B8 brakes / q7 18z calipars

[Kustomimports]

Ok guys, I bought the 18z calipars and pads. Tryed to install these lastnight and realized I need different rotors. Does anyone know which rotors I need to run with these calipars on my b8 s4?

[theswoleguy]

Q7 brakes or Q5? Didn't know q7 brakes bolted on

Sent from my Nexus 6P using Google's ProjectFI

[s4matty]

Ya Q7 bolt on but not sure on the rotor..I run the 18z (Q7) with b7 s4 rotors on my c5 all road

Sent from my SM-G900W8 using Tapatalk

[colby7]

I believe the Q7 has a different bolt pattern.

[redline380]

Something 350mm. I believe ml55 rotors are popular with that caliper. Nit sure how the offset works for you. As noted, q7 is 5x130 so those rotors will not work

[jrivera]

I have a set of rotors if you want measurements

[Kustomimports]

Yes please! I'd like to get this swap done!

[lapsandwich]

Porsche Macan rotors are 350mm and are the correct bolt pattern 5x112. Just wondering about the offset though..

[jrivera]

What measurements?

[LINDW4LL]

I'm surprised you were able to bolt these up. Some before you tried and reported that the caliper body contacted the upright. Thus, I don't believe there are any B8 owners who've actually run this setup yet, and you'll need to make some calculations or test to find a rotor with the proper offset.

As far as rotor options, you could look into the MB GL450 (350x32) and ML55 AMG (345x32) rotors.

[infinkc]

Almost positive they don't bolt up. I think only the 19z work with brackets on the b8.

[Kustomimports]

18z calipars as well as 19z calipars have the same distance in bolt holes. They bolt up.

[LINDW4LL]

18z calipars as well as 19z calipars have the same distance in bolt holes. They bolt up.
Yes, the bolt spacing is correct, but people report the caliper body hits the upright.

Have you actually physically mounted them to the car yet?

[Kustomimports]

I'll do it over the weekend and let you all know... I might of found a oem rotor that will work also.

[jpfour]

I'll do it over the weekend and let you all know... I might of found a oem rotor that will work also.

Hi OP Did you get chance to try the 18z's or any pictures this weekend?

[Kustomimports]

The calipars bolt up with minor timing to the heat sheild. The rotor I'm testing this week. Had to order some

[jpfour]

Cool, I'll try and pick a set up should be a nice conversion for pedal feel and possibly a thicker disc..... Any pictures would be appreciated

[lapsandwich]

Where the pics attttttt?! And what rotors are you using?

[lowjonathan]

The calipars bolt up with minor timing to the heat sheild. The rotor I'm testing this week. Had to order some

nice...

18z bolt up directly...

sub for the rotor fit up...

thanks

[PhilM]

Great work, keep us posted on the rotors!

[lapsandwich]

Hey OP, what rotors did you order ?

[jpfour]

I'm not the OP but some maths and a lot of hunting through specs made me think that GL500 rotors might be close
Screenshot in the link

https://www.dropbox.com/s/6ju1clr9k6eph3u/Screenshot_20160620-214954.png?dl=0

Would love to know if they do fit, if the calipers can be mounted I'm going to order some and try.....

[Li ls4]

Definitely interested in the outcome of this. I've been trying to get myself to buy the q5 calipers but if the q7s work I'd rather get those

[lapsandwich]

I'm a little confused exactly on what I should be basing the rotor offset on. The q7's offset ? Of the s4 ?

[LINDW4LL]

I'm a little confused exactly on what I should be basing the rotor offset on. The q7's offset ? Of the s4 ?
You'd want to measure the difference between where the center of the 18Z calipers sits (when mounted) in comparison to the stock caliper, and then adjust the rotor offset/height accordingly.


---

A little very quick math. For the B7 S4 (which uses the same caliper as the B8), the rotors for 18Z had a rotor offset/height that was 3.7mm more than the stock rotor, for reference.

47.3 was the stock rotor height, ML55s (primary 18Z rotor choice) is 51mm.

For the B8, the stock rotor height is 51.9mm, so maybe something around 55-56mm height?

The GL550 rotor is 54.8, so in the ballpark. That may be the same as the GL500 one that was mentioned above. He's on the right track.

