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RS4 BRAKES FOR S3 2007 REG?

Kelza Jan 20, 2011

  1. Kelza

    Kelza MODERATOR Staff Member Moderator Audi RS3

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  2. Ash B

    Ash B Well-Known Member

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    Cant see the links due to being in work. But guessing the TTRS ones are Jordans he a member on here may be worth pm him smudge_don i think his user name is. With RS4 brakes think you need 19s where with the TTRS you can use 10mm spacers at the front so they can be fitted with 18s. So i'd go for them and RS4 Oem discs are not the best i've heard aswell. But sure some of the other guys will be able to confirm if im wrong and advise you correctly.
    good luck
     
  3. sub39h

    sub39h Active Member

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    The bottom link is smudge_don's listing

    For that price those brakes are a STEAL. if you can afford them I'd snap them up. Plus there won't be any compatibility issues as the TT and your S3 share a chassis.

    DEFINITELY go for those TT brakes if a brake set up is what you're after.

    Also I bought his coilovers off him and he's a thoroughly nice bloke
     
  4. JamesS4cab

    JamesS4cab Well-Known Member

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    Agreed that the TTRS ones are easier but I have one question.

    I dont know what mods you have done to the car performance wise, so unless you are 2+/3, I really cant see the need for a big brake set up. If you havent done the performance mods, thats where I would spend my hard earned.

    Just my 2p worth.
     
  5. jungleman

    jungleman Well-Known Member

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    totally agree with what james has said, a BBK is a serious investment and if your not planing on big power then its a bit over kill... but looks amazing!
    if your going to keep the power standard then just put on some uprated pads and fluid as that should keep you sweet

    if you however defiantly going BBK then the RS4's will be a more powerful set up, but the rotors are seriously expensive when they come to be replaced and they may be heavier given their size over the TT set up. another down side with the RS4's you will need to get some brackets made up and that will be at least another £150 ontop of that price... TT set up looking pretty good now as its a real bargain!! and you also wont have to change your wheels with the TT's

    oh just remembered something else with the RS4's the centre bore on the RS4 is bigger then that on the S3 so you will have to have another adapter plate or custom bell made up so the fit properly

    the VWR's are meant to be amazing, if you want an opinion of them pm s3alex on here as he has a set or wait till this evening and ill tell you what they are like as mine are being fitted in the new couple of hours and i can tell you what they are like

    anyway hope that was of some help

    paolo
     
  6. N8

    N8 Kowalski Details VCDS Map User

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    I've got 4 pot R8 calipers up front on mine, with 310mm S3 brakes on the rear and I drive a "mapped" 2.0 TDI 140, my braking is ABSOLUTLEY PERFECT and remember, brakes are another "cosmetic mod" as well as safety, they always look nice behind the wheels :wub:

    My 2.0TDI brakes were AWFUL, even with stock power, so if you want to get them go for it! :eyebrows:

    How can big brakes be overkill, when they will always stop you quicker? :wacko:
     
    Last edited: Jan 20, 2011
  7. Dane

    Dane Had an 8L S3, a B5 RS4 now I have a B8 S4

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    :hubbahubba: theyre a bargain thats less than a Brembo GT junior kit for my 8L.
     
  8. jungleman

    jungleman Well-Known Member

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    the S3 brakes are generally very good, just suffer from a bit of fade on heavy use, so with stock power they are more then capable and will pull you up quicker then most out there... but there is always a want for better stopping power
     
  9. N8

    N8 Kowalski Details VCDS Map User

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    I didn't go for S3 brakes up front, as not feeling the look, wanted a proper brembo caliper...
     
  10. sub39h

    sub39h Active Member

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    if i had the money i'd be buying smudge_don's TT-RS brakes and painting them brembo red with the logos - they're brembo brakes after all
     
  11. jungleman

    jungleman Well-Known Member

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    with the S3 fronts, its more look then stopping as most of the caliper is just metal, but you cant beat the look of a pukka brake kit
    i was tempted to go R8 rears but would have cost too much and couldnt find any, hence the VWRs
     
  12. jungleman

    jungleman Well-Known Member

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    if i had gotten jords, they would have gone black, but with S3 decals, keep it looking stock.... till you hit the brakes haha
     
  13. sub39h

    sub39h Active Member

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    i couldn't do that, i don't drive an S3 lol
     
  14. jungleman

    jungleman Well-Known Member

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    haha thats a fair point then
    and anyway red on black will look amazing... well hope so as thats what im going to be having
    you would get a nice bit of visibility as well through your Pescaras
     
  15. sub39h

    sub39h Active Member

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    indeedy :)

    oh well i'm not planning on upping the power on my car at all anymore so i don't need a BBK lol
     
  16. beanoir

    beanoir Large Member

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    I wouldn't bother unless you have +400bhp and you're racing your car on the track.

    With a kit like the TTRS brakes with a whopper 370mm disc and bigger calipers etc, you are increasing the unsprung weight of the car (in the same way as fitting heavier wheels and tyres would), and also the rotational weight. Increasing the unsprung weight of the car will make it handle far worse, increasing the rotational weight will reduce your acceleration.

    If you want to test the theory, this is how I was taught. Wave your hand in the air, this respresents your standard wheels and brakes on your car moving with the suspension. Now hold a can of soup or bag of sugar and wave your hand in the same way, its much much harder to control your waving, this represents your car with larger and heavier wheels, tyres and brakes.

