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  1. #1
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    Do all rotors eventually warp slightly ?

    I have a set of 180mm rotors on my bike that have been in use for 2 light seasons. Never smoked or super blue'd. I was spinning the wheels on the stand and noticed they didn't run true - enough to make noise on the stand but not noticable on the trail. Do any rotors stay true or is this normal. thanks.

  2. #2
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    Reputation: 006_007's Avatar
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    I have yet to have a set stay true (either from heat cycles or dinging them on something).

    Used Hayes, Avid, Magura, Hope, 160, 180, 200.....

  3. #3
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    Truing your rotors occasionally is normal...
    "...the people get the government they deserve..."
    suum quique

  4. #4
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    how do you true rotors? with a crescent wrench?

  5. #5
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    I use a small adjustable wrench, but you can buy specialized tools from Park or Morningstar
    http://parktool.com/products/detail....=14&item=DT-2; can't get the morningstartools.com site to load right now.
    "...the people get the government they deserve..."
    suum quique

  6. #6
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    I wouldn't even bother truing them unless you cannot get the brakes adjusted properly. Truing rotors is a big PITA.

  7. #7
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    Quote Originally Posted by flow350
    I wouldn't even bother truing them unless you cannot get the brakes adjusted properly. Truing rotors is a big PITA.
    How hard do you think it is? Sometimes you need a true rotor to setup brakes the way you like or to simply prevent rub/noise. In any case it's no more effort than most adjustments on a bike...
    "...the people get the government they deserve..."
    suum quique

  8. #8
    LA CHÈVRE
    Reputation: Dan Gerous's Avatar
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    I have had to true rotors out of the box once (Hope), but I must be lucky, never had any rotor warp... Shimano and Formula and the Hopes I trued stayed true.

    DAN.GEROUS.NET : MOUNTAIN BIKING : CYCLOCROSS : ROAD :

  9. #9
    ~Disc~Golf~
    Reputation: highdelll's Avatar
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    Quote Originally Posted by flow350
    I wouldn't even bother truing them unless you cannot get the brakes adjusted properly. Truing rotors is a big PITA.
    qua???
    truing a rotor takes 30-60 seconds tops ... find where it rubs - rotate wheel to access affected area - bend in desired direction - verify - repeat if necessary
    This is something that even the most ham-fisted mechanic can do quite easily.

    Or - did you mean this by PITA

    Honestly, you just take a deep breath and say Fuck it.

  10. #10
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    I guess I just try too hard to get them perfectly true--like wheels.

  11. #11
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    I trued my Tektro rotors 2 or 3 times in 14 months of use. No big deal.

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