How to Check the Wear Level of Brake Pads?

[DiHannah]

Here are specific methods to check the wear level of brake pads: 1. Check the thickness: Generally, new brake pads have a thickness of about 1.5 centimeters. If they wear down to one-third of their original thickness, or are less than 5 millimeters thick, it is recommended to replace them promptly. 2. 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, causing the wear indicators on both sides to contact the brake disc and produce abnormal sounds. Immediate replacement is necessary. 3. Check the warning: Some vehicle models have brake wear indicators. If the brake pads are excessively worn, the sensor wire will contact 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. 4. Rely on feel: If you notice that the brake pedal feels lighter or that braking requires more effort or is less effective, it indicates severe wear and insufficient thickness of the brake pads, which also requires prompt replacement.

[HazelRose]

I usually start with a few simple methods to check brake pad wear. First, I can directly observe the thickness of the brake pads through the wheel hub gap—new pads are about 10 to 12 millimeters thick, and if they wear down to around 3 millimeters, it's time to replace them. I also listen for any high-pitched metal scraping sounds when braking, which is the built-in wear indicator alerting me. Another method is to feel the brake pedal: if it becomes softer or the travel distance increases, it often indicates excessive wear. When doing a DIY inspection, I park the car on level ground and remove the wheel for a clearer view, but safety is a priority. Regular checks are crucial because severely worn brake pads can increase stopping distance and raise accident risks. I typically inspect them every 10,000 kilometers—this habit has saved me a lot on repairs and keeps me safe.