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  #16  
Old 09-15-2012, 12:46 PM
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Quote:
Originally Posted by raymr View Post
I want to say it's not real. There would be no brake pad or backing left at all.
I've seen it before in the junkyard. Front rotors of last gen firebird/camaro looked like that. Car was in the junkyard due to serious front end damage. I wonder why. I'll have to do some digging around with my old phones
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  #17  
Old 09-15-2012, 01:18 PM
Inna-propriate-da-vida
 
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It is simply impossible (anecdotal I've-seen-it-before evidence not withstanding) for a 1/8" thick brake pad to wear away over a 1/2" of brake rotor material.

Also, the erosion of the rotor is extremely uniform, no deeper gouges from the rivets in the pads or any other kind of uneven wear.

And the real clincher is the fact that the inside edge of the rotor has been turned as well, an area that the pad does not contact.

Not to say that cars have not had similar things inflicted on them, just that this is not what it is implied to be.
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  #18  
Old 09-15-2012, 01:21 PM
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Quote:
Originally Posted by cmbdiesel View Post
It is simply impossible (anecdotal I've-seen-it-before evidence not withstanding) for a 1/8" thick brake pad to wear away over a 1/2" of brake rotor material.

Also, the erosion of the rotor is extremely uniform, no deeper gouges from the rivets in the pads or any other kind of uneven wear.

And the real clincher is the fact that the inside edge of the rotor has been turned as well, an area that the pad does not contact.

Not to say that cars have not had similar things inflicted on them, just that this is not what it is implied to be.
What makes you think the caliper is installed and not resting in an uninstalled position? Did you see the link I posted. It can happen.
http://www.2carpros.com/articles/vehicle-grinding-noise
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  #19  
Old 09-15-2012, 01:43 PM
Inna-propriate-da-vida
 
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Quote:
Originally Posted by MagnumPI View Post
What makes you think the caliper is installed and not resting in an uninstalled position? Did you see the link I posted. It can happen.
How to Repair Car Grinding Noises - 2CarPros
What makes you think that the rotor could possibly get worn on the inside shoulder?

Did you look at the link you posted?
Notice again in the original picture how evenly the rotor is worn, in contrast to the picture in your link.

I did not imply that this kind of thing cannot happen, in fact I believe my point was exactly the opposite. Just that the picture seems to be a set up.
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  #20  
Old 09-15-2012, 02:26 PM
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Quote:
Originally Posted by cmbdiesel View Post
What makes you think that the rotor could possibly get worn on the inside shoulder?

Did you look at the link you posted?
Notice again in the original picture how evenly the rotor is worn, in contrast to the picture in your link.

I did not imply that this kind of thing cannot happen, in fact I believe my point was exactly the opposite. Just that the picture seems to be a set up.
The original picture isn't evenly worn. Shoulder? where the backing plate rides against? I don't understand what you're trying to say. Of course it would make contact, it's just never supposed to get that close because the brake pad creates the clearance which would normally prevent the contact. And the first link shows both stages of wear. The original post shows an unevenly worn rotor, with a gouge cut into each 'fin' about 1/4 of the way down. And why wouldn't it be at least mostly even? The brake pad backing plate is flat after all...
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  #21  
Old 09-15-2012, 04:38 PM
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Quote:
Originally Posted by MagnumPI View Post
The original picture isn't evenly worn. Shoulder? where the backing plate rides against? I don't understand what you're trying to say. Of course it would make contact, it's just never supposed to get that close because the brake pad creates the clearance which would normally prevent the contact. And the first link shows both stages of wear. The original post shows an unevenly worn rotor, with a gouge cut into each 'fin' about 1/4 of the way down. And why wouldn't it be at least mostly even? The brake pad backing plate is flat after all...
boy this is becoming an intelligent argument.
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  #22  
Old 09-15-2012, 04:56 PM
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I like when the disc breaks off the hat.
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  #23  
Old 09-15-2012, 11:21 PM
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Quote:
Originally Posted by cmbdiesel View Post
It is simply impossible (anecdotal I've-seen-it-before evidence not withstanding) for a 1/8" thick brake pad to wear away over a 1/2" of brake rotor material.
hmmm brake rotor"cast iron", brake pad "hardened steel"
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  #24  
Old 09-15-2012, 11:56 PM
Inna-propriate-da-vida
 
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Quote:
Originally Posted by catmandoo62 View Post
hmmm brake rotor"cast iron", brake pad "hardened steel"
Yes, MOTO, they are.

Maybe the rivets are "hardened steel" too....
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  #25  
Old 09-16-2012, 02:05 AM
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Quote:
Originally Posted by cmbdiesel View Post
Yes, MOTO, they are.

Maybe the rivets are "hardened steel" too....
The pads do not have rivets !
Who ever first mentioned them is just showing that they have very little knowledge of brake pads, probably only ever seen them on pictures on the internet.
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  #26  
Old 09-16-2012, 08:44 AM
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I had a co-worker park beside me one time in an early 2000's front wheel drive Pontiac four door. It was noisy from the front. We pulled his wheel off and the front rotor looked just about like that. The solid disc was gone on one side. His stopping distances had increased a pretty good bit but I'm not too sure he noticed.
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  #27  
Old 09-16-2012, 09:26 AM
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Quote:
Originally Posted by layback40 View Post
The pads do not have rivets !
Who ever first mentioned them is just showing that they have very little knowledge of brake pads, probably only ever seen them on pictures on the internet.


Brake Pads Rivet For Mercedes Benz
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  #28  
Old 09-16-2012, 09:44 AM
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There was a thread years ago in the ML forum about the same thing:



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  #29  
Old 09-16-2012, 10:19 AM
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My guess is the rotor gets punished abuse with no pad replacement ,the rotor gets scared ,once they finally do get replaced they have the rotors turned ,repeat.It was probably at that last bit of metal material left before the fins that the person turning these rotors refused and they just let them ride from then on out.A rotor isnt that expensive .
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  #30  
Old 09-16-2012, 10:53 AM
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So it is possible. I didn't think a car could be drivable like that. I guess the funny grinding noise becomes normal after a while.
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Old 09-16-2012, 10:53 AM
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