2014 ML350 brake replacement
Maybe you can bring in your own performance parts and save some




The wear limit is 2 millimeters ... find a metric tape or ruler and observe what one millimeter is. Then feel to see if you have a lip at the outer edge of your rotor ... if you do it’s very likely 1 mm and of course there’s another one on the back side of the rotor. Even if you’re slightly under the limit, your rotors will still be worn over the limit before a new set of pads is worn out. You can measure with a caliper of course, but you’ll need one that will “go around” the lip.
Basically, brake work on these is pretty much always new rotors plus new pads. This is by design and yes it’s different than chebbies.
You can save a LOT of $$ doing this work yourself, but you do need some big tools. You can obtain genuine parts much cheaper from Merc dealers selling online, and in fact brake rotors are parts included in Mercedes’ “ Star Parts” program, which are economy versions of the real things. Dealer example I use because it’s close: mbdirectparts.com
Your 2014 is a W166 of course.
Last edited by lkchris; Sep 14, 2018 at 11:31 PM.




The wear limit is 2 millimeters ... find a metric tape or ruler and observe what one millimeter is. Then feel to see if you have a lip at the outer edge of your rotor ... if you do it’s very likely 1 mm and of course there’s another one on the back side of the rotor. Even if you’re slightly under the limit, your rotors will still be worn over the limit before a new set of pads is worn out. You can measure with a caliper of course, but you’ll need one that will “go around” the lip.
Basically, brake work on these is pretty much always new rotors plus new pads. This is by design and yes it’s different than chebbies.
You can save a LOT of $$ doing this work yourself, but you do need some big tools. You can obtain genuine parts much cheaper from Merc dealers selling online, and in fact brake rotors are parts included in Mercedes’ “ Star Parts” program, which are economy versions of the real things. Dealer example I use because it’s close: mbdirectparts.com
Your 2014 is a W166 of course.
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