What are these small circles on my rear rotors??

Subscribe
Search this Thread
Jul 27, 2022 | 03:12 PM
  #1  
Coopaloop!'s Avatar
Thread Starter
Junior Member
Photogenic
Liked
Loved
Community Favorite
Coopaloop!
Junior Member
close
  • Join Date
    Jul 2022
  • Posts:
    73
  • iTrader Positive Feedback
    0
  • iTrader Feedback Score
    (0)
  • Vehicle(s) I drive
    E53 AMG wagon
  • Likes:
    34
  • Liked:
    21 Times in 17 Posts
What the heck are they? Wear indicators?






Reply 0
Jul 27, 2022 | 05:18 PM
  #2  
PeterUbers's Avatar
Out Of Control!!
PeterUbers
Out Of Control!!
close
  • Join Date
    Jun 2004
  • Posts:
    13,799
  • iTrader Positive Feedback
    0
  • iTrader Feedback Score
    (0)
  • Vehicle(s) I drive
    2014 E63S; AMS 100 octane ECU dyno tune; EDOK TCU tune; BB intakes; sprintbooster
  • Likes:
    1,775
  • Liked:
    3,229 Times in 2,241 Posts
Looks like something got between the rotor and pad ... road debris
Reply 0
Jul 27, 2022 | 06:18 PM
  #3  
Alan Smithee's Avatar
MBWorld Fanatic!
20 Year Member
Liked
Loved
Community Favorite
Alan Smithee
MBWorld Fanatic!
close
  • Join Date
    Jul 2004
  • Posts:
    1,286
  • iTrader Positive Feedback
    0
  • iTrader Feedback Score
    (0)
  • Likes:
    109
  • Liked:
    397 Times in 264 Posts
They are holes now filled with brake dust; I believe they are some kind of wear indicator. I have them as well.
Reply 1
Jul 28, 2022 | 08:05 AM
  #4  
Coopaloop!'s Avatar
Thread Starter
Junior Member
Photogenic
Liked
Loved
Community Favorite
Coopaloop!
Junior Member
close
  • Join Date
    Jul 2022
  • Posts:
    73
  • iTrader Positive Feedback
    0
  • iTrader Feedback Score
    (0)
  • Vehicle(s) I drive
    E53 AMG wagon
  • Likes:
    34
  • Liked:
    21 Times in 17 Posts
Thank you @Alan Smithee !
Reply 0
Jul 28, 2022 | 08:16 AM
  #5  
gooter80's Avatar
Member
gooter80
Member
close
  • Join Date
    May 2020
  • Posts:
    111
  • iTrader Positive Feedback
    0
  • iTrader Feedback Score
    (0)
  • Vehicle(s) I drive
    .
  • Likes:
    27
  • Liked:
    47 Times in 26 Posts
Those are speed holes. They make the car go faster.
Reply 0
Jul 28, 2022 | 08:41 AM
  #6  
bobblehead's Avatar
MBWorld Fanatic!
10 Year Member
Liked
Loved
Community Favorite
bobblehead
MBWorld Fanatic!
close
  • Join Date
    Jul 2013
  • Location
    Toronto, Ont, Canda
  • Posts:
    2,594
  • iTrader Positive Feedback
    0
  • iTrader Feedback Score
    (0)
  • Vehicle(s) I drive
    go fast grocery getter wagon
  • Likes:
    1,101
  • Liked:
    811 Times in 614 Posts
rotor wear indicator.
Reply 1
Subscribe
 Reply to Thread
Back to Subforum
W213 AMG
View Next Unread
2022 AMG E Sedan/Wagon/Coupe Ordering Guide
Currently Active Users (1)
 
1/1
1 
story-0

New Electric Mercedes-AMG GT 4-Door Coupe Unveiled: 10 Things You Need to Know

Slideshow: Mercedes-AMG's new electric GT 4-Door Coupe trades combustion for software, synthetic noise, and more than 1,100 horsepower.

By Verdad Gallardo | 2026-05-20 20:08:15


VIEW MORE
story-1

6 Mercedes Models That Did NOT Age Well (But Are Somehow Still Cool)

Slideshow: Not every Mercedes design becomes timeless, some feel stuck in the era they came from.

By Verdad Gallardo | 2026-05-12 18:09:07


VIEW MORE
story-2

Manual Mercedes? 6 Times Sindelfingen Let Drivers Have All The Fun

Slideshow: Yes, Mercedes built manual cars, and some of them are far more interesting than you'd expect.

By Verdad Gallardo | 2026-05-02 12:36:58


VIEW MORE
story-3

Mercedes SLR McLaren 722 S Is Extremely Rare Example Modified by McLaren

Slideshow: A one-of-one U.S.-spec Mercedes-Benz SLR McLaren Roadster became even rarer after a factory-backed transformation at McLaren's headquarters.

By Verdad Gallardo | 2026-04-29 11:19:28


VIEW MORE
story-4

8 Classic Boxy Mercedes Designs That Have Aged Like Fine Wine

Slideshow: Before curves took over, Mercedes mastered the art of the straight line, and some of those shapes still look right today.

By Verdad Gallardo | 2026-04-25 12:05:49


VIEW MORE
story-5

Flawlessly Restored Mercedes 190E Evo II Heads to Auction

Slideshow: The 190E Evolution II shows how a homologation necessity became a six-figure collector icon.

By Verdad Gallardo | 2026-04-22 17:53:47


VIEW MORE
story-6

Electric Mercedes C-Class Unveiled: 11 Things You Need to Know

Slideshow: Mercedes is turning one of its core nameplates electric, and the details show just how serious this shift is.

By Verdad Gallardo | 2026-04-21 13:58:06


VIEW MORE
story-7

Mercedes EQS Gets A Major Update: Everything You Need to Know

Slideshow: Faster charging, longer range, and a controversial steer-by-wire system define the latest evolution of Mercedes-Benz EQS.

By Verdad Gallardo | 2026-04-15 10:35:34


VIEW MORE
story-8

5 Underrated Mercedes-Benz Models That Don't Get the Love They Deserve

Slideshow: These overlooked Mercedes-Benz models never got the spotlight, but they quietly delivered more than most remember.

By Verdad Gallardo | 2026-04-13 19:35:45


VIEW MORE
story-9

Mercedes 300D Has Pushed Well Past 1 Million Miles and It Ain't Stopping

Slideshow: A well-used 1991 Mercedes-Benz 300D with more than one million miles is now looking for a new owner, and it still appears ready for more.

By Verdad Gallardo | 2026-04-10 10:05:15


VIEW MORE