[jpfour]

That's exactly how I drew my conclusion GL500 rotors are a 55mm height

[lapsandwich]

Ohhhhhhh okay. That makes a lot more sense. I'm really
Hoping the OP throws a picture up of the calipers mounted for a little confirmation on the fitment. Z18s are relatively easy to source and the price is a little better then the Q5 four Pistons.

[Kustomimports]

Sorry guys yes I'll post pictures. The calipars bolt up. But the project is on hold atm. Something came up. I'm still on it tho give me a week or 2. A 2010 cl 600 rotor looks like it will do the job. I'll order one and double check it in a week or so.

[jpfour]

Sorry guys yes I'll post pictures. The calipars bolt up. But the project is on hold atm. Something came up. I'm still on it tho give me a week or 2. A 2010 cl 600 rotor looks like it will do the job. I'll order one and double check it in a week or so.

cant wait for pictures........ slightly excited lol

[lapsandwich]

What about having the q7 rotor redrilled for 5x112

[LINDW4LL]

No, Q7 has totally different hubs and the fitment is much different.

[lowjonathan]

any updates on the rotor used?

[SR7D1]

Does anyone make an adapter for the 18Z that you can buy seperatley? For the B8.

[pcardenas]

I have a q7 and always look "hugry" the front calipers with 3 pistons. These are 18Z ?????? will fit directly on our B8 S4 front?????

[SR7D1]

I have a q7 and always look "hugry" the front calipers with 3 pistons. These are 18Z ?????? will fit directly on our B8 S4 front?????

OK, so the 18Z caliper fits, the 19Z needs the adapter? But the 18Z needs a special rotor that the OP is attempting to source? Got it. Sorry for my confusion, trying the source a BBK for less than $2K ahs me all confused! [confused]

Has the OP contaced Adam for rotor options?

[s4matty]

OK, so the 18Z caliper fits, the 19Z needs the adapter? But the 18Z needs a special rotor that the OP is attempting to source? Got it. Sorry for my confusion, trying the source a BBK for less than $2K ahs me all confused! [confused]

Has the OP contaced Adam for rotor options?
I have a set of 18z calipers with b7 s4 rotors if your thinking of doing the swap..

Sent from my SM-G900W8 using Tapatalk

[SR7D1]

I have a set of 18z calipers with b7 s4 rotors if your thinking of doing the swap..

Sent from my SM-G900W8 using Tapatalk

Sent you a PM

[UkuRiSh]

Awesome thread, I'm glad someone start this! I was planning do that too.

[SR7D1]

I have a set of 18z calipers with b7 s4 rotors if your thinking of doing the swap..

Sent from my SM-G900W8 using Tapatalk

Sent you a PM the other day.

[rcaro900ss]

I don't think B7 S4 rotors are going to fit the B8 S4. The center bore on the B8 S4 is 66.6 mm and the B7 is 57.1 mm.

[LINDW4LL]

I don't think B7 S4 rotors are going to fit the B8 S4. The center bore on the B8 S4 is 66.6 mm and the B7 is 57.1 mm.
The rotor center bore is different than the center bore for wheels.

Rotors are 68mm CB for all B5/B6/B7/B8 etc

But they won't fit right for height/offset reasons.


Sent from my iPhone 6 using Tapatalk

[SR7D1]

The rotor center bore is different than the center bore for wheels.

Rotors are 68mm CB for all B5/B6/B7/B8 etc

But they won't fit right for height/offset reasons.


Sent from my iPhone 6 using Tapatalk

So B8 owners can't run this caliper with the adapters? (like inthe JHM kit) Are adapters sold separately ? Do any forum members make small batches?

[s4matty]

So B8 owners can't run this caliper with the adapters? (like inthe JHM kit) Are adapters sold separately ? Do any forum members make small batches?
The caliper bolts up the the uprights..It's the rotor offset that needs to be figured out..I had these on my 02 all road.
I am going to get involved with my partner and figure out what rotor is needed.

Sent from my SM-G900W8 using Tapatalk

[s4matty]

Sent you a PM the other day.
I didn't see it?
Can you resend please

Sent from my SM-G900W8 using Tapatalk

[lowjonathan]

The caliper bolts up the the uprights..It's the rotor offset that needs to be figured out..I had these on my 02 all road.
I am going to get involved with my partner and figure out what rotor is needed.

