Go Back  MBWorld.org Forums > Mercedes-Benz AMG Vehicles > SL55 AMG, SL63 AMG, SL65 AMG (R230)
Brake Pad replacement - True or false question >

Brake Pad replacement - True or false question

Notices
SL55 AMG, SL63 AMG, SL65 AMG (R230) Discuss the SL55, SL63 and SL65 AMG.

Brake Pad replacement - True or false question

 
Old 02-01-2011, 10:21 AM
  #1  
Junior Member
Thread Starter
 
Join Date: Jun 2010
Posts: 70
Likes: 0
Received 0 Likes on 0 Posts
SL 550
Brake Pad replacement - True or false question

I am getting the brake wear indicator on my dash of my 2007 SL550. I scheduled an appointment with a very reputable independent mechanic to get my pads replaced and he said you always need to change out the rotors and wear sensors when you do the pads. My car has 24,600 miles on it.

So true of false, you always change the rotors with the pads?
Sg45 is offline  
Old 02-01-2011, 10:48 AM
  #2  
Senior Member
 
iAMGod's Avatar
 
Join Date: Jan 2011
Posts: 417
Likes: 0
Received 2 Likes on 1 Post
996tt
Ahh no....im no mechanic but never in my history have I ever heard of doing that especially at such low miles. Your rotors should last a lot longer than your pads.
iAMGod is offline  
Old 02-01-2011, 11:42 AM
  #3  
MBWorld Fanatic!
 
ohlord's Avatar
 
Join Date: Apr 2007
Posts: 6,170
Likes: 0
Received 4 Likes on 4 Posts
300E a couple 1994 w124wagon E320 Wagon/,1971MGB Track/Rally, MG Midget Autocross ,2000 E320 wagon.
Dealers and some

shops would follow the book and r/r rotors. Even if they were perfectly smooth just to avoid any issues with call backs if noise or other issues cropped up
in addition to the profit motive of course
So if they are smooth and no ridges you can get another use out of the fronts and most people several uses out of the rears.
Since mb rotors don't have much in the way of excess they can't be resurfaced
That is why they need to be replaced if not perfect.
And yes the wear sensors need to be replaced but they are only a few bucks each
Why not diy?
ohlord is offline  
Old 02-01-2011, 01:04 PM
  #4  
Member
 
Join Date: Jun 2005
Location: Bay Area, CA
Posts: 171
Received 0 Likes on 0 Posts
05 E55, 07 SL65, 06 S4
The bigger question is - why do you need to replace the pads after 24K miles? Did you track the car? If you didn't, take the wheels off and check the pads with a flashlight - maybe it's the sensor, not the pads?

As for your question - the rotors are designed to last as long as the pads. True, you can resurface them (a must with every set of new pads, not because of grooves, but because they must be machined back to parallel as due to caliper flex rotors never wear parallel) but after resurfacing the rotors they wont last another pad life duration, i.e. the rotors could very well reach min. thickness after the 2nd pads are only 50% used.
Don't skimp on your brakes, your life could someday depend on them working to their max.....

Originally Posted by Sg45 View Post
I am getting the brake wear indicator on my dash of my 2007 SL550. I scheduled an appointment with a very reputable independent mechanic to get my pads replaced and he said you always need to change out the rotors and wear sensors when you do the pads. My car has 24,600 miles on it.

So true of false, you always change the rotors with the pads?
CA_E55 is offline  
Old 02-01-2011, 01:37 PM
  #5  
PLATINUM SPONSOR
 
shardul's Avatar
 
Join Date: May 2008
Location: Houston
Posts: 11,458
Received 166 Likes on 140 Posts
2003 W211 E55, 2003 W220 S600
not rotors, but if you have the brake wear sensor message on the dash that means the connection in the sensor is broken due to a worn out pad. so yes sensor has to be repalced. they are less than 10 dollars. 2 sensors for each side on the front and one sensor on for the rear.
__________________
E55
Preferred Contact method PM or email [email protected]
Instagram @shardul_amg @ultimatepd
NO TEXT MESSAGES THEY WILL NOT BE REPLIED TO
PLEASE DO NOT SEND MULTIPLE EMAILS /PM WITH THE SAME SUBJECT MATTER. ALL EMAILS / PM WILL BE RESPONDED TO WITHIN 24 HRS.
shardul is offline  
Old 02-01-2011, 04:10 PM
  #6  
Junior Member
Thread Starter
 
Join Date: Jun 2010
Posts: 70
Likes: 0
Received 0 Likes on 0 Posts
SL 550
Thanks for the responses guys. I am not really concerned about the cost as much as just trying to make sure it's an honest answer. I have had a set of Akebano pads sitting on my garage shelf waiting to replace. I am hoping it cuts down on brake dust.