    So if you're not into major mods (anything up to a stage 2+) you will end up reducing your cars performance, apart from perhaps it's ability to stop on a 50p piece, which an S3 does pefectly well already.
     
  17. Bugsy_27

    Bugsy_27 Vorsprung Durch Technik

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    Good stuff, get some pics up too!
     
  18. jungleman

    jungleman Well-Known Member

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    i think you will find mate the TTRS set up is considerably lighter then the S3 set up, at least 5kg a corner... so just by fitting the TTRS set up the car will accelerate faster, brake harder and have better turn in
     
  19. jungleman

    jungleman Well-Known Member

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    haha dont worry there will be a write up and photos!!
     
  20. beanoir

    beanoir Large Member

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    Not with an increased rolling radius they're not. Just sticking them on the scales does not give the full picture, ask the experts.
     
  21. jungleman

    jungleman Well-Known Member

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    well as my VWRs have come off an S3 that was built by a racing driver and ive spoken to him about how it changes the feel of the car ill take his word for it
     
  22. sub39h

    sub39h Active Member

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    i read this, and whilst i don't at all disagree with the theory i think you need to go to the gym more :p
     
  23. N8

    N8 Kowalski Details VCDS Map User

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    TT-RS has too much pedal travel due to the size of the pistons
     
  24. beanoir

    beanoir Large Member

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    And I worked for a for brake manufactures and wrote a thesis on brake disc design whilst I was studying Industrial Desgin with Physics at university. I've posted on this forum in the past about my studies, have a hunt about and you'll find it.

    Once again it's down to opinions though I guess. You'll not find many rally cars with brakes much bigger than the TTRS mind, certainly is a reason for that. In fact they range from being 300mm to about 380mm dependant on application.

    If you're sticking those TTRS ones on, and the static weight of each side is only 10kg differencem, then you're probably right there won't be a huge difference, in fact in may even be slightly better if you're using them with standard size wheels. If you have to upgrade to 19" wheels, then it becomes pointless, as the 2 will cancel each other out.

    And after upgrading the fronts, if you haven't correctly calculated the rear bias (and upgraded to the correct spec if applicable) then there's always the potential for further reducing performance.
     
    Last edited: Jan 20, 2011
  25. beanoir

    beanoir Large Member

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    It was a BIG bag of sugar!!! ;)
     
  26. jungleman

    jungleman Well-Known Member

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    thats the advantage of the TT & VWRs, everything else can stay standard

    but as you have worked for a brake company ill politely stand down to your greater knowledge on the effects of them lol

    although the TT's are 25mm bigger i couldnt imagine they would make the handling etc worse, even tho the rotational weight is further out from the hub and how this would effect the gyroscopic effect of the wheel, but i refer again to my first sentence in this post lol
     
  27. JamesS4cab

    JamesS4cab Well-Known Member

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    N8 - you missed something from your post above. Please allow me to help you out:

    ".....and remember my car is all show and no go."

    :p
     
  28. JamesS4cab

    JamesS4cab Well-Known Member

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    Get some extra power with that money thats obviously burning a hole in your pocket!! You might like it!!
     
  29. beanoir

    beanoir Large Member

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    I think you're probably right, although i'm not inclined to get my calculator out, I never realised the S3 brakes were so damn heavy (just one more reason to get rid of it!) compared to the TTRS brakes. So yes, if you're staying stock wheel size, then the chances are that there should be a noticeable benefit. :anbet:

    On another note, that must be blinking close in terms of rotor inside wheel clearance?
     
  30. jungleman

    jungleman Well-Known Member

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    haha yea the S3's are 25kg a corner!! its crazy! the TTRSs are about 17 i think and the VWRs are a tiny 12 (and only running a 355 2 part disk)

    the clearance is tight, ive head some people have had to have the wheel weights moved over to clear the calipers lol but after doing that they havent had any issues
     
  31. N8

    N8 Kowalski Details VCDS Map User

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    Its not a Stage II plus S3 no, but it goes well for a diesel :wub:
     
  32. Kelza

    Kelza MODERATOR Staff Member Moderator Audi RS3

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    i know would you mean james want to start with the GT3071 turbo RS4 injectors,itg induction kit,etc,,etc..
     
  33. beanoir

    beanoir Large Member

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    25 kg a corner???? Thats nearly half the weight of my misses!!
     
  34. Kelza

    Kelza MODERATOR Staff Member Moderator Audi RS3

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    :lmfao:hi beanoir your lucky try 5x that for my misses i need to go out for drive on my own more power,more fun...
     
  35. jungleman

    jungleman Well-Known Member

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    haha told you they were heavy!!
    its all the metalwork they put round the actual caliper to make them look bigger then they really are, makes them look good, but at a massive expense!!
     
  36. beanoir

    beanoir Large Member

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    Removing the Misses from the car is the best all-round modifcation you can do to any car!! FACT!

    ....or just give her the car and buy another one!
     
  37. JamesS4cab

    JamesS4cab Well-Known Member

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    You know i'm only messing. :laugh:
     
  38. jungleman

    jungleman Well-Known Member

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    haha it does cut down on road noise i found!!

    easy for those who have an M3 sat there as well haha
     
  39. N8

    N8 Kowalski Details VCDS Map User

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    I know you are brother :wub:
     
  40. beanoir

    beanoir Large Member

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    and cabin noise...
     

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