Archive for AudiSRS.com The place for Performance Audi
 


       AudiSRS.com Forum Index -> Audi S4, S5, RS 5, RS 4 (B8) quattro
quattrokhan5

B8 S4 oem brakes

Hi Guys,

Thinking about replacing all the discs and pads on my car, ideally want to stay oem as I still want to be able to use the adaptive cruise control feature as I believe if I change calipers this will no longer operate?

Are there any decent options out there? i.e. better discs and pads to work with the stock caliper?

Thanks
Adrian E

You can go to RS5 calipers relatively easily, although clearance becomes a major issue.

I can't see how ACC operation could be screwed by a caliper change - would've thought that was ABS controller specific?

I haven't checked part numbers but assuming the S4 and S5 calipers and mountings are the same I'm sure there's a few folk who've changed to the RS setup
xpower

Not sure about ACC,but I went with the Q5 4 pot brembo calipers.They use the same disc as the single piston floating caliper on the S4 but give improved braking IME

IIRC the calipers cost around £630 delivered from Stoke Audi
xxx_mojo_xxx

I've got the RS5 brake setup and there's been no issue with ACC.  Perhaps I haven't noticed, what was the specific issue that you were advised about?
big eck

Mtec discs are great value and work well. I had a set on my old Cupra and will be using them on the S4 when it's time to change them. I used red stuff pads along with Typ200 brake fluid and never had an issue. They performed brilliant as well.
Dane

No problems experienced here with OEM brakes and 483ps, are you planning on tracking it?
quattrokhan5

Adrian E wrote:
You can go to RS5 calipers relatively easily, although clearance becomes a major issue.

I can't see how ACC operation could be screwed by a caliper change - would've thought that was ABS controller specific?

I haven't checked part numbers but assuming the S4 and S5 calipers and mountings are the same I'm sure there's a few folk who've changed to the RS setup


What do you mean by clearance? I have OEM 19" wheels, will I need spacers if I went through this route?  

I am not sure how ACC actually works but I was thinking the caliper had some sort of relationship with it, I think "xxx_mojo_xxx" has answered this  
quattrokhan5

xpower wrote:
Not sure about ACC,but I went with the Q5 4 pot brembo calipers.They use the same disc as the single piston floating caliper on the S4 but give improved braking IME

IIRC the calipers cost around £630 delivered from Stoke Audi


Sounds like an option, do you get fade after a few harsh stops?  I would have thought you would also need bigger discs but guess you get more pad area on the same disc so more bite hence better braking.....
quattrokhan5

xxx_mojo_xxx wrote:
I've got the RS5 brake setup and there's been no issue with ACC.  Perhaps I haven't noticed, what was the specific issue that you were advised about?


Thanks, I have heard a lot of negatives about this set up which is one of the reasons why I am holding off. Have you experienced any issues so far? Where did you buy your set up from?  
quattrokhan5

Dane wrote:
No problems experienced here with OEM brakes and 483ps, are you planning on tracking it?


Not planning on tracking it, had the s-tronic oil changed recently and Audi has advised I need to change my brakes very soon so am thinking about the options.  Maybe worth a little upgrade.

What discs/pads are you using and do you get any fade after a few stops?
quattrokhan5

big eck wrote:
Mtec discs are great value and work well. I had a set on my old Cupra and will be using them on the S4 when it's time to change them. I used red stuff pads along with Typ200 brake fluid and never had an issue. They performed brilliant as well.


Where do you buy them from mate?  have your heard of Zimmerman? are they any good?  
xpower

I've not experienced any fade up to now.

I also did some testing using the P3gauge 60-0 braking test.

OE brakes with Yellow stuff pads
60-0 in 2.7 seconds. on a dry road/dry day


Q5 Brembo 4pots Yellow stuff pads

60-0 in 2.52 seconds on a dry road after rain

Same road & same place was used.
Good comparison as the compounds are the same too
xpower

S4 pad size



Q5 pad size



quattrokhan5

xpower wrote:
I've not experienced any fade up to now.

I also did some testing using the P3gauge 60-0 braking test.

OE brakes with Yellow stuff pads
60-0 in 2.7 seconds. on a dry road/dry day


Q5 Brembo 4pots Yellow stuff pads

60-0 in 2.52 seconds on a dry road after rain

Same road & same place was used.
Good comparison as the compounds are the same too


Good info mate

Do you have ACC?  How does your pedal feel with the new calipers?
xpower

I don't have ACC mate
Dane

quattrokhan5 wrote:
Dane wrote:
No problems experienced here with OEM brakes and 483ps, are you planning on tracking it?


Not planning on tracking it, had the s-tronic oil changed recently and Audi has advised I need to change my brakes very soon so am thinking about the options.  Maybe worth a little upgrade.

What discs/pads are you using and do you get any fade after a few stops?


Just standard oem items, Seb (stimpy) and I had a pretty full on blast to Stowe school before the noggy meet and I didn't struggle at all. When I had my b5 rs4 I had some big 8 pots on the b5 rs4 and whilst they stopped you the pedal feel was a bit crap because all of a sudden the master cylinder had to push 16 Pistons on the front wheels instead of just two, granted they were small Pistons but it still wasn't great.
quattrokhan5

Dane wrote:
quattrokhan5 wrote:
Dane wrote:
No problems experienced here with OEM brakes and 483ps, are you planning on tracking it?


Not planning on tracking it, had the s-tronic oil changed recently and Audi has advised I need to change my brakes very soon so am thinking about the options.  Maybe worth a little upgrade.

What discs/pads are you using and do you get any fade after a few stops?


Just standard oem items, Seb (stimpy) and I had a pretty full on blast to Stowe school before the noggy meet and I didn't struggle at all. When I had my b5 rs4 I had some big 8 pots on the b5 rs4 and whilst they stopped you the pedal feel was a bit crap because all of a sudden the master cylinder had to push 16 Pistons on the front wheels instead of just two, granted they were small Pistons but it still wasn't great.


I know what you mean, I had the same 8 pots on my B5 and pedal feel was not great.    

I heard ECS or some company sell some uprated discs that work with the stock caliper? wondering if anyone has experienced them?
       AudiSRS.com Forum Index -> Audi S4, S5, RS 5, RS 4 (B8) quattro
Page 1 of 1