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Juddering under heavy braking

X30 Mar 21, 2011

  1. X30

    X30 New Member

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    I have noticed bad juddering while braking at around 70 mph. The car seems to shake from the nearside front.

    Any ideas?

    1.8T quattro sport:crying:
     
  2. scott b

    scott b Active Member VCDS Map User

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    first port of call would be brake discs
     
  3. quattrojames

    quattrojames Moderator Staff Member Moderator Audi A6 Audi Avant Owner Group

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    Agreed, warped discs by the sound of it.

    Or potentially wheels out of balance, although you'd probably have noticed that anyway.
     
  4. Alan H

    Alan H Need a V8 or Bi-Turbo.......

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    It may be that your pads are really low too. Low pads can make it feel like warped discs, but that may not be the case......
     
  5. 666markyboy

    666markyboy Well-Known Member

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    Did you sort this ??? i have the same problem
     
  6. V8Guzzler

    V8Guzzler Active Member

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    Play in control arms can warp discs, so check this also.
     
  7. 666markyboy

    666markyboy Well-Known Member

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    begining to think mine might be a balljoint of some type as i had an advisory on it's MOT a couple of months back ..... fitting some spacers may have accentuated the problem ... need to check MOT tonight to find which ones he was on about as i believe there's about 3 on either side ??
     
  8. AliGod78

    AliGod78 Member

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    Was gonna say, worn arms? Whats the mileage?
     
  9. 666markyboy

    666markyboy Well-Known Member

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    110,000 jacked it up tonight and i really cant feel anything but like i said they lower balljoints were an advisory ..... i can also hear the disc's catching in one particular place when i spin the wheels which might sugest they are a bit warped .... i'll change it all out over the next couple of months and keep ya posted
     
  10. 666markyboy

    666markyboy Well-Known Member

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    Fixed today by fitting these and some new pads ...... you should have seen the state of the old disc's i'm quite shocked it passed it MOT.... they looked fine from the front but the backs were nasty

    [​IMG]


    [​IMG]


    So turns out i don't need any control arms just yet..... Happy chap
     
  11. Stubie

    Stubie Member

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    What docs are those , if you don't mind me asking ??
     
  12. 666markyboy

    666markyboy Well-Known Member

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    The Disc's ???? they are just a cheapo's off eBay... infact probably cheaper than standards discs from some places and i'm under no illusions that they are just the standard disc's drilled and grooved .... some may poo poo this but i don't drive it hard, it's no track car and the grooves and drilling will help illiminate water build up that tends give me a bad pedal when braking at the end of my motorway journey in the mornings as i can drive a good 30 miles without touching the brake pedal and if it's been raining it can be a bit scary.... here's a link to the supplier Audi A4 1995-2007 inc. TDi & Quattro Drilled & Grooved Sports FRONT Brake Discs | eBay
     
  13. hades-

    hades- Well-Known Member VCDS Map User

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    i had them on a gsi once
    never touch them again
    you really do get what you pay for with those
     
  14. AudiLeon

    AudiLeon Well-Known Member VCDS Map User

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    Look like mintex?
     
  15. V8Guzzler

    V8Guzzler Active Member

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    Did you not go for the mtec ones?
     
  16. 666markyboy

    666markyboy Well-Known Member

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    well the way i look at it ..... they were cheap and will do for now.....and they cant be any worse than what i took off.... i'll post a pic tomorrow.....they were bad ..... these look like seconds to me ...not ground very well and a few dings and bangs on them that i had to clean up but the seller had 99.5% rep so i'll take the risk....as i said i don't drive it hard
     
  17. hades-

    hades- Well-Known Member VCDS Map User

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    i have mtec on the avant not my choice were fitted already
     
  18. V8Guzzler

    V8Guzzler Active Member

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    Performing well in my S4, much better than stock and they look damn good to.. They also make a great hummin noise when you brake firmly from high speed..
     

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