where the brake pedal goes to the floor, as this can damage the master cylinder assembly. You can now place the wheels back and lower your vehicle till the wheels touch the ground. Make you tighten the lug nuts properly.
Step 11: Take your vehicle on a jolly ride, but take it easy on the brakes.
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Can you fix squeaky brakes by yourself?
As a DIYer, you can fix squeaky brakes yourself. As explained earlier, squeaky brakes are caused by cheap replacement brake parts, vibrations, improper or poor installation, or worn parts that need replacement. Therefore, fixing squeaky brakes can be quite simple as it requires greasing some contact points like slide pins, installing brake shims, or getting quality parts and installing them properly.
However, if you are not a DIYer, have a mechanic inspect and fix the leading cause of the squeaky brake noise.
FAQs
How do I get my brakes to stop squeaking?
Various factors can cause squeaking in your brake system. The cause of your brake squeak will determine the method used to fix it. Some might not need fixing at all. However, you can try using the Gunk M725/6 Squeal Medic Brake Squeal Treatment on your vehicle’s brake system to stop the squeaking noise, or you can install a set of shims to help absorb vibrations and allow free movement of your brake pads. Another option is to replace the brake hardware.
After trying all these and still hearing those squeaky noises, you will need to carry out a complete brake job.
Are squeaky brakes dangerous?
Well, a squeaky brake might not be too much of a concern compared to a squealing brake. Squeaky sounds from your brakes can go away after a few stops or after lubricating various contact points in your brake system. It might not necessarily mean that there is a problem with your brake system. On the other hand, if your brakes squeal, it is very dangerous. If you notice this, you will need to get your vehicle checked out immediately.
However, it is safe to determine the actual cause if your vehicle makes any noise whenever you apply your brakes.
What is the cost of fixing squeaky brakes?
It won’t cost much to fix a squeaky brake, though the cost depends on the cause of the squeak. Sometimes it is due to the composition of the brake pad material or the rotor surface, and it can be solved by applying lubricants. But if the brake pads need to be replaced, it might cost about $100 per axle.
How long should it take for new brakes to stop squeaking?
It is expected to take about 2 to 3 hours for your new brakes to stop squeaking. If you still notice this after the time range, check your brake system for any loose components or improper placement of brake parts.
Why do my brakes squeal at low speeds?
The squealing noise your vehicle produces when driving at low speeds is caused by the high-frequency vibrations of your brake pads against the surface of the rotor. When there is high friction between the rotor and your brake pads, vibration cannot be avoided, and this makes your brakes squeal when braking lightly.
How long can you drive with squeaky brakes?
As long as it is just a squeaky sound, you are fine for a while, but you might have difficulty on long trips. However, make sure you take the time to investigate the cause of the noise so it doesn’t escalate.
Is it OK to drive with squeaky brakes?
The short answer is no. It is not okay to drive with a squeaky brake. If the squealing noise is caused by worn-out brake pads or shoes, driving with it will damage other brake components, such as the caliper, brake rotor, and wheel drum.
The squealing noise is a warning sign that tells the driver to inspect the brakes. If you fail to inspect and resolve the issues, it’ll not only cause damage to other parts but will also put you at risk of brake failure.
Final Words
So, for those asking, ‘Why does my car squeak when I brake?’ you are now aware of the various causes and how to tackle this issue. But I will advise that whenever you notice squeaky noises from your brakes, it’s time for an inspection or service. Bear in mind that your brakes are a very important part of your vehicle, and if they are not efficient, you are at a very high risk. So please do not waste time addressing any brake issue that might arise.
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