How to Determine When to Replace Car Brake Pads

[AriannaFitz]

Methods to determine if car brake pads need replacement include: 1. Observe when the brake pad thickness is only one-third of its original size; 2. Notice if there are abnormal noises when lightly braking; 3. Check if braking response becomes sluggish and braking force weakens. The steps to replace car brake pads are: 1. Jack up the vehicle and remove the tire; 2. Unscrew the fixing bolts on the brake caliper and remove it; 3. Take out the old brake pads and push back the caliper piston; 4. Clean the brake disc mounting bracket and install new brake pads. Car brake pads, also known as brake linings, refer to the friction materials fixed on the rotating brake drum or disc connected to the wheel.

[SanRyder]

After driving for so many years, the most obvious clue that tells me it's time to replace the brake pads is hearing a sharp, screeching noise when braking—like nails on a chalkboard—which is extremely piercing. This sound comes from the small metal tabs on the brake pads signaling severe wear. After driving a bit longer, I also notice the brake pedal feels softer, with a longer travel distance, and the car takes noticeably longer to stop, especially in rainy conditions or during sudden braking—it feels like stepping on a sponge, leaving me with no sense of security. I make it a habit to squat down and check the brake pad thickness every weekend when washing my car. If measured with a ruler, anything less than 3mm means they should be replaced. If I'm too lazy to measure, I can peek through the wheel spokes to see how much pad is left. Doing these checks regularly helps prevent sudden brake failure on highways, protects the brake discs from excessive wear, and saves a lot on repair costs.

[VanLaura]

As someone who frequently tinkers with cars, I believe there are several key details to watch for when determining whether to replace brake pads. First, listen for sounds—if you hear continuous squeaking or humming when braking, it's likely the wear indicator kicking in, signaling that the pads are thinning. Second, check the thickness—use a simple tool like a chopstick to estimate near the brake disc; if the remaining pad material is only about 2-3mm thick, it's nearing the end of its life. Don't underestimate this—delaying replacement can lead to the brake disc being damaged by the metal backing, which is both troublesome and costly to repair. Also, pay attention to braking response—if you feel the pedal sinking or slight vehicle vibration, it indicates insufficient friction. I recommend a quick inspection every 5,000 kilometers or so, especially before long trips, to ensure stable braking performance and avoid unexpected issues on the road.

[Genesis]

For novice drivers, determining whether to replace brake pads is actually quite simple: First, check if the brake warning light on the dashboard is illuminated—a flashing yellow light should raise caution. Pay attention to any sounds while driving; if you hear squeaking or low grinding noises when braking, especially noticeable during slow starts, it means the pads are nearing the end of their lifespan. Additionally, consider the mileage—generally, after 30,000 to 40,000 kilometers, brake pads may be worn out. During each maintenance service, remind the technician to check them as a routine, ensuring both peace of mind and safety.