Sent from my SM-G900W8 using Tapatalk

nice, waiting for your updates on what rotor to use for 18z [:)]

[mdmay]

This will be a great upgrade if the right disc can be sourced.

Sent from my ONE A2003 using Tapatalk

[mdmay]

Will gl450 discuss work as shown here http://forums.vwvortex.com/showthread.php?5667798-How-to-Porsche-Cayenne-VW-Toureg-Audi-Q7-Brembo-brakes.

Sent from my ONE A2003 using Tapatalk

[switchedstance]

Will gl450 discuss work as shown here http://forums.vwvortex.com/showthread.php?5667798-How-to-Porsche-Cayenne-VW-Toureg-Audi-Q7-Brembo-brakes.

Sent from my ONE A2003 using Tapatalk

No. I built my kit for my MK5 alongside Tom (OP) of that thread. When my GTI was totaled, I tried the 17z kit on my b8 a5. Calipers bolt up, but the caliper location puts the rotor very far towards the outside of the car. Caliper mounts are same on 17z and 18z, so rotor offset is also the same, only difference is rotor diameter.

[mdmay]

Did you find a disc to use or just go with a different set up entirely?

Sent from my ONE A2003 using Tapatalk

[LIM1TED]

I just leave this 100% bolt on system right here....

http://www.audizine.com/forum/showthread.php/649128-Audi-S4-Porsche-Macan-BBK-Pure-Sexiness

[SR7D1]

I just leave this 100% bolt on system right here....

http://www.audizine.com/forum/showthread.php/649128-Audi-S4-Porsche-Macan-BBK-Pure-Sexiness
It is a great kit for sure, I followed your other thread when you did it, but it's really just as expensive as the ECS kit or JHM kit. Also the labor is more intensive than just bolting on a set of calipers?

[LINDW4LL]

+1, the cost of that ruins it. The whole attraction of the 18Z setup is that you're getting a fantastic caliper setup for <$500.

[mdmay]

Any joy on the disk hunt

Sent from my ONE A2003 using Tapatalk

[ebarberena]

This kit looks promising. What about asking someone like http://www.girodisc.com/ to make some custom rotors? Maybe a group buy can make them reasonable price wise. They already make them for the OEM setup http://www.girodisc.com/Girodisc-Front-Slotted-2pc-Rotor-Set-for-Audi-B8-S4S5_p_6604.html.

[lowjonathan]

+1 waiting for OP to updated so can pull the trigger on this 18z setup...

[Kustomimports]

Yes you have the center of the b7 s4 rotor bored out to a 66.6.

[lowjonathan]

Yes you have the center of the b7 s4 rotor bored out to a 66.6.

so u are using b7 s4 rotor (bore out 66.6) to bolt up 18z to b8?

correct??

tks


Sent from my iPhone using Tapatalk

[LINDW4LL]

Rotor center bore is 68mm for B5/B6/B7/B8 etc

I don't think the math works out at all on the B7 S4 rotor, but I'm happy to be proven wrong.


so u are using b7 s4 rotor (bore out 66.6) to bolt up 18z to b8?



Yes you have the center of the b7 s4 rotor bored out to a 66.6.

[umairg35]

Hey Guys! I believe I purchased the callipers off the OP. Hoping to install this setup on a A4 B8 (2011)... Since I'm relatively new to this can someone help me with calculation [emoji15] to figure out what rotors would I need?


Sent from my iPad using Tapatalk

[umairg35]

Bump to my Question


Sent from my iPad using Tapatalk

[LINDW4LL]

Some of us have surmised that a rotor with around a ~55-56mm height will work.

The Mercedes GL550 350x32mm is what I'd try.
Sent from my iPhone 6 using Tapatalk

[lowjonathan]

pls report back what rotor is possible to use
tks


Sent from my iPhone using Tapatalk

[ANDYTQ]

I have 18z calipers on my b7,but have just bought a s4 b8,before I sell the b7 with the 6 pots on it ,I would like to know if they will fit the b8.Any more news guys.

[umairg35]

I have 18z calipers on my b7,but have just bought a s4 b8,before I sell the b7 with the 6 pots on it ,I would like to know if they will fit the b8.Any more news guys.

