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  1. #1
    mtbr member
    Reputation: jollybeggar's Avatar
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    When to replace disc?

    How do you determine when to replace your disc?
    Happy Trails
    Jolly

  2. #2
    Interplanetary Poultry
    Reputation: scatterbrained's Avatar
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    Are they warped?
    Are they grooved?
    Are they below minimum thickness?
    Are they dished?

    If the answer to any of those questions is yes, feel free to replace them.
    Granted warped rotors can be straightened. . . . . .
    Editor In Chief, "Internet Tough Guy Magazine"
    "Home of Chuck Norris' Keyboard"

  3. #3
    Fat-tired Roadie
    Reputation: AndrwSwitch's Avatar
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    I'd have to have a really badly warped rotor to replace it. Supposedly, warping is something that can happen really easily on a wet ride. Since I live in the Pacific Northwet, that's pretty frequent.
    "Don't buy upgrades; ride up grades." -Eddy Merckx

  4. #4
    OSCMTB
    Reputation: Berkley's Avatar
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    Compare the thickness of the braking track to the thickness of the rotor arms. If it looks excessively different, you might consider replacing them.

  5. #5
    > /dev/null 2&>1
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    Re: When to replace disc?

    Often the rotor will have a min thickness specified on it. You must use calipers or a micrometer. I think my formula rotors are min 1.7mm.

    Sent from (redacted by nsa)
    ------------------------------------------------
    They're justified and they're ancient and they like to roam the land

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