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I bought a new roadbike with shimano ultegra hydraulic disc brakes. After I rode a couple thousands km, my disc brake pads started to rub the rotor, but just a little bit (it barely touches it, I can only hear it when I'm standing next to my bike, heave the wheel and roll it by hand).

I usually re-align the brake caliper, so it doesn't rub anymore, but the next day before ride I can hear it again (again, just a little bit)... Is this normal? I tighten it by 7Nm what should be sufficient, so I don't think that the caliper moves. I checked the brake pads, they are not worn out yet, but I also replaced them. The issue still remains.

thanks, Mat

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  • Are you saying that it is a constant rub as the wheel turns? Or does it just rub on one section or spot on the disc?
    – Geo242
    Aug 8, 2022 at 20:54
  • just on 1-2 little spots
    – Mat
    Aug 9, 2022 at 6:26
  • Possible duplicate of Should rotors have no rub at all?
    – scai
    Aug 9, 2022 at 7:04
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    If it's only in 1 or 2 spots, the disc is slightly warped and I would say no, it's not normal. However, it is common. It's not something I would just let go and try to ignore. I would fix it. Park (and others) make a nice tool meant for straightening warped rotors. Or just replace them, but straightening isn't all that hard.
    – Geo242
    Aug 9, 2022 at 14:49
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    There are several reasons the rotor can get warped... impact, heat, etc. It's not something that you should have to deal with a lot. If they go out of true a lot, they may be at the end of their life. Park tool has a nice article and video on the subject.
    – Geo242
    Aug 10, 2022 at 18:44

1 Answer 1

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Yes, 100% normal unfortunately.

I'm on to my 6th disc brake bike and all 6 have had this issue at some time or another.

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    Sorry, but I don't think this should be the accepted answer. Normal and common are not the same thing. It is common but not normal imo.
    – Geo242
    Aug 9, 2022 at 14:51
  • Do you re-align your brake calipers before each ride, or you just ignore it?
    – Mat
    Aug 9, 2022 at 17:00
  • @Mat just ignore it. its nearly always caused by warped rotors so re-centering the calipers doesn't help
    – Andy P
    Aug 9, 2022 at 18:09

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