I didn't get a chance to take the car to my mechanic. Unfortunately got very busy with work. Keep me posted if you hear anything from your end. I purchased these from a B8 S4 owner who seemed very knowledgeable and was planning to use these on his B8 S4 with B7 S4 rotors till he landed on a set of Stoptech kit. He did mention the caliper was a direct fit.


Sent from my iPhone using Tapatalk

[umairg35]

Another very knowledgeable member shared this link with me. I'm yet to go through this read.

http://forums.quattroworld.com/allroad/msgs/68518.phtml


Sent from my iPhone using Tapatalk

[SR7D1]

That write up from quattroworld is really good! But I didn't find anything that stated what rotor to use for a B8? (many rotors are listed, but they are for the allroad) Did I miss something?

[umairg35]

That write up from quattroworld is really good! But I didn't find anything that stated what rotor to use for a B8? (many rotors are listed, but they are for the allroad) Did I miss something?

I'm in the same boat. In another forum a member mentioned to check the B8 forum coz a lot of them are using this setup. Haven't gotten around to it.


Sent from my iPhone using Tapatalk

[LINDW4LL]

I'm in the same boat. In another forum a member mentioned to check the B8 forum coz a lot of them are using this setup. Haven't gotten around to it.


Sent from my iPhone using Tapatalk
There must have been some confusion from the other member who mentioned that. No one has confirmed a rotor that will work for 18Z/B8, yet. I don't believe anyone on the forum is running that setup at this moment. There are a few people who posted about ordering rotors to try, but again none have come back with a confirmation or rotor that will work, yet.

Many B8'rs are running the 345mm Q5 4-piston setup. Maybe he was confused and thinking of that.


Sent from my iPhone 6 using Tapatalk

[JayS4+]

Kustomimports
Did you managed to make the 18z calipers work properly.? If so how did u do it


Sent from my iPhone using Audizine (https://siteowners.tapatalk.com/byo/displayAndDownloadByoApp?rid=87676)

[umairg35]

Managed to sell them instead [emoji12]


Sent from my iPhone using Tapatalk

[BIG_ROOSTER]

Is this really that hard I test fit a set of 356mm x 22mm rotors last week on the rear of my B8. Rotor mounted up fine the only problem I ran into is the 356 mm caliper and brackets I bought off of eBay were actually 330 mm rear calipers off of an Audi A8. Other than that took me a total of 30 mins to pull brakes off install new rotor I ordered from o'reillys cuss and yell and stupid ebayers and replace my brakes. I put an offer in on a set of 18z's but if someone loans me one I'd do it next time I was home. As long as a local store could source that Mercedes rotor.

[BIG_ROOSTER]

Got an 18z caliper on the way. I found a forum where someone installed these calipers on a golf R. He used a Mercedes GL 450 rotor. I looked it up the b8 uses the same rotor as the golf R. So that's what I will start off with.

http://forums.vwvortex.com/showthread.php?5830375-Brembo-18Z-6-piston-brake-upgrade.-DIY-BBK-write-up.-Big-brakes-for-under-a-grand#/topics/5830375?_k=hjpthd

[JayS4+]

Got an 18z caliper on the way. I found a forum where someone installed these calipers on a golf R. He used a Mercedes GL 450 rotor. I looked it up the b8 uses the same rotor as the golf R. So that's what I will start off with.

http://forums.vwvortex.com/showthread.php?5830375-Brembo-18Z-6-piston-brake-upgrade.-DIY-BBK-write-up.-Big-brakes-for-under-a-grand#/topics/5830375?_k=hjpthd

Nice, let us know how that works out [emoji1360]


Sent from my iPhone using Audizine (https://siteowners.tapatalk.com/byo/displayAndDownloadByoApp?rid=87676)

[JS81]

This kit looks promising. What about asking someone like http://www.girodisc.com/ to make some custom rotors? Maybe a group buy can make them reasonable price wise. They already make them for the OEM setup http://www.girodisc.com/Girodisc-Front-Slotted-2pc-Rotor-Set-for-Audi-B8-S4S5_p_6604.html.

