Brake Upgrade???

[Philip_98]

Does any body know if the Q5 brembos are a direct fitment for the b8 a4?

Cheers,

 

[junchen]

Yes they are. I had the oem q5 3.0tdi 4 pot brembo on my a4 b8. Runs like a dream. You need to order s4 rotors (345mm) and matching oem brembo pads (not s4 pads).

 

[Philip_98]

Perfect, cheers

 

[Slackworth]

Better still go for Yellowstuff pads

There is a 320mm Brembo option as well if you want to keep costs a little lower as the S4 caliper carriers are quite expensive. Depends what you're starting with though.

 

[Skard]

Interested to know for sure if these larger (345mm disc) calipers clear the OEM S4 18" wheels with ET43 - anyone know?

 

[Philip_98]

would be looking for the direct replacement so assume that would be the 320mm option?

 

[Slackworth]

Standard S4 345mm discs will clear a 17" rim so an 18" should easily be fine.

As for 320mm being a direct swap, it depends what you have now. Can you have a look at your data sticker and find the code starting 1L and tell us what the third letter is?

 

[Skard]

I have 345's, I mean the bulkier caliper fowling the rim spokes. Anyone got these calipers and 18s?

 

[Slackworth]

I think @desertstorm may have these...

Come on down

 

[xpoweruk]

I have these on my S4 with 18" Wolfrace alloys

Plenty of room

 

[Philip_98]

front brakes are 320mm 1LA

 

[Skard]

Sorry for taking this topic sideways a little, but I just used a template I found for the larger versions and it definitely hits the spoke on my OEM ET47 18's

 

[Slackworth]

front brakes are 320mm 1LA

If you go for 320mm the calipers are straight swap. Part numbers are 8R0615107 / 8R0615108.

 

[Philip_98]

Perfect cheers!!

 

[Jeebsy]

Sorry to bump an old thread but there's some 320mm Q5 Brembos for sale near me and the temptation is strong.

I have 1LA brakes so the Q5 calipers should be a straight bolt on from what i've read, obviously they look a lot nicer than the B8 3.0 TDI calipers, but would there be any performance improvement? I don't drive especially fast and only drive on the road, obviously I don't need upgraded brakes, but four pot would be better than two...?

@desertstorm there were a couple of other threads you talked about these, any thoughts?

 

[DirtyG13]

Hi everyone

The information you have put in here so far has been really helpful, but does it matter what year Q5 calipers I get, or will any fit my A4 B8.5?
Plus I would like to get 345mm rotors will this make a difference?

 

[GrizzlyS4]

View: https://youtu.be/rn7zoI-cKhw?si=dLMv7vT1X-rnCMsK

 

[DirtyG13]

View: https://youtu.be/rn7zoI-cKhw?si=dLMv7vT1X-rnCMsK

thanks for the video it was so helpful, I now know exactly what I am looking for.

 

[GrizzlyS4]

I was going to do the macan 4 pots but I found this on audizine. 6 pot Akebone from the B9 S4 with A6 C7 356mm x 34mm discs.

Awaiting parts to fit. Link below for a thread over there for those interested.

Completed: B9 S4 Caliper Installation

Finished results teaser https://i.imgur.com/2GciWoV.jpg Hi guys. I wrote this post to share my experience installing B9 S4 front calipers on my 2014 B8.5. My brake pads were worn down enough to trigger the brake warning, so I used that as an excuse to upgrade my brakes. I got the...

www.audizine.com

 

[Simon]

I was going to do the macan 4 pots but I found this on audizine. 6 pot Akebone from the B9 S4 with A6 C7 356mm x 34mm discs.

Awaiting parts to fit. Link below for a thread over there for those interested.

Completed: B9 S4 Caliper Installation

Finished results teaser https://i.imgur.com/2GciWoV.jpg Hi guys. I wrote this post to share my experience installing B9 S4 front calipers on my 2014 B8.5. My brake pads were worn down enough to trigger the brake warning, so I used that as an excuse to upgrade my brakes. I got the...

www.audizine.com

I did this on mine about 2 years ago now, works really well

 

[GrizzlyS4]

Original guide on audizine recommended below.

• M12-1.25 x 80mm JIS Hex Head Flange Bolt Class 10.9 Zinc JIS B 1189)
• Amazon.com

However the pictures above with the original bolt and the new one side by side are the same length so with the spacer the new bolt only grabs half of the carrier.

New bolts ordered are.

M12-1.25 X 100Mm JIS Hex Head Flange Bolt - Small Head, Class 10.9 Zinc​

https://amzn.eu/d/0IqWTpo

I did this on mine about 2 years ago now, works really well

Did you use the 80mm bolts without any issues, Or go longer?

 

[Simon]

I seem to recall buying specific spec bolts to use that were non OEM - the details are all in my rebuild thread

 

[Simon]

Looks like I bought hi tensile steel bolts at 80mm

 

[GrizzlyS4]

View attachment IMG_9266.jpegView attachment IMG_9267.jpeg

There on. First side was an hour. Second in half an hour.

 

[GrizzlyS4]

View attachment IMG_9267.jpegView attachment IMG_9266.jpeg

 

[GrizzlyS4]

View attachment IMG_9276.jpegView attachment IMG_9275.jpeg


S4 B9 6 pot calipers parts list for fitting to S4 B8/8.5

Brakes:-

Audi S4 B9 8W Brake Calipers 6 POT part numbers:- 8W0615105ES and 8W0615106ES (akebono 6 pot calipers - Google Search) eBay I got mine for £600.

MTEC Disc for audio A6/C7 356mm x 34mm:-

https://www.mtecbrakes.com/brake-discs/audi/a6-c7-2011/a6-3-0-bitdi-quattro-08-14 £117.99

MTEC Pads:-

https://www.mtecbrakes.com/mtecpad4926-mtec-brake-pads.html £41.39

MTEC Performance Brake Hoses AU4P-0328

https://www.mtecbrakes.com/audi-s4-quattro-3-0-v6-2009-zinc-plated-mtec-performance-brake-hoses.html £69.99


Caliper bolts (needed to add the spacers above):-

M12-1.25 X 80Mm JIS Hex Head Flange Bolt Class 10.9 Zinc JIS B 1189

https://amzn.eu/d/eEUWL2q

£14.30 each x 4 needed = £57.20

I didn’t need the spacers however others have needed and used them.

Spacer for caliper carrier (x4):-

M12 Stainless Steel Spacer / Collar Stand off Spacers 25mm (length 12mm)https://www.ebay.co.uk/itm/23467705...ar=534386676734&widget_ver=artemis&media=COPY£14.00


Extras:-

3L Brake System Clutch Fluid Pressure Bleeder Bleeding Device Kit Car Bleed Tool

https://www.ebay.co.uk/itm/31496131...CtWYJS0QXK&var=&widget_ver=artemis&media=COPY
£21.63

ATE RACING FLUID Type 200 DOT4 1L Performance Racing Brake Fluid

https://www.ebay.co.uk/itm/31496131...CtWYJS0QXK&var=&widget_ver=artemis&media=COPY
£20.99

Brake & Clutch Cleaner Spray 600mL Aerosol Removes Oil, Grease, Pats Degreaser

https://www.ebay.co.uk/itm/20471243...CtWYJS0QXK&var=&widget_ver=artemis&media=COPY
£5.99

Total spend = £949.18 not to bad for a single piston to a six each side upgrade.

Here’s a YouTube video I found:

View: https://youtu.be/wWCaSlqpzZ0?si=gOwwNyOl_g8SMc7F