Flapping Noise When Driving – Causes And Solutions To Overcome

For low-priced popular cars, a flapping noise when driving often occurs. This makes the driver and passengers in the car extremely uncomfortable.

The reason is that the soundproofing ability of these cars is usually inferior, and at the same time, the engine noise is loud, so the passenger compartment is even noisier.

The telltale sign of flapping noise under car when driving is that you will hear a clicking sound coming from under the vehicle when highway speeds.

In the following article, we will outline some causes and ways to effectively overcome the flapping car rattling noise that many drivers most widely apply for your reference!

Is Flapping Noise When Driving Dangerous?

flapping noise when driving
Flapping Noise When Driving

Short answer: Flapping noise when driving is dangerous, depending on each case.

As stated above, car making flapping noise when driving the steering wheel has four leading causes cause going with different levels of danger.

For example, if worn tires cause flapping noise, this is a simple problem. We can solve it quickly without causing too much trouble in traffic.

In contrast, the remaining three causes it is complicated. They cause more dangerous consequences, which damage the car’s life.

If they continue for a long time, it will be straightforward to cause an accident for the driver, significantly when the brake rotor is damaged.

What Causes Flapping Noise When Driving?

“Why does my tire sound like its flapping?” This is a question that many car owners ask. The following reasons most likely cause the car flapping noise:

The Underbody Rubber Liner Is Worn Out.

The underbody rubber liner of cars that often have to go on bad roads such as hilly roads, passes, etc., will gradually become too much to bear, causing wear and tear, causing the car to lose its ability to resist vibration and noise from the driver slowly.

This sign is even more evident when the driver steps on the accelerator to accelerate or brake.

Usually, the impulse will be absorbed by the rubber cushions, damping; if this part is worn or broken, it will cause metal parts to collide and catalytic converters to cause a flapping sound in car.

A suitable rubber gasket in an unloaded state must be in the center of the shaft. In case it is deflected, it means the cushion has been worn.

Vehicle owners should immediately replace the cushions if cracks or stains are found to avoid affecting the passenger seat.

Worn Car Tires

car flapping noise
Shabby Car Tires

We will often hear this knocking sound when the car is running on asphalt.

However, if this buzzing is louder than usual, your right and left tires have some problems, such as abnormal tire wear, damage, scratched tires, etc.

Uneven tire wear is the most common cause of flapping noise under car when driving the steering wheel.

In this case, to maximize the tire’s life, you must perform a tire rotation to eliminate noise for some time.

Besides, the long-term flat tires will cause them to wear, and the side walls are bent too much and cannot create enough traction to turn the vehicle smoothly.

Instead, the rubber will slide to the side more and cause squeaking. You’d better inflate the tires every three months to avoid under-inflated tires. If your tires are cracked, they should be replaced.

Wheels Are Not Correctly Aligned

With your tires still in good shape, the cause of the squealing noise from the tires may lie in the alignment.

Alignment issues lead to the wheels pulling in different directions, making the tires rub against the road, loose wheels, and create squeaks.

Wheel alignment requires specialized equipment to diagnose and repair, so check your vehicle if you notice any abnormalities.

Broken Brake Rotor

Noise is one of the first symptoms often associated with a damaged brake rotor.

Once the brake discs are warped (meaning not completely flat) or severely worn, they can produce a squealing or squealing sound.

Warped brake pads typically have a flapping sound in car, while severely worn brake discs make a rattling sound. However, squealing noises can also originate from worn brake pads.

A damaged car brake rotor can make a variety of noises. Brake pads must be replaced immediately if the user constantly hears flapping noise from tire when applying the brakes.

The brake system can get dirty if the noise is not loud or persistent. Plus, brake noise can be caused by low-quality brake pads.

Solutions To Flapping Noise When Driving 

flapping noise under car when driving
How To Flapping Noise When Driving 

To limit flapping noise when driving passenger side is too loud, drivers can apply the following three standard measures:

Paste The Soundproofing System For The Car 

According to experts, the most effective way to prevent noise is to paste the soundproofing system, which uses specialized soundproofing and soundproofing materials for cars.

With this method, the service workshop will use soundproofing – sound-absorbing materials to stick on the areas prone to sound contamination on the car’s tires, such as the door, ceiling, floor, Tappi, control arm, bonnet, wheel cavity, manual transmission, etc.

Depending on the position, you could stick one or more sound-absorbing stickers so that the soundproofing ability achieves the best effect.

Sound-absorbing materials are materials capable of reducing the amount of noise coming into the vehicle.

There are quite a few materials and pieces of plastic used for soundproofing, and the price and effectiveness of that are also different.

Fitted With Softer Tires For Quick Wear Resistance

In addition to soundproofing measures to reduce noise in the car cabin, many longtime drivers also choose to change the type of tire to bring smoothness when the car is operating and reduce flapping noise from tire.

Tire making flapping noise will be quieter for good tires due to the softer side of the tire.

Tires with a thick surface will be more modest than those with thin tires; the width of the tire and the rubber compound also affect the smoothness of the tire.

According to car experience, the tires that bring a smooth driving feel that many drivers trust include: Turanza, Continental CC66 Bridgestone, and Bridgestone Turanza.

Underbody Coating

There are noises under the car that are not due to poor sound insulation but rock and soil splashing on the undercarriage caused these ones.

So underbody coating is also a solution to help you reduce noise and, at the same time, has many other uses.

Many car owners have thought about underbody coating to reduce car making flapping noise and help the vehicle avoid rust. This approach is considered reasonable, but only in some cases.

Specifically, the underbody coating is only effective if the car owner paints while the undercarriage is still firm and has not been affected by the environment much.

As for the old and used cars, the undercoating only helps to avoid rust, protect the vehicle when traveling on bad roads and lots of gravel, avoid the situation of rock splashes damaging the chassis, and noise reduction is almost impossible.

Therefore, it is best to underbody coating when you buy it.


Through the above article, we hope you understand the reasons for the flapping noise when driving and how to fix it.

In particular, the above causes come from the fact that some parts of the car are broken, so your job is to repair or replace them quickly.

Car owners should bring their vehicles to quality service centers.

Although these shops have a few expensive repairs, the imported replacement supplies are guaranteed to be authentic and safe for the car, drivers, and passenger seats.

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