What Causes Abnormal Noise from Car Tires?

[NovaLee]

Abnormal noise from car tires can be caused by nails or debris puncturing the tire, or brake pads being too thin. Nails or debris puncturing the tire: The noise occurs once per tire rotation, resembling something tapping the ground, with the rhythm accelerating as the vehicle speed increases. If it's a stone, simply prying it off will suffice. If it's a nail, you can drive directly to a repair shop for a tire patch as long as the tire pressure remains stable in urban areas. Brake pads being too thin: Front wheel brake pads on cars generally have electronic sensors, while rear wheels typically do not, but most have mechanical warning indicators. When the brake discs become too thin, they produce a metallic grinding sound. The noise is slight when not braking but becomes louder and more piercing when the brakes are applied. In such cases, you must drive slowly to replace the brake pads. For most wheels, the thickness of the brake pads can be observed through the gaps in the rim. When the estimated thickness is less than 3 millimeters, they must be replaced.