|How long do M-Class brake pads last? Does 4ETS cause premature brake pad wear? I don't think so. My brakes fared well.
The light indicating brake wear started flickering around 31,000 miles. I was not able to replace the pads right away - in fact, I drove another 7,000 miles before I got to put in new pads. Just in time!
At 38,021 miles the front pads had almost no material left. The rear looked somewhat better.
Parts are somewhat expensive: about $ 160 front, $120 rear.
Follow Author Pete Fagerlin's instructions in case you need to replace the rotors.