Picked up my new car this weekend........955hp V10 Audi RS6! (HP figure updated 08/10/22)
- Thread starter ianh
- Start date
New brakes arrived!!!!
AP Racing 410mm discs mated to Radi-Cal CP8522 Calipers mounted on custom made brackets by BG Developments who do all of AP Racings Customs work. I've also got AP Racings DS-25pads (Ferodo DS2500 compound), HEL brake lines and Castrol SRF fluid.
I'm doing the ASDA charity trackday again on the 6th so, now I've got an extra 180hp over last year, we'll see how they cope with multiple 175+ to 30mph stops. Last year when I was at 730hp the OEM Caliper with AP- Racing 390mm discs, DS2500 pads and ATE Superblue fluid it did 49 160+ to 30mph stops with only a tiny bit of fade in stopping power but a longer pedal travel throughout the day so I'm hoping for much better from these.
and one to show the size of these things, thats a standard pint glass next to it!
AP Racing 410mm discs mated to Radi-Cal CP8522 Calipers mounted on custom made brackets by BG Developments who do all of AP Racings Customs work. I've also got AP Racings DS-25pads (Ferodo DS2500 compound), HEL brake lines and Castrol SRF fluid.
I'm doing the ASDA charity trackday again on the 6th so, now I've got an extra 180hp over last year, we'll see how they cope with multiple 175+ to 30mph stops. Last year when I was at 730hp the OEM Caliper with AP- Racing 390mm discs, DS2500 pads and ATE Superblue fluid it did 49 160+ to 30mph stops with only a tiny bit of fade in stopping power but a longer pedal travel throughout the day so I'm hoping for much better from these.
and one to show the size of these things, thats a standard pint glass next to it!
Soldato
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You can foul plugs till kingdom come, but you only go lean once.
Soldato
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Direct injection is sooty aswell.
Man of Honour
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Finally decent brakes 
Will be interesting to see how they perform vs the old when put to the test
Will be interesting to see how they perform vs the old when put to the test
Soldato
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Did I see you today Ian? Just outside of Blackboys/Uckfield @ half 8. There was a grey Audi estate with big pipes and a Pistonheads sticker that drove past me as I was turning into work. I was in the Alfa
Soldato
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Last "scale" pic until they're fitted
So how quick does your face hit the windscreen when you stomp on the brakes
Soldato
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I remember Ian explained that non ceramics were better for some reason but I can't remember why 
There is a good reason though!
There is a good reason though!
Cleisthenes - Not me, but now I need to find this doppleganger, kill him and absorb his powers until I am the last one remaining - THERE CAN ONLY BE ONE!!!!
Housey - There's two issues with Audi's OEM ceramics for me -
1. Mainly cost at £14000 new or £6000 for an unknown quality 2nd hand set.
2. Audi's V10 RS6/V12 Q7 1st Gen ceramics made by Alcon not being ideal for track driving which I'll be doing more of now.
Audi's ceramic design for the V10 RS6 and Q7 V12 TDI is made by Alcon and are a 1st Gen CCM laminate design (thin ceramic faces with a carbon/ceramic core) which copes really well when it's allowed to cool after a few minutes of hooning (i.e. perfect for the road) but on the track you keep the temps at 800-900'c (ceramics operating temp) and if you do that for more than about 10 minutes without stopping then the laminate resin starts to fail and the layers separate without you being able to feel the difference until it's too late.
After it separates the harder "ceramic" layer can't pass the heat on to the carbon core as well as before and it starts to oxidise and smear the ceramic layer as the temps rise above 900'c. Then you're left with a minimum £6k-8k bill to replace the front discs and pads or £14k if it's all four need doing.
As not many RS6's go on the track it's not a well documented issue but there's a few on forums that have a killed a set going around the 'Ring'. I'm happy with having to spend £600 on a new set of steel discs which will tell me when they're getting too hot.
From what I gather chatting to SGL Carbon who makes & refurbs C/Sic CCM discs, those particular V10//V12 Audi brakes used a thinner Ceramic face than other manufacturers (cost saving) and are more effected by this than someone like Porsche who use a different process for their discs (PCCB rather than CCM etc).
They've since changed their manufacturer from Alcon to Brembo and are now "better" but still using CCM process so not as good as other car makers on the track.
Housey - There's two issues with Audi's OEM ceramics for me -
1. Mainly cost at £14000 new or £6000 for an unknown quality 2nd hand set.
2. Audi's V10 RS6/V12 Q7 1st Gen ceramics made by Alcon not being ideal for track driving which I'll be doing more of now.
Audi's ceramic design for the V10 RS6 and Q7 V12 TDI is made by Alcon and are a 1st Gen CCM laminate design (thin ceramic faces with a carbon/ceramic core) which copes really well when it's allowed to cool after a few minutes of hooning (i.e. perfect for the road) but on the track you keep the temps at 800-900'c (ceramics operating temp) and if you do that for more than about 10 minutes without stopping then the laminate resin starts to fail and the layers separate without you being able to feel the difference until it's too late.
After it separates the harder "ceramic" layer can't pass the heat on to the carbon core as well as before and it starts to oxidise and smear the ceramic layer as the temps rise above 900'c. Then you're left with a minimum £6k-8k bill to replace the front discs and pads or £14k if it's all four need doing.
As not many RS6's go on the track it's not a well documented issue but there's a few on forums that have a killed a set going around the 'Ring'. I'm happy with having to spend £600 on a new set of steel discs which will tell me when they're getting too hot.
From what I gather chatting to SGL Carbon who makes & refurbs C/Sic CCM discs, those particular V10//V12 Audi brakes used a thinner Ceramic face than other manufacturers (cost saving) and are more effected by this than someone like Porsche who use a different process for their discs (PCCB rather than CCM etc).
They've since changed their manufacturer from Alcon to Brembo and are now "better" but still using CCM process so not as good as other car makers on the track.
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To be frank if my Audi Ceramics were ruined after a few laps of the Ring Audi would be replacing them under warranty but I hear what you say. Many of the GT Porsche owners take them off for track use, mainly on the first generation ones which were problematical.