You know the rules, a 2011 Mercedes-Benz W164 ML350, the damn brake wear warning light comes on and your heart beats and your wallet shrinks. They are just as easy to replace as all disc brake pads. An exact replacement, the fit was perfect, they are quiet and stop the car as expected. Unfortunately I've only ridden it a few hundred kilometers, but so far it's exactly what I wanted. The only headache I had was that it requires a 9mm hex socket. I didn't have a 9mm hex, only 8mm and 10mm. POOH! A quick run to load for a damn 9mm hex head and back to work. 30 minutes per side and I was back on the ground, the wear indicator light went out (I replaced the wear indicator while driving) and the car was better than new on the show floor.