Rear Brakes and Rotors 2012 GL350
Thread Starter
Senior Member
Joined: Aug 2009
Posts: 289
Likes: 11
From: Central California
GL350
Rear Brakes and Rotors 2012 GL350
I want replace the rear brakes on my 2012 GL350., I noticed the rear brake pads were pretty worn at 67,000 miles and need to be replaced.
Is it best to replace the rotors when I install the new pads and sensor or can I get by with the original rotors. I didn’t notice much wear on the rotors but they do have 67,000 mile on them..
Thanks
Is it best to replace the rotors when I install the new pads and sensor or can I get by with the original rotors. I didn’t notice much wear on the rotors but they do have 67,000 mile on them..
Thanks
MBWorld Fanatic!
Joined: Dec 2004
Posts: 4,268
Likes: 253
if rotors are not bend and surface is ok- just redo the pads and sensors. watch out for kinking the pass-side sensor wire where it fastens to the chassis- i have seen quite a few trucks with the harness being frayed right there.
i always recommend doing a brake fluid flush before you do the pads as the new pads will push the dirtiest of the fluid (the one in the calipers) up the lines and into the abs module. when that happens very often the tiny orifices of the abs get clogged and you are looking at a new abs module ($$$$)
i always recommend doing a brake fluid flush before you do the pads as the new pads will push the dirtiest of the fluid (the one in the calipers) up the lines and into the abs module. when that happens very often the tiny orifices of the abs get clogged and you are looking at a new abs module ($$$$)
MBWorld Fanatic!
Joined: Sep 2005
Posts: 6,189
Likes: 242
From: Albuquerque
'10 CL550, '12 GL550
If there’s a “lip” that you can feel on the edge of the rotor it’s time to replace it. Any lip at all is probably 1 mm and of course there’s one on the back side too and 2 mm is the permitted wear limit. It’s silly to put new pads on a worn rotor, as you can’t use anything but new pads with a new rotor.
Know also that the screws that mount the rotor carrier to the hub are replaced, not reused.
Know also that the screws that mount the rotor carrier to the hub are replaced, not reused.
