What Causes the Squeaking Noise from the Left Front Wheel of a Sedan?

[McJohn]

The reasons for the squeaking noise from the left front wheel are as follows: 1. Severe brake pad wear: Normal brake pads are about 10mm thick. When the brake pads wear down to below 6mm, the vehicle may experience tire noise and weak braking. In this case, the brake pads need to be replaced. 2. Foreign objects on the brake disc: If sand, mud, or other foreign objects adhere to the brake disc, friction between them can cause noise. This situation only requires cleaning the brake disc. 3. Deformation of the left front wheel hub: If the car frequently travels on bumpy roads or high-speed sections with potholes, the strong impact can cause the front wheel to deform, leading to noise. For safety reasons, it is best to replace the wheel hub in this case. 4. Wear of the left front tire: Excessive wear of the left front tire or punctures from nails or stones can also cause noise. In this situation, further inspection at a repair shop is necessary. 5. Steering gear failure: If the steering gear malfunctions, it can also cause tire noise. In this case, a professional should be consulted for inspection.