Rear carbon ceramic rotor damaged? | FerrariChat

Rear carbon ceramic rotor damaged?

Discussion in 'FF/Lusso' started by chris-w, Jul 8, 2019.

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  1. chris-w

    chris-w Rookie

    May 1, 2013
    29
    London
    #1 chris-w, Jul 8, 2019
    Driving my F12 this weekend I noticed a rotational squeak coming out of the rear right brake disk, its as though its slightly warped and squeaks every time disk reaches the same section in rotation.

    I decided to have an inspection myself to check for any possible trapped pebbles etc and noticed the rotor has a gouge taken out of it in the middle ventilation section (not on the from or rear braking face)

    Not 100% sure this is causing the noise and or if there is an amount of tolerance on these disks. I have a feeling that a dealer is going to immediately advise me a new disk needs to be installed which doesn't sound appealing as they are big $$.

    Anyone have experience with these ?
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  2. ttforcefed

    ttforcefed F1 World Champ
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    Aug 22, 2002
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    #2 ttforcefed, Jul 8, 2019
    Sounds crazy but I thought i had same issue in my fff and ended up being the rattling from the seat belt dispenser or the light in the rear - not sure if f12 has those


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  3. chris-w

    chris-w Rookie

    May 1, 2013
    29
    London
    #3 chris-w, Jul 8, 2019
    Haha, err its not a rattling its a very identifiable CCR squeak that is much more prominent when driving slow and if driving next to a wall or another vehicle much louder. It squeaks on every rotation of the wheel.
     
  4. otakki

    otakki Formula 3

    Mar 24, 2016
    1,624
    #4 otakki, Jul 8, 2019
    Not quite seeing the gouge in that pic. With it being so shiny and reflective, the disc sure looks new.
     
  5. obbob

    obbob Formula Junior

    Aug 14, 2017
    774
    #5 obbob, Jul 8, 2019
    I don't see anything wrong with that disk
     
  6. gilly6993

    gilly6993 Formula 3

    Aug 20, 2009
    2,478
    Longmeadow, MA
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    Eric
    #6 gilly6993, Jul 8, 2019
    I thought it was just me. I don’t see it either....


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  7. ttforcefed

    ttforcefed F1 World Champ
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    #7 ttforcefed, Jul 8, 2019
    Same - which is why suggested the alternate culprit.
     
  8. JasonN

    JasonN Formula Junior

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    #8 JasonN, Jul 11, 2019
    I can't see anything on it either. You might try bedding the brakes to see if that helps.
     
  9. JasonN

    JasonN Formula Junior

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    #9 JasonN, Jul 11, 2019
  10. Newjoint

    Newjoint Formula 3

    Jan 17, 2016
    1,115
    #10 Newjoint, Jul 11, 2019
    Cc brakes squeak for the most minor imperfection. A small grain of sand can get imbedded on the pad and do it. Try moving in reverse and brake hard a few times and see if it clears it.If not then
    More than likely the pads may need replacing but sometimes paste on the pads can sometimes solve the problem


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  11. Zedtt

    Zedtt Formula Junior

    May 29, 2005
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    Terry
    #11 Zedtt, Jul 11, 2019
    Damage being referred to is in the area between the front and rear disk surfaces.
     
  12. Solid State

    Solid State F1 Veteran
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    #12 Solid State, Jul 21, 2019
    The arrow points to the ventilation hole but it is in shadow in that image. We can't see a gouge that way. Try posting a different pic with the light source directly from bottom or top of disc to show the surface imperfection you suspect that way we can see compared to ours.
     
  13. BruceC

    BruceC Karting
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    Apr 26, 2018
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    #13 BruceC, Apr 4, 2023
    For future reference, I had a similar noise that was traced to the right rear wheel. After some coaching from a fellow Fchat member, I removed the rear disc and found 3 of the 4 electronic parking brake springs had failed (probably one retainer spring let go causing the others to fail). If you have strange noises coming from the wheel with the EPB, I'd definitely recommend having a look. There's a brief video clip on youtube from Autovlog showing them having to replace one of these springs as well, leading me to suspect spring failures are not all that uncommon.
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  14. 350MH83

    350MH83 Formula 3

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    #14 350MH83, Apr 20, 2023
    The gauge OP is referring too is the manufacturing gauge down during manufacturing process to balance the disk. Totally normal and certainly not the reason for the squeaking noise.
     

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