The brakes may begin to squeak at about the 50 percent wear point. This is due to the size and material used for the brake pads and rotors. The brake rotor surfaces become uneven, causing a lip to form at the outer edge. This will generally require replacement of the rotors when the pads are worn (pad life varies depending on driving style and terrain).
Squeaking/Worn Brake Pads May Require Rotor Replacement Also on Mercedes-Benz S500
Average mileage: 140,833 (91,000–164,000)
19 people reported this problem
1995 Mercedes-Benz S500 141,000 mi, Visitor
Squeaks really loud now.
2003 Mercedes-Benz S500 164,000 mi, Visitor
Brakes squeal with 50% left on pads. MBZ are a piece of crap. Own two and will never, never purchase one again.
2000 Mercedes-Benz S500 143,000 mi, Visitor
replaced pads and rotor
I have changed my brake pads and rotors and when I step on the brakes they still continue to sound like a bus. I don't know what else to do at this point.
Front rotors are drilled and usually should be replaced instead of turned on a lathe. Aftermarket rotors and pads are not expensive and have been better for me than the factory parts.