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I think so... OEM is crap these days
I am going to have to disagree on that, in particular to brake rotors.

I once witnessed an OEM brake rotor manufacturer dialing in machining centers on a new brake rotor machining system. Tolerances were very tight. Took them better part of a week to get everything just right.
 

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Some OEM brakes are good/perform well and some are the opposite. Often it has to do with the size of the brakes, not their actual quality. I had a Dodge minivan, the kind of car intended to load with the family and stuff. It had small brakes that stopped the car, but never lasted over about 25k miles. Now my wife has a 6 cylinder Mustang convertible. Since it is supposed to be a sporty kind of car, it has way bigger brakes than I expected, and it is not a car that has room for lots of people or cargo. At 60k miles I replaced the brakes because they were glazed and rumbled, but they still looked like new with very little wear.
 

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It does happen to an extent, I believe it's why we end up seeing the glossy finish on rotors and while it may account for some thickness variation, I've had enough rotors on a lathe to also see that metal gets removed not just adhered friction material to get a rotor flat again.

Mostly when I see pad material fused to a rotor it's because a vehicle hasn't been driven and some sort of reaction happens between the friction material and the rotor leaving a noticeable build up(real common on 07-16 Honda CR-V rear rotors). As a professional tech we would just resurface them but realistically you could grind the build up off with an abrasive disc on an angle grinder. Not sure how long that fix would work/last though.

The other thing I have noticed when they do leave a build up from sitting, even when you resurface them you can get the rotor flat but still see the outline of the brake pad where the build up was.
Glossy finish is glazing. Again, from misuse or excessive heat (faulty components).

If you guys can come up with more than one dumb website saying brake pad material transfers/bonds to rotors/drums I may believe you. But for now and from my long term experience, its b.s.
 

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Glossy finish is glazing. Again, from misuse or excessive heat (faulty components).

If you guys can come up with more than one dumb website saying brake pad material transfers/bonds to rotors/drums I may believe you. But for now and from my long term experience, its b.s.
Every rotor I've ever seen glazes, google what glazing is, transfer of pad material to the rotor.

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Also I'm not a hobbyist, I fix cars at a high volume dealership for a living, 15 years in the industry, ASE Master certified with L1 and Honda Master certified.
 

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If you guys can come up with more than one dumb website saying brake pad material transfers/bonds to rotors/drums I may believe you. But for now and from my long term experience, its b.s.
Doesn't that happen during "bedding the brakes" and is listed as the proper break-in on practically every website about brakes?

Bedding in your brakes is just an industry term to explain breaking in your new brakes. Bedding in your brakes helps transfer an even layer of brake pad material onto the brake rotor which assists in smoother brake operation and improved braking power.
 

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So if you want more to argue about discuss the difference, benefits, issues between metallic and what we'll call Nao type pads, those being the run of the mill pads that 99.9% of cars use. Lets see how many false/inaccurate/I've done it that way for 30 years comments that brings up.

I'm really amazed at all the false, misleading, ignorant posts here about rotors despite some accurate posts that get dismissed. And, just because something happened one time does not make it reality.
 

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Discussion Starter · #68 ·
So if you want more to argue about discuss the difference, benefits, issues between metallic and what we'll call Nao type pads, those being the run of the mill pads that 99.9% of cars use.
I'd be interested in hearing from someone knowledgeable on the subject, which you seem to be. I've read alot that says ceramic are the best, but that comes from places that are trying to sell them, so I don't know if that's really true.
 
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