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E46 (1999 - 2006)
The fourth generation 3 Series (E46 chassis) was introduced in 1999 and set the standard for engineering and performance during it's years of production including being named to Car & Driver's 10 best list every one of those years! ! -- View the E46 Wiki

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  #1  
Old 05-15-2014, 04:07 PM
computerwhiz1 computerwhiz1 is offline
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Mein Auto: 2000 323i
Are my brakes glazed?

I put new brake pads and rotors on all 4 wheels back in summer 2013. Since then I have put only about 8,000-10,000 miles on the car and here recently I have had two people tell me that my brakes were glazed. One guy noticed by looking at my rotors, the other by the squealing sound they made. I am going to attach some pictures below and see what you guys think because I can't find any information online about it and honestly, I'm not sure what to do if anything?

I frequently drive on a highway going to and from college. I cruise at about 70-75, but it has red-lights every so often when you get near a big town, about every 30 miles or so. They turn red in a blink and you just about have to slam on your brakes to get from 70-0 without running the light. Its not an ideal situation since once you're stopped at the light your brakes are sitting there cooking. I do my best to roll forward a bit so the pads aren't sitting on the same spot. I'm not sure if this has anything to do with it though as I wouldn't really categorize it as emergency braking, really just moderate braking, and I wouldn't call it anything extreme my any means.

The brakes are the cheapest offering that oem dimmer parts has to offer so they are not OEM.

These are from the right side:

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Pads on right:
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These are from the left:

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you can see what looks like an outline from where the pad stopped

Pads on left:

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  #2  
Old 05-15-2014, 05:04 PM
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Fast Bob Fast Bob is offline
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Google Dave Zeckhausen`s white paper on "Brake Bedding", and perform it as described. It`s FREE (what a concept ! ), and often helps....
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  #3  
Old 05-15-2014, 06:26 PM
computerwhiz1 computerwhiz1 is offline
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Quote:
Originally Posted by Fast Bob View Post
Google Dave Zeckhausen`s white paper on "Brake Bedding", and perform it as described. It`s FREE (what a concept ! ), and often helps....
Would this be something that is ok to do now? Seems like this would overheat the brakes and make it worse?
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  #4  
Old 05-15-2014, 06:36 PM
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Fast Bob Fast Bob is offline
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Originally Posted by computerwhiz1 View Post
Would this be something that is ok to do now? Seems like this would overheat the brakes and make it worse?
FOLLOW THE DIRECTIONS....
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  #5  
Old 05-15-2014, 08:37 PM
racin366 racin366 is offline
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I agree, try bedding the pads.
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  #6  
Old 05-16-2014, 11:41 AM
computerwhiz1 computerwhiz1 is offline
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Ok, so this morning I did my best to bed them. Read the online thing and followed it as best I could. I managed to get 2 or 3 60-10 stops in and then had to cruise a bit to let some traffic pass me. Only a minute or two. After that I managed to get another 5-6 60-10 stops in. The last 2 or 3 stops I got a good bit of brake fade. They were hot enough to be smoking and on the last stop I decided they had had enough. Plus I was getting to the end of the road I was on. Afterwards I cruised at 60 for another 5 or so minutes to cool them down.

I would say braking performance has improved but how do I know I did it well enough? I know many people talk about the "blueish grey" coloring the rotors should have. Mine definitely have that but it's mainly on the outer half of the rotor.


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  #7  
Old 05-16-2014, 12:53 PM
racin366 racin366 is offline
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The improved braking performance is a good sign you did fine. Otherwise use google to find details and pictures.
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  #8  
Old 05-16-2014, 12:57 PM
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Fast Bob Fast Bob is offline
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Location: Here, there, everywhere....
 
Join Date: Jun 2004
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Mein Auto: 2004 330Ci ZHP 3 pedals
Quote:
Originally Posted by computerwhiz1 View Post
Ok, so this morning I did my best to bed them. Read the online thing and followed it as best I could. I managed to get 2 or 3 60-10 stops in and then had to cruise a bit to let some traffic pass me. Only a minute or two. After that I managed to get another 5-6 60-10 stops in. The last 2 or 3 stops I got a good bit of brake fade. They were hot enough to be smoking and on the last stop I decided they had had enough. Plus I was getting to the end of the road I was on. Afterwards I cruised at 60 for another 5 or so minutes to cool them down.

I would say braking performance has improved but how do I know I did it well enough? I know many people talk about the "blueish grey" coloring the rotors should have. Mine definitely have that but it's mainly on the outer half of the rotor.


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Don`t worry about it, you did fine
You can`t expect to get exactly the same results as with brand-new brakes.
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When faced with choosing between two evils, always go with the one you`ve never tried before....
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