How many kilometers will it take to polish the rusty brake discs?

[BraydenMarie]

Brake discs that have rusted will typically become polished after driving approximately five kilometers. Relevant information is as follows: Generally, front brake discs should be inspected every 60,000 kilometers, and rear brake discs every 120,000 kilometers. The maintenance intervals specified by different car manufacturers may vary, so the specific replacement cycle should follow the manufacturer's requirements. If a metallic scraping or squealing sound is heard when lightly applying the brakes, the brake pads must be replaced immediately. This indicates that the wear indicators on both sides of the brake pads are directly rubbing against the brake discs, showing that the brake pads have exceeded their limit. In such cases, while replacing the brake pads, the brake discs should also be inspected. Often, by the time this sound occurs, the brake discs are already damaged with scratches. Simply replacing the brake pads will not eliminate the noise, so it is recommended to replace the brake discs promptly.