I spoke with the girodisc sales manager (audi b5 guy), and he highly recommended going with the Q5 brembos. Based on several factors including ease of install, cost, and the fact that this is the most common brembo design, giving you almost limit less, and cheap, choices in brake pads. Buying pads for a more exotic setup like an R8/RS5 can run around $1000

[BIG_ROOSTER]

Yes but the Q5's are 4 pot not 6

[JS81]

Yes but the Q5's are 4 pot not 6

True, but pads, rotors, size of the pots..etc; all matter. If money was no object, everyone would be running Brembo GTs or other BBK. Was just throwing the Q5 brembos out there as a very affordable and good upgrade. I think matched with the right pad, they are more then sufficient.

[administerturbo]

True, but pads, rotors, size of the pots..etc; all matter. If money was no object, everyone would be running Brembo GTs or other BBK. Was just throwing the Q5 brembos out there as a very affordable and good upgrade. I think matched with the right pad, they are more then sufficient.

Agree. They are a nice option. They bolt right on and even fit with the existing heat shield. They are lighter than the stock brakes. They are alloy which should heat sink better than the stock brakes. And they have plenty of pad options if you look. I'm thinking I'll have them powder coated and do the Macan brake duct scoop mod and call it a day.

[Bruno_s4]

Agree. They are a nice option. They bolt right on and even fit with the existing heat shield. They are lighter than the stock brakes. They are alloy which should heat sink better than the stock brakes. And they have plenty of pad options if you look. I'm thinking I'll have them powder boated and do the Macan brake duct scoop mod and call it a day.

That's exactly what I am in the process of doing for next season.
Macan heat shield, Macan scoops, Q5 Calipers, Titanium Brake Shims, Hawk DTC60 pads, SS Lines and Castrol SRF Fluid.
Hopefully that will be enough to not boil my fluid again!

Before painting
http://i105.photobucket.com/albums/m231/BrunoS4/IMG_20160915_1420062.jpg

After painting
http://i105.photobucket.com/albums/m231/BrunoS4/IMG_20160926_1136206.jpg

[JS81]

Nice, what paint did you use?

Sent from my SM-G930P using Tapatalk

[rlfletch]

Yes, what paint and source/part number for Macan heat shield?

[Bruno_s4]

Nice, what paint did you use?

Sent from my SM-G930P using Tapatalk

Had a local place paint it for me.
He just used some high temp primer and high temp spray paint.
Then added the decals.


Yes, what paint and source/part number for Macan heat shield?

95B615311B
95B615312B

Ordered from Porsche

[rlfletch]

Thank you!

[BIG_ROOSTER]

Mercedes gl 550 rotor will not work will post pictures later the offset needs to come away from the knuckle not sure how much. If you go inwards I believe it will interfere with the knuckle.

[JayS4+]

Damn that sucks


Sent from my iPhone using Audizine (https://siteowners.tapatalk.com/byo/displayAndDownloadByoApp?rid=87676)

[BIG_ROOSTER]

These are the pictures I took of the the caliper position with a loaded caliper. So now someone needs to find a rotor with a different et or whatever they call the offset.

http://uploads.tapatalk-cdn.com/20160930/d435bec60c019db8a302d0aab753c15e.jpg

http://uploads.tapatalk-cdn.com/20160930/d0e8c61994b41105419d3d4cd0cd9179.jpg

My a4 stock size rotor
http://uploads.tapatalk-cdn.com/20160930/5db8e3242bc6f62f726f7679b5cc40fd.jpg

The stock and Mercedes rotor had the same hat height. Not sure how much it needs to step out to be viable.
http://uploads.tapatalk-cdn.com/20160930/b7d8d9c681cc47392860596b0be8878a.jpg

[jpfour]

Which disc exactly was the Mercedes one? And did it touch the knuckle when mounted?

have a spare knuckle and hub to try stuff on.

Thanks James

[BIG_ROOSTER]

Nope didn't touch the knuckle. Is the knuckle and spindle the same on the A5 cause there are some for $100 on eBay I'll order that and it'll be easier than taking my wheel off and all the brake components every time.

Oh the first picture was Mercedes the brand new one on the left. It's really not that much bigger than my a4.

http://uploads.tapatalk-cdn.com/20161002/4e7a180dd5c7ca235674cd7324ba2cc9.jpg

[BIG_ROOSTER]

Never mind $94 with shipping but it might not get there before Saturday. Y'all are really cutting into my video game time with all of this

[jpfour]

Yeah it should be a big help having a knuckle! Was the disc the gl550 one?