As for DIY - "don't skimp on your brakes, someday your life may depend on them!" - nuf said
Sg45 is offline  
Old 02-01-2011, 05:47 PM
  #7  
Super Member
 
abiazis's Avatar
 
Join Date: Jul 2009
Location: Asheville, Atlanta
Posts: 602
Likes: 0
Received 2 Likes on 1 Post
SL 65 AMG, Porsche 911 (993), 2014 Cayenne GTS, 2013 Toyota Highlander Limited
rotors

AMG advises to replace rotors with brakes on AMG cars.....called Germany to verify.......don't know about non-AMG, but if the rotors are within spec they should be okay to reuse if smooth....
abiazis is offline  
Old 02-01-2011, 06:23 PM
  #8  
Senior Member
 
Join Date: Mar 2007
Posts: 315
Likes: 0
Received 0 Likes on 0 Posts
You only need to replace them if you get vibration when you brake or the surface is uneven. MB recommends they be replaced every time which is why brake jobs at the dealer cost more college tuitions
M3nv is offline  
Old 02-02-2011, 12:16 AM
  #9  
MBWorld Fanatic!
 
ohlord's Avatar
 
Join Date: Apr 2007
Posts: 6,170
Likes: 0
Received 4 Likes on 4 Posts
300E a couple 1994 w124wagon E320 Wagon/,1971MGB Track/Rally, MG Midget Autocross ,2000 E320 wagon.
For front brakes

24k miles is actually pretty good .
Not track related wear at all.
And no you CAN'T RESURFACE THEM.
As to The DIY suggestion it ain't rocket science That's why brake jobs at the dealer are performed by kids just out of training class.
Frnt brakes Sl 550 takes longer to jack the car up on stands then it does to pop out the pads and replace them and the sensors.
Follow the Akebono bedding in procedure to the letter and be sure to use the paste and you will love the lack of dust.
Been doing my brakes on Benz for a bit over 40 years and they are as simple now as they were then and I'm still here.
Good place to start your Diy that way you won't be in shock next year when your SL is 5 years old and he hits you for A grand to replace $100 worth of off the shelf spark plugs.
Like i said most people get 2 uses out of the fronts(Full pad uses)
ohlord is offline  
Old 02-02-2011, 01:14 AM
  #10  
Junior Member
 
Join Date: Jan 2010
Location: San Francisco
Posts: 72
Likes: 0
Received 0 Likes on 0 Posts
'05 SL65
I replaced my pads around 27K at the dealership and was told rotors can be done later. Previous owner was an older gentlemen and I never tracked the car.
sf65 is offline  
Old 02-02-2011, 08:50 AM
  #11  
alx
MBWorld Fanatic!
 
Join Date: Dec 2004
Posts: 4,213
Received 195 Likes on 170 Posts
Originally Posted by CA_E55 View Post
The bigger question is - why do you need to replace the pads after 24K miles? Did you track the car? If you didn't, take the wheels off and check the pads with a flashlight - maybe it's the sensor, not the pads?

As for your question - the rotors are designed to last as long as the pads. True, you can resurface them (a must with every set of new pads, not because of grooves, but because they must be machined back to parallel as due to caliper flex rotors never wear parallel) but after resurfacing the rotors they wont last another pad life duration, i.e. the rotors could very well reach min. thickness after the 2nd pads are only 50% used.
Don't skimp on your brakes, your life could someday depend on them working to their max.....
pfft... sorry. do you always wear 5-point harnesses in your cars too?

the book does call for always doing rotors and pads, but in reality when rotors reach minimal useful thickness they will warp and start to "heartbeat" in the pedal when breaking from higher speeds. that is your clue that they need to be replaced.

replace pads only until the rotors warp. then replace rotors as needed.

your mileage will vary, but those are just my 2 cheap cents

alex

Last edited by alx; 02-02-2011 at 01:46 PM.
alx is offline  
Old 02-02-2011, 11:37 PM
  #12  
Member
 
Join Date: Mar 2007
Posts: 240
Likes: 0
Received 1 Like on 1 Post
2014 SL550
Dealer replaced just the pads mine lasted 40k. Front and rear. Rotors were still in spec.
carcommander is offline  
Old 02-03-2011, 04:49 PM
  #13  
MBWorld Fanatic!
 
Join Date: Apr 2009
Location: Lincoln, NE
Posts: 1,135
Likes: 0
Received 0 Likes on 0 Posts
2005 SL600, 2016 ES300h, 2012 Hayabusa
my rotors are warped in the front and I will be needing to replace them, but for the most part they should be able to be reused, anyone need a set of good condition factory sl600 pads? I am thinking the akebono route is a must with my wheels
NEMES1S is offline  
 

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 

Thread Tools
Search this Thread
Rate This Thread
Rate This Thread:
You have already rated this thread Rating: Thread Rating: 0 votes,  average.

Quick Reply: Brake Pad replacement - True or false question


Contact Us - About Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.
 
  • Ask a Question
    Get answers from community experts
Question Title:
Description:
Your question will be posted in: