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Thread: Uneven rotor wear... how much is fucked?

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    Member Joe Shabadoo's Avatar
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    Uneven rotor wear... how much is fucked?

    finally got all my shit to make the zx6 go/stop/hopefully turn

    so, brains trust - thoughts :

    Current front brakes are squeeky as fuck, as pads are down to couple mm, replacing with EBC EPFA pads anyhow.
    thickness-wise well in spec, but the rotor is unevenly worn, can feel it. I know some is a to be expected but just feels more than on my other bikes.
    Sorta like

    ===-----___-------=============||


    By verniers, is about a 8mm x 0.25mm depression (ave... ranges from 0.2->0.35) in middle of pad contact area. is it worth resurfacing or will new pads bed in just fine?

    Also have some OEM rotors here, but NFI if zx6's had some shitness to them which inspired previous owner to change to aftermarket, but they look to be barely worn.

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    Member dwillia's Avatar
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    more surface area when bedded in!!

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    Member Joe Shabadoo's Avatar
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    ha, true... more thinking heat distribution though.
    suspect its probably fine, just all my other bikes have always had perfectly even wear. am guessing the calipers were misaligned or sticking or something

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    It's either going to give you a pulsey lever, or the pad will glide over those areas ultimately giving you limited pad contact in that area. Maybe not much difference to the pad crossing a slot, but I'd claim any sort of hollow as a bad thing and say the rotor requires grinding/replacing.
    Got told by some people that nobody will grind/skim motorbike discs, but they do have a minimum thickness. Found someone to machine the set I have, but had already purchased new discs and haven't put the old ones back on the bike to test the theory.

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    Member Goliath's Avatar
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    I would buy new ones. When I'm riding I want my mind free of concerns. I don't want to worry about the brakes when I'm doing 110 km/h.

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    Member Triple's Avatar
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    What brand are the aftermarket discs installed? If Chinese, put the OEM's back on..

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    Member Joe Shabadoo's Avatar
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    Motomaster, from NL and by all reports a decent disc.
    Will get them skimmed I think. Couple of the caliper bolts were seized epic styles and having to drill the fuckers out so will be waiting for Ti replacements anyhow.

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