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  1. #1
    Neil_S's Avatar
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    S4 Brake upgrade

    I've read a few threads about people upgrading the B6 to S4 brakes and this got me very interested as a next project after recently installing the Kw V2 coilovers.

    I have the 1.9 TDi with the 288mmx25mm brake discs and as I understand it you can upgrade these to the B5 or B6 S4 brakes with the correct carriers and calipers?

    Do any of the other cars in the VAG family have the same parts? I heard that the MKIV R32 may have suitable parts?

    For the people that have done this upgrade, where did you get hold of your parts from? I assume alot of people got them second hand?

    My plan was to get a set second hand and probably have the calipers powder coated and put in a new set of seals and possibly buy new discs and pads depending on condition.

    Would be interested to hear anybody that has experience of doing this upgrade, if it was worth it.

    I am interested in upgrading the brake lines at the same time and moving to DOT 5.1.

    Anybody know of anybody parting with a set of S4 brakes? :D

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  3. #2
    Elberoth's Avatar
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    You may also get B7 A4 brakes, which are 320mm.
    Audi A4 B6 1.8T
    Go: Sportec K04 Stage II | ATP manifold | Milltek cat-back | Dual IC | JJ TIP | Ecode TP | S4 rear sway | Brembo ORO rotors | Ferodo DS2500 pads
    Show: full S4 body conversion | bi-xenons

  4. #3
    bubstar's Avatar
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    Quote Originally Posted by Neil_S
    I've read a few threads about people upgrading the B6 to S4 brakes and this got me very interested as a next project after recently installing the Kw V2 coilovers.

    I have the 1.9 TDi with the 288mmx25mm brake discs and as I understand it you can upgrade these to the B5 or B6 S4 brakes with the correct carriers and calipers?

    Do any of the other cars in the VAG family have the same parts? I heard that the MKIV R32 may have suitable parts?

    For the people that have done this upgrade, where did you get hold of your parts from? I assume alot of people got them second hand?

    My plan was to get a set second hand and probably have the calipers powder coated and put in a new set of seals and possibly buy new discs and pads depending on condition.

    Would be interested to hear anybody that has experience of doing this upgrade, if it was worth it.

    I am interested in upgrading the brake lines at the same time and moving to DOT 5.1.

    Anybody know of anybody parting with a set of S4 brakes? :D
    Yes, yes, B5 isn't the same and no you can't have my brakes

    It all bolts straight on, the R32 uses the same calipers and discs (345mm) I would guess the 3.2 A3 too. It would be better to get a full S/H set up with the disc backing plates too and the A/S4 use a different little bracket for the pad out loom.

    As for performance, fantastic. No issues all fine. A great 'factory' upgrade that really works...........



    BUB
    A4 Avant S-Line quattro - Avus Silver/Silver Half Leather *240ps*346nm* - a few choice mods. Now Stared up ;-)

  5. #4
    jase0851's Avatar
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    are they 19,s bub ?

  6. #5
    bubstar's Avatar
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    Quote Originally Posted by jase0851
    are they 19,s bub ?
    Factory 18's It's funny sometimes they look huge and sometimes not.

    This is my fave' pic at the moment..........



    They look like 18's here.

    BUB
    A4 Avant S-Line quattro - Avus Silver/Silver Half Leather *240ps*346nm* - a few choice mods. Now Stared up ;-)

  7. #6
    Neil_S's Avatar
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    I guess I better monitor the Audi/VW classifieds, anybody got any favs?

    Bub they look perfect, fill the wheels alot better.

    How much should I be looking to spend on a used kit roughly?

  8. #7
    james0808's Avatar
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    You cannot use MKIV R32 but you can use MKV R32.
    Look here for B5 and B6 brakes fitted to A4 TDI.
    S4 brakes fitted on to A4 TDI
    Definatly a worthwhile upgrade.

  9. #8
    Neil_S's Avatar
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    Thanks James, very useful.

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    What are the dimensions of the S4 front brakes and how does that compare to the stock (on the 3.0v6)?

  11. #10
    Elberoth's Avatar
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    Quote Originally Posted by dan_b
    What are the dimensions of the S4 front brakes and how does that compare to the stock (on the 3.0v6)?
    1.8T - 288mm
    3.0 - 312mm
    B7 A4 - 320mm
    S4 - 345mm
    Audi A4 B6 1.8T
    Go: Sportec K04 Stage II | ATP manifold | Milltek cat-back | Dual IC | JJ TIP | Ecode TP | S4 rear sway | Brembo ORO rotors | Ferodo DS2500 pads
    Show: full S4 body conversion | bi-xenons

  12. #11
    jase0851's Avatar
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    are the 1.8t 190 288mm elb ?

