• Morning!

    Shimano GRX rear.

    Good lever travel (stops 10mm from bar), as pads hit the rotor. Reasonably solid feel - feels like the front which isn’t causing me any problems.

    There’s very little bite* between the pads (resin) and the rotor. I have cleaned both using dry wet n dry paper and then Muc Off disc brake cleaner (allowing to evaporate and wiping off the excess).

    *the brakes drag, but I can’t lock the wheel up. And there’s squealing if I really try to grab a proper handful**.

    Are the pads and disc (either or) contaminated? Can I fix it? Will they bed in following my cleaning them?

    Do I need to bleed the brake again?

    **ooh matron

  • Sounds like contaminated pads, but check the rotor, wheel and caliper is all tightened up properly too. Proper bedding in after the cleaning/new pads helps too.

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