How to Check Brake Pads?
2 Answers
Methods to check brake pads: First, observe the thickness of the brake pads. A new brake pad typically has a total thickness of about 1.5cm. When the thickness of the brake pad is less than or equal to 0.3cm, it has reached the wear limit and needs to be replaced. This inspection method requires measuring tools. If no measuring tools are available, replacement is necessary when the brake pad thickness is less than one-third of its original thickness. Automobile brake pads, also known as brake linings, refer to the friction materials fixed on the brake drum or brake disc that rotates with the wheel. The friction lining and friction block bear external pressure to generate friction, thereby achieving the purpose of vehicle deceleration.
I've been repairing my own car for several years, and checking brake pads requires patience. First, find a safe and level spot to park, turn off the engine, and engage the handbrake—it’s crucial. I use a jack to lift the car and secure it with safety stands under the chassis for stability. Then, remove the wheel to directly inspect the brake caliper area. New brake pads are about 10mm thick; if worn down to just 2-3mm, they must be replaced immediately to avoid brake failure and accidents. Some cars come with wear indicators—small metal tabs that emit a squeaking sound when exposed, alerting you. While checking, also examine the brake discs for cracks or grooves to avoid rework later. Always wear gloves and use a brush to clean off dust beforehand. I make it a habit to inspect quarterly, or more frequently if driving aggressively, like regular highway trips. DIY saves around $200 in labor costs—well worth it. Proceed slowly at every step; beginners should watch tutorial videos first to avoid hand injuries.
