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  1. #1
    Perma-clyde Alox's Avatar
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    Sep 2005
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    Vancouver, BC
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    '05 Stumpy FSR 120, REK TEK Blitzkreig (Commuter)
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    Shimano Disc Warped...

    I've got an '05 Stumpy FSR Comp 120 with Shimano M525 discs. After a recent ride, I noticed a rubbing noise coming from the rear brake. Upon closer examination it appears that the disc is warped - I must have hit it on a rock or something, but I don't remember having done it.

    My question is this: is it worth trying to 'true' (i.e.: unwarp) the disc, or should I just replace it? If I replace it, are there any aftermarket disc rotors that are any tougher that anyone might recommend?

    Finally, is this a typical failure mode for discs? Do mechanics see a lot of these types of failures?

    Thanks in advance for your advice,

    A.
    Nowadays I've got me two good wheels - and I'll seek refuge in aluminum and steel;
    Takes me out there for just a little while, and the years fall away with every mile...
    -Steve Earle, "The Other Kind"

  2. #2
    Senior Member Ray Dockrey's Avatar
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    Nov 2005
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    It can be trued. Do a google search and you will find many articles on how to do it. It isn't hard and I have to do mine every so often. You might not have hit anything. Sometimes they warp from the heat. I have heard even with a new disc you usually have to true them up.

  3. #3
    BloomBikeShop.com BloomBikeShop's Avatar
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    Sep 2004
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    East Coast
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    Trek 1500, Giant XTC SE2, S&M Warpig, KHE Premium Lagger, Trek 800, a couple old Raleighs, an old Road Runner, etc.
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    Quote Originally Posted by Ray Dockrey
    I have heard even with a new disc you usually have to true them up.
    Happens all the time

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