Brakes - shudder during stops
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Cadillac Seville / Cadillac Eldorado Forum Discussion, Brakes - shudder during stops in Past Cadillac Vehicle Discussion; Another post got me thinking on this subject. Why is it that I can drive a vehicle for 4 or ...
  1. #1
    9302Eldug is offline Cadillac Owners Fanatic
    Automobile(s): 93 and 02 Eldorado
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    Brakes - shudder during stops

    Another post got me thinking on this subject. Why is it that I can drive a vehicle for 4 or 5 years before the brakes need replacing but the wife drives a car for about a year and less than 5k miles and the front rotors are warped? When I took over the 93 from her I had to replace the front pads and rotors, And now the 02 that she drives needs the same! Never uses the parking brake either. Female Drivers!
    RJ

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  3. #2
    thu's Avatar
    thu
    thu is offline Cadillac Owners Connoisseur
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    Re: Brakes

    I find that many women drivers ride the brakes. I have no idea if this is your wife's issue (or not) or if this would cause warping (I wouldn't think so).

  4. #3
    Submariner409's Avatar
    Submariner409 is offline If it won't run, chrome it
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    Re: Brakes

    Brake rotors are machined from gray cast iron and do not 'warp" There have been several recent threads on this, with links to brake sites, discussing the perceived problem. Look through Cadillac Tech Tips and Item Specific: Suspension, Brakes, Tires. Or Google "cadillac forums brake rotor warp information" or something close.

    A possible "fix" is to get the car out on a lightly traveled highway - do several aggressive stops from 60+, driving away after each stop and do not hold the brakes on at the stop - what you're doing is scrubbing pad resin deposits off the rotors - these cause a nasty shudder that is usually described as "warping". After the last aggressive stop, drive normally for 5 - 6 miles to cool the rotors. The deposits come from sitting at long stops with the brakes held on.

    You might want to read the brake maintenance discussions in the American, Automotive section (plus all links) in www.ebcbrakes.com.

  5. #4
    9302Eldug is offline Cadillac Owners Fanatic
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    Re: Brakes

    Very possible Sub, I will try that but when I turn rotors at work off of a vehicle with pulsating brake pedal the rotors are not true or straight.
    RJ

  6. #5
    Submariner409's Avatar
    Submariner409 is offline If it won't run, chrome it
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    Re: Brakes

    Yep - There's a whole section in the service manual about front end vibration and rotor runout - anything from dirty hubs to a packing label between the rotor and hub.

    Somewhere in here - pretty recently - there's quite a writeup on rotors and why they judder.

    This is only one ounce in a ton of reading info on brakes, rotors, and black magic. http://www.stoptech.com/technical-su...nd-other-myths

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