Why does the brake squeak when turning?
3 Answers
The causes of brake noise when turning include: poor quality brake pads, foreign objects in the brake disc, severe wear of the brake disc, severe wear of the brake pads, rust on the brake disc, etc. Below is a detailed analysis: Poor quality brake pads: If the brake pads installed are not from a reputable manufacturer or are of inferior quality purchased by the owner, the overly hard material can cause a squeaking sound when braking and may also damage the brake disc. Therefore, it is advisable to replace the brake pads with original ones at an authorized 4S shop. Foreign objects in the brake disc: When driving on rough roads, wheels can easily fling stones or other foreign objects into the brake system. Unlike drum brakes, disc brakes can trap stones between the brake pad and disc, causing noise when braking. Severe wear of the brake disc: Sometimes, the brake disc can be directly scratched by foreign objects or hit by other objects, leaving pits on the surface. When the brake pads rub against an uneven brake disc, it can also produce a squeaking noise. Severe wear of the brake pads: After prolonged use, brake pads wear thin due to continuous friction. Overly thin brake pads not only reduce braking effectiveness but also harden the material, leading to noise when braking. Rust on the brake disc: Years of exposure to wind and rain can cause the brake disc to rust. However, this is not a major concern, as stepping on the brakes a few times will wear off the rust layer on the disc.
I often encounter car owners asking about the squeaking sound when braking during turns. During turns, the tires bear uneven forces, causing the friction points between the brake discs and pads to shift, which leads to the noise. The most common cause is worn brake pads, especially when the outer pads have poor contact, resulting in metal-on-metal squeaking. The centrifugal force during turns can also cause tire side-slip, exposing accumulated debris. Alternatively, the brake discs might have slight rust, especially if water remains after washing. Don’t forget to check the suspension system—if the struts are unstable, the wheels may tilt during turns, increasing friction. I recommend not ignoring this issue. Visit a professional shop as soon as possible to measure pad thickness, clean dust, and ensure the brakes remain responsive—safe turning depends on it.
I used to hear squeaky brakes when turning, which scared me. Turned out the brake pads were mostly worn out, with metal scraping against the rotor like nails on a chalkboard. During turns, the car would sway, shifting the friction points and making the noise even more piercing. Small stones or mud stuck in the gaps could also cause this. After replacing the pads, peace was restored. Regularly checking brake health is key—don’t wait until the noise gets worse, as it damages the car and poses risks. Find a reliable mechanic for an inspection; spending a little now ensures safety later.
