1. This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.

Juddering under heavy braking

Discussion in 'A4/A4 cabriolet/S4 forum(B6 chassis)' started by X30, Mar 21, 2011.

  1. X30

    X30 New Member

    Joined:
    Aug 30, 2010
    Messages:
    6
    Likes Received:
    0
    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. Advert Guest Advertisement


  3. scott b

    scott b Active Member
    VCDS Map User

    Joined:
    Jan 19, 2010
    Messages:
    1,254
    Likes Received:
    3
    first port of call would be brake discs
     
  4. quattrojames

    quattrojames Moderator
    Staff Member Moderator Audi A6 Audi Avant Owner Group

    Joined:
    Mar 28, 2008
    Messages:
    14,043
    Likes Received:
    562
    Agreed, warped discs by the sound of it.

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

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

    Joined:
    Aug 14, 2010
    Messages:
    457
    Likes Received:
    7
    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......
     
  6. 666markyboy

    666markyboy Well-Known Member

    Joined:
    Mar 17, 2008
    Messages:
    1,196
    Likes Received:
    44
    Did you sort this ??? i have the same problem
     
  7. V8Guzzler

    V8Guzzler Active Member

    Joined:
    Mar 4, 2011
    Messages:
    575
    Likes Received:
    26
    Play in control arms can warp discs, so check this also.
     
  8. 666markyboy

    666markyboy Well-Known Member

    Joined:
    Mar 17, 2008
    Messages:
    1,196
    Likes Received:
    44
    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 ??
     
  9. AliGod78

    AliGod78 Member

    Joined:
    Mar 21, 2012
    Messages:
    52
    Likes Received:
    4
    Was gonna say, worn arms? Whats the mileage?
     
  10. 666markyboy

    666markyboy Well-Known Member

    Joined:
    Mar 17, 2008
    Messages:
    1,196
    Likes Received:
    44
    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
     
  11. 666markyboy

    666markyboy Well-Known Member

    Joined:
    Mar 17, 2008
    Messages:
    1,196
    Likes Received:
    44
    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
     
  12. Stubie

    Stubie Member

    Joined:
    May 19, 2011
    Messages:
    136
    Likes Received:
    0
    What docs are those , if you don't mind me asking ??
     
  13. 666markyboy

    666markyboy Well-Known Member

    Joined:
    Mar 17, 2008
    Messages:
    1,196
    Likes Received:
    44
    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
     
  14. hades-

    hades- Yorkshire & Humber Rep.
    Regional Rep VCDS Map User

    Joined:
    Jul 8, 2008
    Messages:
    9,494
    Likes Received:
    646
    i had them on a gsi once
    never touch them again
    you really do get what you pay for with those
     
  15. AudiLeon

    AudiLeon Well-Known Member
    VCDS Map User

    Joined:
    Nov 24, 2009
    Messages:
    2,070
    Likes Received:
    104
    Look like mintex?
     
  16. V8Guzzler

    V8Guzzler Active Member

    Joined:
    Mar 4, 2011
    Messages:
    575
    Likes Received:
    26
    Did you not go for the mtec ones?
     
  17. 666markyboy

    666markyboy Well-Known Member

    Joined:
    Mar 17, 2008
    Messages:
    1,196
    Likes Received:
    44
    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
     
  18. hades-

    hades- Yorkshire & Humber Rep.
    Regional Rep VCDS Map User

    Joined:
    Jul 8, 2008
    Messages:
    9,494
    Likes Received:
    646
    i have mtec on the avant not my choice were fitted already
     
  19. V8Guzzler

    V8Guzzler Active Member

    Joined:
    Mar 4, 2011
    Messages:
    575
    Likes Received:
    26
    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..
     

Share This Page