How Many Kilometers Do Mercedes Brake Discs Need to Be Replaced?
2 Answers
Mercedes brake discs do not have a specific replacement cycle. When the vehicle's mileage reaches 100,000 kilometers, the brake discs should be inspected. If they are damaged or worn to the limit, they should be replaced promptly. Steps to replace brake discs: Check the wear level of the brake discs. During routine maintenance, brake discs do not necessarily need to be replaced. The decision to replace them should be based on actual conditions. If there are grooves deeper than 3MM on the brake discs, they can be replaced; Remove the front wheel tires. To replace the brake discs, both front wheel tires need to be removed to access the brake discs; Remove the fixed caliper screws. The brake discs are mounted on the front wheel bearings and secured by the caliper. Remove the caliper; Remove the old brake discs. The old brake discs are installed on the front wheel bearings, and rust may form between the bearings and the brake discs. Use a hammer to tap the back of the brake disc while rotating it to ensure all sides are tapped. After several taps, the old brake discs can be removed; Install the new brake discs. Align the holes on the new brake discs with those on the bearings and gently tap the inside of the brake discs with a hammer to ensure they are fully secured on the bearings; Reinstall the caliper. Reinstall the caliper in its original position, tighten the two fixing screws, and check for any abnormal noises when the bearings rotate.
Just helped my brother replace the brake discs on his Mercedes-Benz E-Class. The 4S shop said they normally need inspection after 60,000-80,000 km of driving. Actually, it depends on driving habits - if you frequently brake in city traffic jams, the disc surface might develop deep grooves by 50,000 km. The front discs on my brother's car were worn down by 3mm, causing the steering wheel to vibrate like a phone's vibration mode when braking, and a yellow brake warning symbol popped up on the dashboard. The mechanic measured with calipers and said the original discs had less than 20mm thickness left, so they had to be replaced. We also changed to ceramic brake pads at the same time, costing nearly 5,000 yuan including labor. They recommended checking disc thickness every second brake pad replacement.