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Brake problems, Rear wheel hop 2002 Z28 M6

This is a discussion on Brake problems, Rear wheel hop 2002 Z28 M6 within the Suspension and Handling forums, part of the General Help category; It feels like my rear wheels are severely hopping when I do a hard brake from like 80-5MPH on semi-uneaven ...

  1. #1
    TroyZ28
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    Brake problems, Rear wheel hop 2002 Z28 M6

    It feels like my rear wheels are severely hopping when I do a hard brake from like 80-5MPH on semi-uneaven pavement. I typically dont push in the clutch during braking if that has something to do with it. I only push in the clutch if I come to a complete stop or need to switch gears.

    This seems to be a new thing. Its caught be by surprise a couple of times.

    I have the following mods on a 2002 Z28 M6 60,000 Miles:
    KYB AGX adjustable shocks with Ground Control adjustable coil overs with Eibach springs. I believe the spring rates are 500 in front and 175 in the rear.
    BMR SFC's
    Relocation Brackets
    Pan Hard Adjustable Rod
    Emergency Brake tightened by dealship prior to suspension mods.

    Please tell me what you would do. Any additional suspension mods I need like a torque arm? I am going to a brake shop soon because I dont feel things are right.

    So far I been told to buy A good aftermarket torque arm can help 75% of the issue (spohn etc), LCA's, and replace stock rotors and pads with aftermarket ones.

  2. #2
    Senior Member mrr23's Avatar
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    dark bowling green
    2000 corvette

    check the torque arm mount. it's located on the rear of the trans where the arm goes through it. rubber bushing could be worn out. see if you can move it up/down by hand.

  3. #3
    Crazy Canuck ! Eugenio_SS's Avatar
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    Montreal, CANADA
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    triple-black
    2000 CamaroSS convertible

    getting a stronger TA will help in that circomstances.
    I've had lots of wheel-hop in braking until I upgraded it... but had it with sticky rubber under racing circumstances.
    Apart from that, are you sure the KYB's are properly damping the 175 rear spring rate ?
    Might be too much for the shocks... not sure, though. Just throwing an idea
    Eugenio_SS
    almost stock triple-black 2000 SS convertible with 17x11s on all 4 w/ 315s at the track or on the street with 18x10.5s on all 4 w/ 315s: (1), (2)

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