All Mercedes manuals recommend replacing the brake pads and rotors in sets. The rotors cannot be resurfaced due to material used in the rotors. The rotors are made of softer materials than most vehicles and wear more and should be replaced as a set.
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Deep grooves that have developed in a worn rotor will act as a hole-puncher or shredder and damage the pad material as it is pressed against the rotor. Be sure to replace the rotors when changing the brake pads.
As a general rule, you should get your brake pads replaced every 10,000 to 20,000 miles to keep wear to a minimum. When it comes to your rotors, you have a bit longer. Your rotors should be replaced between 50,000 and 70,000 miles to keep your brakes in peak health.
You do not need to replace all 4 rotors at the same time, but it is recommended to replace the rotors and pads as a set for each axle front or back at the same time. If the front brakes need to be replaced but the rear brakes are not worn out yet, then you do not need to replace the rear brakes.
Often, Mercedes-Benz rotors need to be replaced every 30,000 – 80,000 miles depending on the factors above. It is always best to reference your Mercedes-Benz maintenance manual for more information.
However, they typically last between 25,000 and 65,000 miles.
If you don`t replace the rotors when needed, you risk brake failure and an accident. The rotor absorbs and dissipates heat when the brakes are applied. The thinner the rotor becomes, the more heat is absorbed. This excess heat warps the rotor.
If your rotors are faulty, they may produce a squeaking, squealing, or grinding sound when you apply the brakes. Warped rotors usually emit a high-pitched squeak, while severely worn rotors tend to make a scraping noise.
Rotors cost between $30 and $75 each. Higher-quality rotors like Duralast Gold, which feature a coated hat and edge and are designed to outperform your vehicle`s original equipment, usually cost a little more. Labor at a shop to replace rotors and pads is approximately $150 to $200 per axle.
Common Causes of Worn Rotors
Panic or emergency braking at high speeds can cause rotor wear. The friction from the brake pad grabbing the rotor can cause high enough heat to result in wear.
Many factors determine how long your rotors will last, but you can generally expect them to require replacing somewhere between 30,000 and 70,000 miles of driving. For an average driver covering 12,000 miles per year, this means that brake rotors may need replacing anytime between 2 1/2 years and six years of driving.
If your rotors are faulty, they may produce a squeaking, squealing, or grinding sound when you apply the brakes. Warped rotors usually emit a high-pitched squeak, while severely worn rotors tend to make a scraping noise.
If your rotors are faulty, they may produce a squeaking, squealing, or grinding sound when you apply the brakes. Warped rotors usually emit a high-pitched squeak, while severely worn rotors tend to make a scraping noise.