What Causes the Squeaking Noise from the Rear Wheels of a Car?

[DiZoey]

When car tires come into contact with the ground, they generate various levels of noise due to road conditions, uneven surfaces, driving speed, tire pressure, and other factors. Therefore, no matter how perfect a car is, it cannot completely eliminate the noise produced between the tires and the ground during driving. Below are specific reasons for the squeaking noise: Suspension issues: The car's suspension includes links, springs, shock absorbers, and stabilizer bars. If any of these components malfunction, such as loose bolts, it can cause abnormal noises due to shaking. Brake system problems: Issues like excessively thin brake pads, uneven wear between the brake disc and brake pads, or faults in the brake caliper, master cylinder, or wheel cylinder can lead to abnormal noises in the braking system, typically manifesting as sharp and continuous sounds. Loose engine belt: This can also cause a squeaking noise. In such cases, you can try pinching the drive belt with your fingers and twisting it—ensure the engine is cool during this operation. The twist angle should generally be less than 90 degrees; otherwise, the belt tension needs adjustment. Aging components: This issue may occur in areas with rubber parts. Pay special attention to the engine mount rubber cushion. If it hardens, ages, or cracks, it can increase car vibration, cause steering wheel shaking, and amplify noise levels.

[DiJames]

I've found that squeaking noises from the rear wheels of a car usually have several common causes. The most frequent one is worn brake pads - when the metal indicators on the brake pads come into contact with the brake discs, they produce that high-pitched squeal to remind you it's time for replacement. Wheel bearings can also be problematic; old or insufficiently lubricated bearings may squeak while rolling, especially more noticeable during turns. The suspension components deserve attention too - for instance, aged rubber bushings can create rubbing sounds on bumpy roads. Loose wheels can also cause noises; try gently shaking the wheel to check for looseness. Tire abnormalities like uneven wear or foreign objects stuck in the tread may also lead to noise. It's recommended to find a safe place for low-speed test driving while paying attention to changes in the noise location. If the issue persists, it's best to visit a repair shop for thorough inspection to avoid potential safety hazards.

[DiAnastasia]

I've encountered the issue of rear wheels squeaking quite a few times. The most likely cause is brake-related problems. If the brake pads are severely worn after prolonged use, the metal shims inside will squeak when they come into contact with the rotor. Brake calipers that have accumulated dust or rust can also cause unusual noises. Another potential issue is worn wheel bearings – if they don't rotate smoothly, they'll produce continuous noise. You should also check for loose components in the suspension system, such as aging connecting rods. Try gently pressing down on the car body to see if any unusual sounds occur. I also recommend a simple DIY check: find a flat surface, turn off the engine, and gently shake the rear wheels to see if they're loose, or drive at low speed to identify the source direction. Addressing it early can prevent minor issues from turning into major repairs – don't skimp on these inspection costs.

[White]

Rear wheel squeaking is mostly caused by brake pad issues. When the brake pads wear down to a certain extent, they will remind you with a squeaking sound; worn or insufficiently lubricated wheel bearings are another common cause, producing a rattling noise when rotating; aging rubber parts in the suspension can also generate noise. Don't ignore these minor issues—get them checked early to avoid high costs. You can perform a preliminary inspection yourself: test drive at low speed to locate the noise, or shake the wheel to check for looseness.