Something is wrong with my rotor?
Thread Starter
MBWorld Fanatic!
Joined: Apr 2012
Posts: 1,370
Likes: 3
From: Calgary
C63 AMG
Something is wrong with my rotor?
I have recently changed to Akebono Euro brake pads and have noticed that both my front rotor has a rust color ring around it. Any idea why is it?
Senior Member
Joined: May 2002
Posts: 296
Likes: 1
From: Shanghai, China
2012 C200 CGI
thats normal. Unless you have ceramic rotors like on some exotics, they will rust. The only reason your rotor surface doesn't rust is because your brakes are rubbing the surface. If you spray water on your rotor during a car wash and leave your car undriven for 2 days, you'll see the rust starting to form. As soon as you drive it and apply the brake, the rust will be gone again. It's normal, don't worry
Thread Starter
MBWorld Fanatic!
Joined: Apr 2012
Posts: 1,370
Likes: 3
From: Calgary
C63 AMG
thats normal. Unless you have ceramic rotors like on some exotics, they will rust. The only reason your rotor surface doesn't rust is because your brakes are rubbing the surface. If you spray water on your rotor during a car wash and leave your car undriven for 2 days, you'll see the rust starting to form. As soon as you drive it and apply the brake, the rust will be gone again. It's normal, don't worry
Super Member
Joined: Dec 2007
Posts: 580
Likes: 0
C300 Sport 6MT
Interesting indeed. The pad should wipe the entire surface of the rotor, pretty close to the edge. If both front rotors are like that, then it may just be that the Akebono pads have more of chamfer on the edge vs other pads? There's really no way to install the pads incorrectly since everything is a snug fit. Well, at least you'd have other clear signs such as rattling/grinding if they were installed incorrectly.
Many others are running with Akebono pads, so hopefully they'll chime in to confirm or deny. Which specific pads did you buy/have installed?
Many others are running with Akebono pads, so hopefully they'll chime in to confirm or deny. Which specific pads did you buy/have installed?
MBWorld Fanatic!
Joined: Sep 2008
Posts: 1,331
Likes: 9
From: Delaware
2004 Mazda6, 1993 RX7
I doubt the installer made a mistake, unless he specified the pads ... then it's possible he made a mistake, but it may not matter much.
Their are benefits to doing it yourself, like matching the rubbing surface of old vs new pads. If this "rust ring" is new to you, then the new pads have less radial distance to the installed outer pad radius, vs the old ones, which likely have a better (larger) center of pressure.
But this subtle difference may not be significant, unless you track the car and use full lock.
.
Their are benefits to doing it yourself, like matching the rubbing surface of old vs new pads. If this "rust ring" is new to you, then the new pads have less radial distance to the installed outer pad radius, vs the old ones, which likely have a better (larger) center of pressure.
But this subtle difference may not be significant, unless you track the car and use full lock.
.
Senior Member
Joined: May 2002
Posts: 296
Likes: 1
From: Shanghai, China
2012 C200 CGI
Thread Starter
MBWorld Fanatic!
Joined: Apr 2012
Posts: 1,370
Likes: 3
From: Calgary
C63 AMG
Trending Topics
MB World Stories
The Best of Mercedes & AMG
Dubai Tuner Gives the Mercedes G-Class An Entirely New Look
Verdad Gallardo
Six Gift Ideas Your AMG Loving Dad or Grad Will Cherish
7 Craziest Things AMG Gas Ever Built
Verdad Gallardo
New Electric Mercedes-AMG GT 4-Door Coupe Unveiled: 10 Things You Need to Know
Verdad Gallardo
6 Mercedes Models That Did NOT Age Well (But Are Somehow Still Cool)
Verdad Gallardo
Manual Mercedes? 6 Times Sindelfingen Let Drivers Have All The Fun
Verdad Gallardo
Mercedes SLR McLaren 722 S Is Extremely Rare Example Modified by McLaren
Verdad Gallardo
8 Classic Boxy Mercedes Designs That Have Aged Like Fine Wine
Verdad Gallardo
Flawlessly Restored Mercedes 190E Evo II Heads to Auction
Verdad Gallardo
Thread Starter
MBWorld Fanatic!
Joined: Apr 2012
Posts: 1,370
Likes: 3
From: Calgary
C63 AMG
