
Brake pads do not need to be replaced together front and rear. They should be replaced when the thickness is less than 0.5cm. Brake pads play a crucial role in braking and are composed of a steel plate, adhesive heat insulation layer, and friction block. The steel plate is coated to prevent rust, and the coating process is monitored using a furnace temperature tracker to ensure quality by detecting temperature distribution. Steps for replacing brake pads: 1. Release the handbrake and loosen the hub screws of the wheel needing replacement. Use a jack to lift the car and remove the tire. 2. Remove the tire to expose the brake caliper and disc. Apply lubricant to loosen the screws or nuts if necessary. 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.

As someone with years of experience in car repair, I believe brake pads don't necessarily need to be replaced in pairs (front and rear). Monitoring wear condition is crucial because front wheels typically bear more weight and wear faster during braking, while rear pads wear slower. During each maintenance check, I use a vernier caliper to measure thickness—replace if below 3mm. If both sets are close to this threshold, replacing them together saves time and avoids repeated shop visits. However, if only the front pads need replacement while the rears are still thick, just change the worn pair. Always opt for the same brand of brake pads to ensure balanced performance; mismatched brands may cause uneven braking force and affect performance. Unusual noises or a longer brake pedal travel are early warning signs—never ignore them. Make it a habit to visually inspect every 5,000 kilometers, prioritizing driving safety above all.

As a safety-conscious individual, I advocate for replacing both front and rear brake pads simultaneously for optimal security. The braking system relies on coordinated front-rear performance; if only the worn front pads are replaced while the rears remain new, uneven braking force during emergency stops may cause skidding or loss of control—especially dangerous in rainy conditions. I've witnessed accident cases caused precisely by such front-rear brake imbalance. Therefore, during DIY maintenance, I recommend inspecting wear and generally replacing them in pairs for peace of mind. Additionally, front and rear pads have different lifespans—front pads last about 20,000 km while rears endure approximately 30,000 km—but it's best to replace both when either approaches its limit. Never compromise safety to save money; life is priceless, and regular inspections are crucial.

From a cost-saving perspective, I don't think it's necessary to replace both front and rear brake pads simultaneously. Rear pads wear slower, and it's common for front pads to wear out first. When doing it yourself, remove the wheels and check the thickness: replace only the set that's worn below the safety line, keeping the other set for next time. This can save you about half the cost—replacing rear pads when they're still new is pure waste. But don't delay too long, as uneven wear can damage rotors and end up costing more. Regular inspection habits are crucial; I check the thickness every quarter to ensure it's OK, keeping the budget under control while being practical.


