Inner and outer brake pad wear - Mercedes-Benz Forum

LinkBack Thread Tools Display Modes
post #1 of 2 (permalink) Old 03-22-2012, 02:25 PM Thread Starter
BenzWorld Member
Date registered: Apr 2010
Vehicle: 2005 E 320 CDI
Location: tampa
Posts: 71
Mentioned: 0 Post(s)
Quoted: 6 Post(s)
(Thread Starter)
Inner and outer brake pad wear

fellow owners-My 2005 cdi has 159000 miles on it. I've changed the pads once (front at 91,000, rear at 75,000) and have the orig rotors. I drive out west a lot from Florida and other highway driving. I just checked the fronts with the idea of doing a complete brake job (rotors, pads, fluid, wheel bearings) and noticed on the front, the inner pad on both sides is considerably more worn than the outer pads. Both have worn about the same, the inners are about 1/8 in and the outers maybe 1/4 in. The rotors are just within spec (25.4) so I will do rotors also. I will do the job in the next month or so but wonder why the inners wear so much more. Checking one set of the old pads that I had kept, the same situation. Everything works well, just curious. The replacement pads are MB from the dealer. steve
jarrett2016 is offline  
Sponsored Links
post #2 of 2 (permalink) Old 03-29-2012, 07:47 PM
BenzWorld Member
Date registered: Jul 2009
Vehicle: '13 E350 BTC, '06 E320 CDI
Location: Austin, TX
Posts: 113
Mentioned: 0 Post(s)
Quoted: 6 Post(s)
Hey Steve,

In many applications, the inner surface of the brake rotor runs hotter than the outer surface due to decreased cooling airflow. Sometimes you will see ventilated rotors whose inner disk is thicker than the outer disc to provide additional thermal mass. The added mass allows the inner rotor to absorb the necessary thermal energy while starting out at a higher temperature, without exceeding the critical temperature for the materials. The higher temperatures cause the inner pad to wear faster.

You should consider using some aftermarket brake pads that produce less brake dust than the OEM pads. I have been very happy with the Akebono pads I put on my car.

Last edited by Werkstattmeister; 03-29-2012 at 07:51 PM.
Werkstattmeister is offline  
Sponsored Links

  Mercedes-Benz Forum > Mercedes-Benz Technical Forums > The Discount Tire Direct Tire, Wheel, Brake & Suspension

Quick Reply

Register Now

In order to be able to post messages on the Mercedes-Benz Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:


Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode

Similar Threads
Topic Author Forum Replies Last Post
Brake lining wear, ASR, Release hand brake! brandon671 W210 E-Class 34 03-06-2012 04:16 PM
'96 S500 Outer Tire Wear & Wobble Tweetbird W140 S-Class 1 04-12-2011 07:44 AM
Brake Wear Indicators - Brake Recommendations tomcat7 W163 M-Class 1 10-25-2007 01:19 PM
brake lining wear message and brake light jrey09 W203 C-Class 0 04-22-2007 02:37 PM
Excessive front tire wear (outer edge) sunit C208/A208 CLK-Class 5 07-22-2002 06:35 PM

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Title goes here

video goes here
description goes here. Read Full Story
For the best viewing experience please update your browser to Google Chrome