Most of the car brakes use an iron cast disc squeezed between two brakes pads lined with friction materials. Some high ends cars usually use carbon-ceramic discs or even special tungsten carbide coating on the disc. Under the right condition the disc, the pads, and the caliper will be mounted in such a way that they vibrate in a parallel manner at a single discrete frequency. The speed of the vehicle and how hard you press the brake are only responsible for changes in the sound as the pitch is controlled by the stiffness and mass of the pad and disc.
Squeaking brake pads is unsatisfying to hear the weird sound. It is not always for panic. According to us, whenever brakes squeak when stopping slowly it’s best not to ignore it. Below there are causes behind this squeaking sound.
Why Brakes Squeak When Stopping Slow?
The reason behind the brakes squeak when stopping slowly is due to the old glazed rotors of the brakes. If you want to avoid the squeaking noise at least clean the rotor properly from the car repair shop without installing the new one.
There are six causes behind the brakes squeaking when stopping slowly
1. High Metal Content
It is normal to have metal in the brake pad but it is abnormal to have high metal. This high metal drag on the rotor leading to the squeaking noise. So next time when you going to buy a brake pedal always buy a high-quality one. Though high-quality one can be costlier and bring the car to stop it can also help from an avoidable accident that may cause you to eventually spend more money than buying high-quality brakes. The brakes have a lifespan of 30000 to 40000.
Always buy the brake of organic fiber such as rubber to avoid the squeaking sound and also it takes care of the issue of your high metal brake pad of car.
When a vehicle is exposed to the rain or moisture climate overnight, the moisture accumulates on the rotor. Thus it leads to the squeaking noise. The humidity outside can accumulate rust over the rotor. When the rotor revolves, the brake pad scrap over the rust. As a result, the squeaking noise occurs when the rust gets trapped in the edge of the brake pads.
You can easily avoid this squeaking noise by parking the car under the climate control garage.
3. Drum Brakes
When you match the brake pad, you have noticed that a squeak noise is coming from the back of the brake pedal. This happens due to less lubricant in the drum brake and it indicates that it is time to lubricant the drum brakes. The metal may begin to rust if there is not enough lubricant at the point of contact. This lead to the sound of a squeak.
This can be fixed by buying the best quality lubricant by contacting mechanics.
4. Thin Brake Pads.
You have heard the squeaking noise when brake pads become thin or worn out. As a result, you will have to change the brake pads. Most of the car is attached the indicator with the brake system to warn drivers when their thin pads need to be replaced.
When the brake pad gets glazed, it can form a squeaking sound. If brake calipers become glazed, the brakes can become partially applied. As a result, it leads to excess heat and friction, causing the brake pad to become hard and glaze. Glazed brakes cause the stopping action of your brakes to reduce and equally lead to high pitch sound.
6. Braking Hard
Braking excessively hard cause your brake pads to wear down more quickly than it should because it causes heat to distort your brakes disc and rotors. When this happens, your car brakes squeak when stopping slow.
How To Fix The Squeaking Brakes?
We can easily resolve the issue of the squealing brake pads by damp out the noise or simply change the resonant frequency of the whole arrangement until it stops making such squealing sound. Below there is a detailed explanation
1. Friction Material
The first solution to fixing the squeaking brake pad is by using different types of friction materials. The maker has made different types of brakes pad according to priority in the market such as grip, noise, pad life, price, and dust creation. These types of brake pads cost about 50$ to 100$. If you want a very budget-friendly brake pad, you can use Teflon materials. But still changing the pad does not overcome the problem.
2. Ceramic Based Pads
It is another way to resolve the issue by replacing the brake pad with a high-end ceramic pad. Since the different model of car that has different characters which solve the problem of squealing noise. Some calipers do not come with adequate extra travel in the piston bore to let in the shimming without causing the brakes to drag especially when your brake pad is new and worn. When this happens you just bring the similar decoupling by simply coating the back face of the pad packed with the hot temperature brake grease.
This won’t fix the problem permanently as water and dirt will wash it away over time. The brake system is used simply to, make a car slow down so always remember that simply using aerosols is a simply bad idea onto the pad friction materials.
3. Anaerobic Adhesives
Another reason for squealing noise can be due to the sticking of the brake pad backing plate to the caliper housing or the piston. Thus the system resonant frequency gets out of the range that makes a squealing noise. Superglue won’t work properly so instead of that anaerobic adhesives are used because they cannot withstand in front dirt, water, heat that has to experience daily.
The anaerobic adhesive is the toothpaste-like texture simply add to the piston. First, clean the pad or use a fresh pad instead. Clean the spots on the piston and caliper where the pad backing plates touch. Now apply the adhesive and reassemble the brakes, in the same manner, you open them.
This is the final way to fix the problem. If you aren’t confident to do this procedure, take the car to some professional mechanics. Because you cannot take the risk of driving with the squealing brakes pad which will lead to an accident.
How Much Does It Cost To Change The Squeak Brake?
The average cost of master cylinder repair is usually between 200$ and 300$. But it can be more depending on the fix. If individual wheel cylinders need to be replaced, the cost will go up. The repair price for an entire brake job can run you 750$ or more.
Squeaky brakes are the important safety issues that you have to take care of by checking once or twice in the year whether it is functionally working properly or not. Otherwise check the car of the brakes during a routine service checkup. Inspect them properly by you or auto mechanics to know the issue of squeaking.