Minimum Rotor Thickness - Front
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Newbie
Joined: Nov 2021
Posts: 4
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From: North Carolina
2020 GLE 580
Minimum Rotor Thickness - Front
My 2017 GLS450 has 130k miles. The brake pad wear warning light came on. It doesn't tell you if it is the front or rear indicator that is causing the warning, so I pulled both the wheels on the passenger side to check. While I had the front off, I noticed that the rotor minimum thickness was NOT stamped on the hub or on the edge of the rotor. However, I don't think the rear rotors have been replaced and they have the minimum thickness stamped on the hub - 19 mm.
The front rotors on my vehicle which were replaced by the stealership at 91k miles. Does this mean that the stealership did not use OEM rotors?
At what minimum thickness should I replace my front rotors?
The front rotors on my vehicle which were replaced by the stealership at 91k miles. Does this mean that the stealership did not use OEM rotors?
At what minimum thickness should I replace my front rotors?
MBWorld Fanatic!
Joined: Jun 2021
Posts: 1,960
Likes: 531
From: New Hampsha
'17 GLS450, '14 GLK250, Grandpa's Roadster
I find three values, depending on the "xxx" in 166.xxx and options
New 32mm minimum 29.4mm
or
New 36mm minimum 33.4mm
or
New 36mm minimum 34.0mm
New 32mm minimum 29.4mm
or
New 36mm minimum 33.4mm
or
New 36mm minimum 34.0mm
Last edited by John CC; Dec 16, 2023 at 07:22 PM.
