Do Brake Pads Need to Be Replaced All Four at Once?
2 Answers
Brake pads do not need to be replaced all four at once, but they should not be replaced individually either. It is best to replace them in pairs. If all are worn out, you may consider replacing all four. Normally, the front two are replaced together, and the rear two are replaced together, or you can replace both front and rear pairs at the same time. Below is an extended explanation: 1. Brake Pad Inspection: Car brake pads are typically replaced every 5,000 kilometers. Inspect the brake linings every 5,000 kilometers, checking not only the remaining thickness but also whether the wear on both sides is even. If any abnormalities are found, address them immediately. 2. Brake Pad Replacement Precautions: 1) Always use original manufacturer-provided brake pads, as they offer the best braking performance and minimal wear when paired with the brake discs; 2) When replacing the linings, always use the proper tools to retract the brake caliper piston. Do not force it back with pry bars or other tools, as this can easily bend the caliper guide screws and cause the brake pads to seize.
Brake pad replacement is an important topic, and I believe the key is to ensure safe driving. It's not always necessary to replace all four at once, but from my experience, replacing a pair—such as the front or rear wheels—is more recommended. This is because during braking, the front wheels bear more force and typically wear out faster. If you don't replace pads in symmetrical positions, it may lead to uneven braking force, especially in emergencies where the car could pull to one side and cause an accident. I regularly check the pad thickness with a caliper; once the wear exceeds 3mm, it's time to consider replacement. Have a professional technician diagnose the wear pattern. Safety should always come first—don't cut corners by replacing just one wheel. Developing good inspection habits can extend the lifespan of your braking system.
