Why There Is A Low Rumbling Sound When Braking?

Though each and every one of us loves buying new cars after a while, those cars turn out to be a depreciated investment as and when problems related to the cars start occurring. Whenever you hear an unusual noise coming from your car. You need to pay attention to it immediately to avoid further complications. One of such noises you hear is a low rumbling sound when braking.

This article will discuss everything related to this problem of rumbling sound while braking.

What Are The Causes Of The Low Rumbling Sound When Braking?

If you hear a rumbling sound when braking, it’s usually caused by worn brake pads. Your brake pads can Sometimes wear unevenly because of poor alignment or bad bushing. There are two main reasons behind it:

1. Worn Brake Pad Or Brake Shoe

Most times, whenever your car makes a low rumbling sound when braking, it could be a result of a worn brake pad or brake shoe. However, if the noise stems from the above reason, it can result in too much heat build-up from friction within the braking system because when these parts wear out, they can no longer dissipate heat.

You can liken a brake pad to a bar of soap. You’ll use it all one day, and it won’t cost you much to get a new one. But, if you fail to replace them, your brakes will only worsen to the grinding point, thereby costing you a lot of money, especially when you continue to use them. To avoid excessive wear, you must replace brake pads and brake shoes as soon as possible.

2. Sticking Caliper Or Wheel Cylinder

If your vehicle has a sticking caliper in its brake system, it can constantly jam every brake pad against the brake rotor, causing a low rumbling sound when braking.

Again, As soon as the rotor disc touches any part of the brake caliper, it will cause a noisy grinding sound. However, brake grinding occurs in a drum brake system if a stuck wheel cylinder frequently compresses the brake shoe against the brake drum.

Therefore, these are the 2 most important reasons behind the cause of the low rumbling sound when braking.

How To Fix The Rumbling Sound When Braking?

You need to change the brake pads alone, to stop them from grinding your rotors down to a tissue. Replace your brake pads as soon as possible to prevent damage to your rotors. If you insist on driving as your vehicle makes a low rumbling sound when braking, the worn brake pads could damage your brake rotor too, causing you to pay more for a brake pad replacement and a rotor replacement.

A quick fix to a vehicle that makes a rumbling sound when braking is to lubricate the brake calipers, and this works only if the brake pads are not worn. If your vehicle features a disc brake system. You will have to bring out the brake caliper and apply grease on its slides. If it is a drum brake, you’ll have to grease the scrubbing points of the wheel cylinder. If the problem persists, then you can change the parts.

Whenever you compress the brake pedal and hear a low rumbling sound, it could mean that the rotor disc and part of the caliper are starting to touch themselves, which happens whenever your brake pads wear out.

Frequently Asked Questions:-

1. Why Does My Car Make a Rumbling Noise When I Brake?

Rumbling noise is caused while braking from worn-out brake pads. Making the calipers continue pressing against the rotor and causing damage. When this happens, your rotor gets warped, thereby leading to brake thumping or on-off touch when you brake. You could also have undersized brake parts, which force the pads or caliper into constant friction or activities that produce frustrating brake rumbling sounds.

2. Why Do My Brakes Rumble When I Stop?

The most obvious reason is a bad brake rotor. If your rotor is in a poor state, it can force the brake pedal to rumble when you stop. In addition, if the rotor is excessively scarred, warped, cracked, or rusted, it can have an uneven grabbing of brakes, thereby creating a pulsating feel when applying the brakes.

3. Can I Hear Brakes When Braking?

You can hear a noisy grinding sound when braking as long as a touch occurs between the rotor disc and a caliper component that happens once your brake pads begin to wear out or become completely worn out. Sometimes, it could be caused by a faulty brake disc that needs replacement.

4. What Do Faulty Brake Pads Sound Like?

A faulty brake pad creates a metallic grinding sound because the backing plate has started rubbing against the rotor or drum. Meanwhile, most brake pads feature a metal wear indicator, which forces itself on the rotors once the brake pads become worn out, thereby producing a grinding noise or squealing sound.


If you hear a low rumbling sound when braking, it’s usually caused by worn brake pads. Your brake pads can Sometimes wear unevenly because of poor alignment or bad bushing. Replacing your vehicle’s brake pads will fix this issue.

We hope the above-mentioned information will be helpful to all the readers. If anybody’s doubts persist feel free to comment in the comment section below. We’ll try to solve your doubts as soon as possible.

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