How to Stop Brakes Making Squeaking Noise While Driving (When Brakes Are Not Applied)

Everything in your car should work perfectly. So if you notice that your brakes have started making strange noises while driving and stopping, you need to give it the attention it deserves. Not only will it be distracting from the road, but extraneous noises can indicate a serious malfunction that could lead to tragedy. So if you notice any unusual noises, don't wait - fix it and stop brakes making squeaking noise while driving. Keep reading - and we will tell you how to fix that issue.

Brakes Squeaking When Driving: Causes and How to Fix it?

The brake system in new cars consists of a cast-iron disk sandwiched between two brake pads covered with friction material to increase the resistance. This design of new vehicles allows the pads, disc, or caliper holding them to oscillate, which can produce a squeaking noise. 

construction-of-brakes

The pitch of noise can vary depending on the stiffness and weight of pads and discs, so the vehicle's speed and pressure on the left paddle can change the volume of noise.

In other situations, it might be due to the carelessness of manufacturers that the braking system is creating such noise. In these cases, the noise is dampened, or the frequency is altered.

Brake Pad Noise At Normal Level:

The brake pad often produces a grating noise in the morning when you stop the vehicle the first few times; this happens because the pad has absorbed moisture during the night. This is considered normal, and once the pad dries, the noise vanishes.

How To Stop Brakes Squeaking At Normal Level:

One method is to change the friction material. Finding a good aftermarket material will be difficult but worth your time as it will disrupt the frequency between disc and material that causes the noise.

You will find many magic potions claiming to solve the squeaking problem but most if not all of them are fake. You can apply Teflon coating between the pad and the hydraulic piston that separates them to reduce the noise.

Alternatively, you can reinstall pads using anti-squeal adhesives. Ensure to clean the dirt and corrosion before replacing or reinstalling any part of the braking system.

Dirt, Rust, and Dust - Also Possible Reasons For Your Brakes Squeaking Sound

rusty-brake-disk

In order for your brakes to work perfectly, you need to maximize the contact area of the brake disc with the pad. If a barrier in the form of dirt or dust appears in the way of their contact, the braking efficiency decreases, and as a side effect, the brakes begin to squeak and squeak a lot. To fix this, periodically wash your brakes. You don't have to go to extremes and clean them out with a rag or brush - just hose them down to wash away the surface layer of dirt. If you live in the countryside or often go off-road - then this procedure should be carried out as often as possible, so that the dust does not get clogged in the pads. 

In addition, the brake discs also need to be perfectly smooth and flat in order to work smoothly. So if you start to notice signs of dirt, damage, or rust on them - don't be lazy to replace them. That way you get rid of annoying noise and take care of your own safety

How to Stop a Brake Squeaking When Stopping

The squeaking when you stop the car at low speed happens due to the vibrations occurring by the friction between the rotating disc and pads. The caliper clamps the spinning disc to stop it by creating friction; this friction produces vibrations which lead to squeaking. Other components like grease and shin reduce these vibrations, but factors like mud, dust, road salt, pad material, temperature, and humidity level also add to the squeaking noise. The noise will be higher when you press the brakes, and it will reduce as the vehicle slows down, eventually stopping when the car comes to a stop.

Worn Braking Pads Can Cause Squeaking Sound When Driving

brake-pads-condition

Look carefully at the photo above - it shows two brake pads, the one on the left with the minimum wear and the one on the right with the maximum wear. Inspect your brakes frequently to check the condition of your pads. If they are completely worn out, they will make a horrible squeaking sound as the metal rubs against the metal. Apart from being extremely unpleasant in itself, it is also very dangerous! Worn brake pads lose their stopping power and at the critical moment may simply not work. So check the condition of your brakes regularly, and if you see something wrong with them, change them immediately!

However, If you've replaced your brake pads and the problem hasn't gone away and your brake pads keep squeaking, the problem may be deeper. If the problem persists, check out this material, which gives a more detailed explanation of the possible causes of squeaking brakes even after replacement. 

What Causes New Brake Pads to Squeak?

  • Pads consist of numerous metal fibers, and if some of those fibers are close to each other, they can produce noise.
  • Hard stopping can produce a glaze on pads, thus inducing noise.
  • If the brake system is in the ON position, the pad will stay pressed against the rotor, causing noise.
  • Substandard braking pad material.

How Can You Fix it

  • Look for any loose parts and repair them.
  • You can use dampening paste to create a cushion between different components to stop the vibration.
  • Check if the brake pads are worn out.