Steel Brake Rotor Life

[CT5VBW]

HI All,
I have 28K miles on my car (bought new in 10/2021) and last time i took the car in for the brake failure (replaced master cylinder?, see below), they put a recommendation in the notes (see below) and quoted me a full rotor/pad replacement for about $600 in labor, excluding parts costs. I actually have already purchased all of the rotors and brake pads, but I am debating whether it is all really needed right now, especially the rotor. Pads are probably needed, but I'm not sure what I should do to check how bad the "rotors being dished" are and/or if that is really a thing at 28K miles. Seems like they should last quite a bit longer than that. This is a daily driver to work (~50mi) with no track time. I do drive her decently spirited, but I really fail to believe I drive her so hard as to have to replace the rotors at this time. But maybe I am?

Also, I started thinking about it and I am wondering if the master cylinder was screwed up if it could have been causing excessive wear on the rotors and pads the entire time? I don't know enough about braking systems to know, but I don't believe I have seen anyone else having a failed brake system so was thinking maybe its all related and I should ask Cadillac to cover all or a portion? I'm not trying to get out of the maintenance if its really needed, but if its not my fault I don't think I should have to pay for premature replacement (at least not 100%).

Any thoughts would be appreciated.

Recommendation

Brake Failure

 

[Melon]

You can always look for a lip on the edge of the rotor, or better yet, measure the thickness of the rotor yourself.

Amazon.com

I'd venture to say, it's procedure for them to replace the rotors with the pads (best practice), and these being aggressive pads, I can see them being done by 28k miles.

 

[ngoni]

You could pull the existing pads and look for signs of uneven wear that would indicate the rotor is no longer flat. That would be a dead giveaway. But at 30k miles it isn't unheard of to have high performance rotors like these Brembos to need replacing.

 

[CaddyTrack]

HI All,
I have 28K miles on my car (bought new in 10/2021) and last time i took the car in for the brake failure (replaced master cylinder?, see below), they put a recommendation in the notes (see below) and quoted me a full rotor/pad replacement for about $600 in labor, excluding parts costs. I actually have already purchased all of the rotors and brake pads, but I am debating whether it is all really needed right now, especially the rotor. Pads are probably needed, but I'm not sure what I should do to check how bad the "rotors being dished" are and/or if that is really a thing at 28K miles. Seems like they should last quite a bit longer than that. This is a daily driver to work (~50mi) with no track time. I do drive her decently spirited, but I really fail to believe I drive her so hard as to have to replace the rotors at this time. But maybe I am?

Also, I started thinking about it and I am wondering if the master cylinder was screwed up if it could have been causing excessive wear on the rotors and pads the entire time? I don't know enough about braking systems to know, but I don't believe I have seen anyone else having a failed brake system so was thinking maybe its all related and I should ask Cadillac to cover all or a portion? I'm not trying to get out of the maintenance if its really needed, but if its not my fault I don't think I should have to pay for premature replacement (at least not 100%).

Any thoughts would be appreciated.

Recommendation
View attachment 30011

Brake Failure
View attachment 30012

I think this is the second time someone posted a service report with exactly, "THIS IS A BLACKWING." somewhat randomly inserted in the middle of the explanation. - or maybe it was you before. I'm too busy and lazy to go search. (not busy enough apparently, lol)

 

[CBH]

Normal street driving should not wear out pads or rotors in under 30K miles.

These track pads may be that much different from normal pads, but its easy enough to check.

Good theory about the bad master cylinder applying unneeded pressure all the time. Unfortunately, it will likely be impossible to know the truth on that one.