How to Determine Whether Brake Pads Should Be Replaced?

2 Answers
VanPreston
07/24/25 3:39am
To determine whether brake pads should be replaced, you can check the remaining thickness of the brake pads. Brake pads, also known as brake linings, are friction materials fixed on the brake drums or discs that rotate with the wheels. Once the friction material is worn out, the brake pads should be replaced promptly. Otherwise, the metal backing plate will come into direct contact with the brake disc, resulting in loss of braking effectiveness and damage to the brake disc. Steps to replace brake pads: 1. Release the handbrake, loosen the wheel hub screws of the wheel where the brake pads need to be replaced, and use a jack to lift the car and remove the tire; 2. Remove the tire to expose the brake caliper and brake disc, and apply lubricating oil to the screws or nuts that need to be loosened or removed; 3. Hang the brake caliper with a rope and remove the old brake pads; 4. Open the hood and unscrew the cap of the brake fluid reservoir; 5. Install the new brake pads in the correct position.
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VonSawyer
08/10/25 11:12pm
I've been driving for over ten years and have encountered situations where the brake pads needed replacement several times. To determine if it's time to change them, first pay attention to whether there's a continuous squeaking or sharp noise while driving, especially when lightly pressing the brakes. That's likely the wear indicator warning you. Secondly, if you feel the car shaking during braking or notice a significant increase in braking distance, these are signs that the brake pads are wearing out. You can also do a simple check yourself: find a safe place to park, use a flashlight to look through the wheel hub gap, and check the thickness of the brake pads. If they're as thin as a piece of paper, less than 4-5 millimeters, it's time to replace them immediately. Additionally, if a yellow or red warning light appears on the dashboard, it means the warning system is active. Don't think it's a minor issue; delaying can damage the brake discs, leading to more expensive repairs. I recommend checking them monthly or having a mechanic take a look during regular maintenance. In short, safety comes first. Once you notice any issues, don't wait—get them replaced at a reputable auto shop.
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