How many millimeters left on brake pads require replacement?

[AveryAnn]

Brake pads should be replaced when their thickness is less than 0.5cm. Additional information: The following situations also require brake pad replacement: Listen for sounds - if there's a metallic scraping or hissing noise when lightly applying the brakes, the pads must be replaced immediately. This indicates the wear indicators on both sides of the pad are already grinding against the brake disc, showing the pads have exceeded their limit. Feel the braking force - if braking requires significantly more effort, it likely means the pads have lost most friction and must be replaced to prevent serious accidents. Tips to extend brake pad lifespan: Avoid sudden braking - emergency stops cause significant damage to brake pads. Practice gradual braking or use intermittent braking (pump braking) to minimize wear. Reduce braking frequency - develop driving habits that minimize brake use. First use engine braking to reduce speed, then apply brakes for further deceleration or stopping. Downshifting can help achieve speed reduction while driving.