What is the Replacement Interval for Brake Pads?

[DiJesse]

Brake pads should generally be replaced every 30,000 to 50,000 kilometers. Typically, the replacement interval for brake pads is determined by their service life. Front brake pads usually need replacement every 30,000 to 50,000 kilometers, while rear brake pads should be replaced every 60,000 to 100,000 kilometers. However, this is not a fixed value and may vary depending on different driving environments and individual driving habits. Below are some methods to determine when to replace brake pads: Check the thickness: New brake pads are usually about 1.5 centimeters thick. If they wear down to one-third of their original thickness, meaning less than 5 millimeters, it is recommended to replace them promptly. Listen for sounds: If you hear a metallic scraping noise when braking, it may indicate that the brake pads have worn down to their minimum thickness. The wear indicators on the sides of the brake pads may be touching the brake disc, causing the noise, and immediate replacement is necessary. Check the warning: Some vehicle models are equipped with brake wear indicators. If the brake pads are excessively worn, the sensor wire may come into contact with the brake disc, causing a change in resistance and generating an electrical current. This triggers a signal, and a brake pad warning light will appear on the dashboard.

[BellaRose]

Actually, there's no fixed schedule for changing brake pads. I see a lot of them every day as a mechanic. Some cars wear them out by 50,000 kilometers, while others can go up to 100,000 kilometers with plenty left. It all boils down to three key points: First is the thickness—new pads are usually 1.5 cm, and they must be replaced when worn down to 3 mm. Second is the sound—a metallic squealing noise is like an alarm going off. Third is the feel—if the brake pedal vibrates or sinks deeper when pressed, get it checked immediately. Last week, I saw a BMW owner who stubbornly drove until sparks flew, ending up damaging the brake discs and wasting an extra 2,000 bucks.