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brake shudder

Discussion in 'VY Holden Commodore (2002 - 2004)' started by B-Man, Dec 25, 2015.

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  1. B-Man

    B-Man Member

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    thanks guys when i get some time i will re check everything and look at some new rotors if i can't find anything visually wrong
     
  2. Turtl3

    Turtl3 Member

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    well u wont be able to visually 'see' if the rotors are out of whack just with plain eyesight- its known that they can flex under serious braking forces, even if they are still within spec and cause a shudder(but this is mainly in track applications with larger, lesser quality, aftermarket rotors). so chances are, if theyre standard, they need machining if its just the steering wheel pulsing

    normally a shudder through the steering wheel at lower speeds, indicates the front rotors need machining...at higher speeds, it may not be as apparent through the steering wheel, but you should still feel it...if its the rear wheels aswell, u will feel pulsing through the pedal
     
  3. baza

    baza Member

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    not entirely correct .... if the brake pedal pulsates under braking it is more likely to be the front rotors as 70% of braking force is on the front rotors , dont nitpick my replies i am a qualified backyard mechanic .... ha ha.....cheers.
     
  4. TI3VOM

    TI3VOM Active Member

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    Yeah buy vc commodore is a tyre specialist/mechanic so who's more qualified?

    I vote we put you both in a ring and the one who comes out alive wins.
     
  5. vc commodore

    vc commodore Well-Known Member

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    Not worth putting you in the ring, as you're already dead.....Besides, you have no idea what my qualifications are, so stick your nose out
     
  6. vc commodore

    vc commodore Well-Known Member

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    If this was the case, what causes steering wheel shuddering under braking?

    Also using this "theory", why does brake pedal height come from the rear brakes, especially with drum brakes?

    And yes most braking force comes from the fronts....

    Look forward to hear your qualified back yard advice
     
  7. TI3VOM

    TI3VOM Active Member

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    Is that a threat???

    Wow, you couldn't have been more of a dick it you tried.
    I could not give a **** about your qualifications, you make out like you are THE tyre specialist on this forum & anybody else's opinion is irrelevant but yours when it comes to tyres, hence my comment.

    If you cant take a joke, get off the internet, otherwise you might have a heart attack or stroke & we clearly wouldn't want for you to have one of those ;)


    :upyours:
     
  8. vc commodore

    vc commodore Well-Known Member

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    Goes to show how helpful you are....thread is about brakes not tyres, last I looked.....So yes I am a dick for even commenting on your postings....
     
  9. TI3VOM

    TI3VOM Active Member

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    Yes....Goes to show how helpful I am? Was I not the forst person to ask some questions in this thread to get a clearer picture as to exactly what that OP's problems were? Was my post cocky in anyway?
    If so please people, tell me!


    You on the other hand have come across as a know it all and have implied that everybody else's suggestion is wrong & only your suggestion is right.

    Please continue to tell everybody that 100% the OP's problem is due to what you think.
    There are many factors that could be causing very similar symptoms to warped rotors, but you have clearly seen the OP's car and know everything about it.

    The OP can only tell us what they think the car is doing & how bad they think the car is performing/handling, this might be significantly different to what you or myself would consider as being a problem.

    This is why asking for help diagnosing a problem on the internet is usually a waste of time.
     
  10. baza

    baza Member

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    vy commodores dont have drum brakes , apart from the handbrake shoe assembly which does not operate from the footbrake. just remember "vc commodore" we can all contribute to this forum and my point still is , warped front rotors show up with pulsating thru the footbrake when footbrake is applied. there would have to be something seriusly wrong with the front end to make the steering wheel shake when applying the footbrake. lets all try to get along.......cheers again.
     
  11. vc commodore

    vc commodore Well-Known Member

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    I'm not insunuating VY's have drum brakes, as I am aware they have a disc brake assembley in the rear (with the exception of the handbrake assembly).....I was using that as an example how the rears effect the brake pedal, rather than the fronts.

    My experience has shown front rotors being warped creates the steering wheel wobble under braking.....Also consider the OP has also replaced the rear rotors and brake pads, yet he has only replaced the front brake pads, not the rotors.

    Of course there is a chance I am wrong.....I'm just using logic from what the op has written and personal experience.....Only the OP can say whether replacing/or machining the front rotors solved the issue or not.....Time will tell, so others can look back at this thread if they have a similar issue down the track
     
  12. jlc85

    jlc85 New Member

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    my money is on warped front rotors , my vy did the same thing ..
     
  13. Sdel179

    Sdel179 Member

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    I have noticed the same thing with my VY..it's not there all the time but when I brake I feel the steering wheel shake at times and I can feel it in the brake pedal as well..and around the 100k mark notice vibrations.. I have swapped my mags over to 17s and that didn't change anything making me think it's more then a wheel balance issue..I Have at times noticed when turning right at slow speeds a clunk sound that sounds like it's coming from the front drivers side wheel area.. I need to bite the bullet and get it looked at $$$ I have been reading about caster rod issues as well.. I need to get someone to look for front wheel movement when I hit the brakes I was told by a mechanic..
     
  14. jlc85

    jlc85 New Member

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    clunk under ur wheel can be the sway bar link bushes mate , that's what I thought it was in mine but turned out to be the ball joint on the bottom of the link was flogged out causing the clunk , there $ 20 each at supercheap for the whole sway bar link , piece of piss to fit
     
    Last edited: Jan 21, 2016

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