R8 Brakes

**A4Maine-iac** · 12-16-2015 12:47 PM

So I am getting ready to pull the trigger on some slightly used R8 brakes front and rear. Are they the same specs as the RS4? I have 19's so clearing shouldn't be a issue. Has anyone done this with the R8's? What else would I need to source for the switch?

Thanks - Brett

**musasabi** · 12-16-2015 01:10 PM

No sir. I've had quite a lot of fun with my brakes, and from what I've learned, you're close, but no cigar. =)

**BCsniper** · 12-16-2015 01:16 PM

front calipers are the same as RS4

The rears will not bolt onto the S4 hubs without a bit of modifications. CHECKERED did a writeup on it.

**musasabi** · 12-16-2015 01:22 PM

Oh, yeah, I should've just written the bit that matters for you rather than linking. The discs have a different offset and center bore.

**A4Maine-iac** · 12-16-2015 01:49 PM

OK...so calipers will fit...but not the rotors?

**musasabi** · 12-16-2015 02:03 PM

That's been my understanding, on the fronts anyway.

But I'm sure the smart folks who told me will show up in this thread before long. =)

**A4Maine-iac** · 12-16-2015 02:06 PM

Yeah I read your last link. Couple members said the bore is different. Thanks peeps. The search continues.

**Mr. Corey** · 12-17-2015 04:32 PM

Just a heads up you really limit what kind of wheels you can run with massive calipers..... as i learned the hard way

Rs4 owners can get away with decent lips still with their phat fenders but not so much on the b6/7 s4

**A4Maine-iac** · 12-17-2015 04:44 PM

Thanks Mr. Corey. I think I found some TTRS calipers with floaters.

**JimmyBones** · 12-17-2015 04:47 PM

Originally Posted by A4Maine-iac

So I am getting ready to pull the trigger on some slightly used R8 brakes front and rear. Are they the same specs as the RS4? I have 19's so clearing shouldn't be a issue. Has anyone done this with the R8's? What else would I need to source for the switch?

Thanks - Brett

Nothing brakes wise will straight up bolt to a B6/7. The front R8 calipers will bolt up to a B6/7 with the correct brackets from Apikol. http://www.apikol.com/index.php/8-pi...-brackets.html

I have R8 front calipers with those brackets and RS4 front rotors with JHM lightweight rotor rings on my S4 that I got used from a member here a long time ago.

I also have a used set of R8 rear brake calipers from a local R8 guy that couldn't sell them and they will not clear anything in the rear of a B6/7 without a custom made bracket. The OEM rear R8 brakes are huge too with four piston calipers and 356 mm rotors. For example, the Stoptech rear RS4 BBK uses 355 mm rotors and four piston calipers. The R8s use a separate parking brake caliper setup like the Stoptech rear RS4 BBK too.

Originally Posted by Mr. Corey

Just a heads up you really limit what kind of wheels you can run with massive calipers..... as i learned the hard way

Rs4 owners can get away with decent lips still with their phat fenders but not so much on the b6/7 s4

This is very true too. I had to modify my R8 front brake calipers to clear all my wheels. Basically took a hand grinder with an aluminum grinding wheel to the rounded portion of the top sides of the caliper to make clearance. Also had to remove the front support bar.

Advan TC3 18x9 ET25 wheels with no spacers:

Forgestar F14s 18x9 ET30 wheels with 3 mm spacers:

Enkei RPF1 18x8 ET35 wheels with 10 mm spacers: