Porterfield RS-4 Brake Pads stopped the squeal | FerrariChat
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Porterfield RS-4 Brake Pads stopped the squeal

Discussion in '348/355' started by Gdude, Feb 9, 2012.

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  1. Gdude

    Gdude Rookie

    Dec 22, 2011
    31
    Florida
    Full Name:
    Gregory
    #1 Gdude, Feb 9, 2012
    Just replaced my new OEM squealing Brembo pads on the 355 with new Porterfield pads from Ricambri and no more embarrassing squeal! Previously removed the OEMs and applied CRC Disc Brake Quiet and still only 50% better. Installed R4S-AP345 all around with the same CRC and 0% squeal.
     
  2. Extreme

    Extreme F1 Rookie

    May 26, 2010
    2,515
    Northern Utah
    Full Name:
    Erick
    #2 Extreme, Feb 9, 2012
    Good to hear since I just ordered a set of the Porterfields. :)
     
  3. WATSON

    WATSON Two Time F1 World Champ
    Owner Rossa Subscribed

    Sep 9, 2010
    23,459
    WI
    #3 WATSON, Feb 9, 2012
    Curious....Do they have anti squeak padding on the back?
     
  4. BLAMPEE

    BLAMPEE Man Card Status: Never Issued

    Jun 28, 2008
    15,424
    Sunny Heavenly Beautiful Arizona
    #4 BLAMPEE, Feb 9, 2012
    Yep.

    My almost brand new OEM pads squeaked so badly; I replace them with the Porterfields and It's silent now! :)
     
  5. Eli355

    Eli355 Formula Junior

    Oct 12, 2010
    678
    Long Island, NY
    Full Name:
    Eli
    #5 Eli355, Feb 9, 2012
    Same here. Best move I ever made.
     
  6. Gdude

    Gdude Rookie

    Dec 22, 2011
    31
    Florida
    Full Name:
    Gregory
    #6 Gdude, Sep 21, 2012
    1500 miles and the new Poterfields RS-4s are squealing!
    Pulled the pads and applied new anti squeal and no difference!
    Poterfields are not the cure!
     
  7. SoCal1

    SoCal1 F1 Veteran
    Owner Silver Subscribed

    Jun 14, 2011
    8,629
    SoCal LA/OC/New Mexico
    Full Name:
    Tim Dee
    #7 SoCal1, Sep 21, 2012
    Not sure what I have but no squeel at all. Again I do jump on the binders hard at tiems and never ride the brake. Will have to look next weekend when I do some worky on her
     
  8. Ingenere

    Ingenere F1 Veteran
    Owner Silver Subscribed

    Dec 11, 2001
    6,430
    On the Limit
    Full Name:
    Dino
    #8 Ingenere, Sep 21, 2012
    The R4-S compound will also decrease the brake dust volume.
     
  9. gsfent

    gsfent Formula 3

    Nov 16, 2009
    1,099
    PB County, Florida
    Full Name:
    Jerry
    #9 gsfent, Sep 21, 2012
    Have you tried rebedding the brakes?

    Regards,
    Jerry
     
  10. andyw355

    andyw355 Karting

    Jul 5, 2011
    72
    Australia
    Full Name:
    Andy
    #10 andyw355, Sep 21, 2012
    My stockers were squealing like a stuck pig, embarrassing when pulling up to the lights! I replaced with the Porterfields from Ricambi and silent as a church mouse now. Seems to be less dust now, at least on the fronts. Only been in for a few hundred k's so will see...

    Old pads were about 1/3 of the new pads so not sure if that has an effect.
     
  11. sdavies88

    sdavies88 Karting

    Jun 9, 2009
    156
    Halifax, NS, Canada
    Full Name:
    Steve Davies
    #11 sdavies88, Sep 21, 2012
    Interesting, i replaced OEMs with Porterfields to try to reduce brake dust (with some success). Unfortunately they immediately started to squeal during slow speed, low pedal pressure stops. I took the car to the track, four 20 min sessions and they squeal no more!
     
  12. Subarubrat

    Subarubrat Formula 3

    Apr 1, 2009
    2,072
    VA
    Full Name:
    Scott
    #12 Subarubrat, Sep 21, 2012
    I had some initial success with the Poterfeilds and after a short period they sequel at low speeds just as bad as the stock ones did, proper break in was followed. Obviously not beating up on Poterfield here, the stock ones did it too, the common element is the car. I may start looking at other brakes, I am just sick and tired of this unfixable squeal.
     
  13. tcannon

    tcannon Formula 3

    Feb 18, 2009
    1,763
    Norman, OK
    Full Name:
    Todd Cannon
    #13 tcannon, Sep 21, 2012
    I switched to the AXXIS semi-metalic pads. I also installed them with squeal plates. When I installed them, instead of using the anti-squeal spray on the back of them, I smear a layer of high temp grey silicone instead. They do not squeal and little to no brake dust. They are not for track driving but I have not had an issue with aggressive driving on the street.
     
  14. Subarubrat

    Subarubrat Formula 3

    Apr 1, 2009
    2,072
    VA
    Full Name:
    Scott
    #14 Subarubrat, Sep 21, 2012
    Did the plates come with the pads or did you buy them separately, and if so where?
     
  15. Gdude

    Gdude Rookie

    Dec 22, 2011
    31
    Florida
    Full Name:
    Gregory
    #15 Gdude, Oct 12, 2012
    Removed the RS-4 pads and ground off the top of the material until the pores were clean and severely chauffeured the leading edge. The surface of the pads looked like cooled molted metal and were like glass. Cleaned off the original CRC "Disc Brake Quiet" (silicon type orangeish red) and applied the CRC " Disk Brake Quiet" spray (dark red in the spray can) and installed. My brakes are quiet again! Prefer the spray over the silicone tube as the silicone appears to wear down to metal/metal in a few miles. The theory to grind off the forward edge of the pad at a 45 is from a Brembo tech on another site. He said by the nature of the aluminum caliper they are not ridged enough to stop the high frequency vibrations and this was the best cure Brembo had found other than recasting the caliper in a higher tensile strength and heavier metal.
    Will keep you posted as to the duration of this fix!
     
  16. The Kook Abides

    The Kook Abides F1 Rookie

    Jan 4, 2011
    3,459
    #16 The Kook Abides, Oct 13, 2012
    Squealing brakes are caused by the backing plate vibrating....not the pad surface that touches the rotor. Sand the backing plate flat and apply high temp anti-seize making sure they float inside of the caliper without binding. Sometimes the ears of the plate need to be filed. Always lube the pin as well.
     

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