  13. #12
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    Quote Originally Posted by Elberoth
    1.8T - 288mm
    3.0 - 312mm
    B7 A4 - 320mm
    S4 - 345mm
    Marvellous - just to double check, it's a straightforward drop in swap for S4 discs and the S4 calipers onto the B6 stock caliper carrier?

    Those S4 calipers are a bit funky though, they seem still to be single-piston floating calipers? Is there a straightforward 4/6-pot alternative, or does that require more significant changes?

    Would 345mm with the S4 caliper fit inside a 17" alloy or does that necessitate going up to 18"s?

    Can anyone explain why wheel measurements are such a mish-mash of metric and imperial!

  14. #13
    Neil_S's Avatar
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    You need new carriers for the S4 calipers too.

  15. #14
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    How much could an S4 front brake kit be sourced for then?

  16. #15
    bubstar's Avatar
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    Quote Originally Posted by jase0851
    are the 1.8t 190 288mm elb ?

    No Jase, 1.8t 190's have 312mm front discs.

    BUB
    A4 Avant S-Line quattro - Avus Silver/Silver Half Leather *240ps*346nm* - a few choice mods. Now Stared up ;-)

  17. #16
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    Quote Originally Posted by dan_b
    How much could an S4 front brake kit be sourced for then?
    There is some prices in the link i posted.

  18. #17
    Elberoth's Avatar
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    Quote Originally Posted by dan_b
    Marvellous - just to double check, it's a straightforward drop in swap for S4 discs and the S4 calipers onto the B6 stock caliper carrier?
    Yes.

    Quote Originally Posted by dan_b
    Those S4 calipers are a bit funky though, they seem still to be single-piston floating calipers?
    Yes.

    Quote Originally Posted by dan_b
    Is there a straightforward 4/6-pot alternative, or does that require more significant changes?
    You may gat the RS4 setup, but it costs more than comparable Brembo kit, and the choice of pads is very limited.

    Quote Originally Posted by dan_b
    Would 345mm with the S4 caliper fit inside a 17" alloy or does that necessitate going up to 18"s?
    It fits SOME 17' wheels.

    Quote Originally Posted by dan_b
    Can anyone explain why wheel measurements are such a mish-mash of metric and imperial!
    This is a german car. ALL measurements are metric.
    Audi A4 B6 1.8T
    Go: Sportec K04 Stage II | ATP manifold | Milltek cat-back | Dual IC | JJ TIP | Ecode TP | S4 rear sway | Brembo ORO rotors | Ferodo DS2500 pads
    Show: full S4 body conversion | bi-xenons

  19. #18
    jase0851's Avatar
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    Quote Originally Posted by bubstar
    No Jase, 1.8t 190's have 312mm front discs.

    BUB
    cheers bub i thought they looked bigger than 288

  20. #19
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    Quote Originally Posted by Elberoth
    It fits SOME 17' wheels.
    This is a german car. ALL measurements are metric.
    Quite so, but wheels are still measured in inches, whilst tyres are a combination of metric (mm width), aspect ratio (as a % of overall diameter) and the diameter of the tyre's inner profile is given in inches! Nuts!

  21. #20
    james0808's Avatar
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    Quote Originally Posted by dan_b

    Those S4 calipers are a bit funky though, they seem still to be single-piston floating calipers?
    B6 are a single piston with 2 pads,B5 are twin piston with 4 pads,both floating calipers.

  22. #21
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    Floating calipers just don't float my boat up front to be honest - having to move the whole caliper assembly first in order to move the pad seems like the wrong way round to do things, especially having seen the size of those floating parts - those are big calipers.
    Above was made mention of a Brembo option - what bits are needed for that? Is it the usual find some 2nd hand calipers off a wrecked Porsche 911 trick?

  23. #22
    Neil_S's Avatar
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    Just for info, I was on the phone to vag parts earlier and it turns out that the B6 S4 caliper is around £110 + VAT each, not a bad price at all I thought. The carriers are about £60 + VAT each.

    Food for thought.

  24. #23
    Rocko's Avatar
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    Theres some S4 discs and calipers.

    Ranting about Audi Customer Service

  25. #24
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    Those are gorgeous wheels Roko what are they?

  26. #25
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    @Neil, those are good prices indeed - esp the caliper carriers, I was expecting those to be in the £100 arena?

  27. #26
    Rocko's Avatar
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    Theyre Carlsson replicas.

    Awesome rim, but id really love 20"s

    Really must get my calipers painted in our standard colours of Subaru STI pink, as seen on my mates R32 GTR Skyline.

    Ranting about Audi Customer Service

 

 

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