[BIG_ROOSTER]

Yep the gl550 brakes are a direct match for our existing calipers as far as offsets are concerned but now we need a rotor with about an inch shorter top hat

[BIG_ROOSTER]

Ordered spacers to push the rotor out. Anyone found a rotor with a shorter hat height yet? What's the hat height on an Audi A6 356mm rotor? I do have a rear 356mm x 22 mm rotor brand new that I was test fitting for my rear it'll definitely clear the caliper.

[JayS4+]

No haven't been able to find the right rotors for the set up


Sent from my iPhone using Audizine (https://siteowners.tapatalk.com/byo/displayAndDownloadByoApp?rid=87676)

[abamfo]

EDIT

[abamfo]

Has anyone managed to find a setup with this caliper which works on a B8??

Does anyone know if the rotor made for the B5 RS4/S4 would fit the B8 centre bore?
https://jhmotorsports.com/shop/catalog/front-rotorspair-jhm-350mm-for-cayenne-caliper-on-b5-s4-p-442.html

Saw these the other day but I suspect they also have the centre bore issue and aren't available until February which doesn't help
https://www.ecstuning.com/Audi-B5_S4--2.7T/Braking/Performance/ES3082393/

[BIG_ROOSTER]

The ones they use on the b5 the hat is to tall I am searching for a rotor with a shorter hat. From the pictures the 356 A6 might work just need to find the time to procur one and fit it

[abamfo]

The ones they use on the b5 the hat is to tall I am searching for a rotor with a shorter hat. From the pictures the 356 A6 might work just need to find the time to procur one and fit it

This is really interesting, I wonder if ECS tuning might be able to check the rotor hat size between the 345mm and 356mm rotors for us... was looking on Carid and they do give some dimensions for the Stoptech OEM replacement disc for the A6/A7, looks like the hat is around 18mm from my calculation https://www.carid.com/stoptech/drilled-and-slotted-sport-front-driver-side-brake-rotor-mpn-127-33134l.html

Do you see any issues with the 356mm diameter being an issue for the 18z caliper or not? If this does fit, it's a great cheaper brake upgrade for the B8, especially with the calipers on sale on ECS right now!

[JayS4+]

Looks like Rotor Lab can make custom brake rotors, if we could with the exact size needed (hat height, diameter, etc) maybe they can make some for us


Sent from my iPhone using Audizine (https://siteowners.tapatalk.com/byo/displayAndDownloadByoApp?rid=87676)

[Militant-Grunt]

I suggest contacting either JHM or Racing brake, they both make conversion rotors for B5-B6/7. It would be a matter of just releasing new hats for rotors they already have.

[BIG_ROOSTER]

Well somehow I missed this I promise to open all my boxes this weekend and pull this stuff back out. I got side tracked buying an Audi C5 avant and working on it. Needless to say that was money thrown out of the window and I tossed the whole car. I have spacers to mock up the 350 rotor and the 356 so I can get a better idea of what size hat is needed. Yes we could do custom rotors but then you're knocking your self out of the cheap brake upgrade department. Now if there was a place for a custom 2 piece for weight reduction that would be golden because the 350 x 34 is definitely a huge chunk of steel. If I don't post anything by Monday shoot me a pm so I won't miss this again.

[BIG_ROOSTER]

Well I have a beautiful 356 mm brake from A6/A7/A8 as far as roundness goes it fits beautifully. As far as hat height it's stupid. I was able to get a shim on it to measure the difference in the hat height. The problem I foresee is the hat height needs to be at least flush with the face of the rotor and then shimmed behind it or grind away half of the mount on both of them.

https://uploads.tapatalk-cdn.com/20170120/5a0f57e179510648142b341737475a4b.jpg

https://uploads.tapatalk-cdn.com/20170120/b8d27d9a6fcc04ba18c5b3a89bb53e89.jpg

https://uploads.tapatalk-cdn.com/20170120/58d16fc8829d1c084e80b6abb963c1a3.jpg

https://uploads.tapatalk-cdn.com/20170120/e325a639514a3e330091af2a43f96801.jpg
I used this shim to raise the rotor level and figure out the difference

https://uploads.tapatalk-cdn.com/20170120/f676919e339822a5ee45bc6b38f3bab2.jpg

Starting to understand why the 19z version is so expensive

[BIG_ROOSTER]

https://www.ebay.com/itm/231503234311

Does anyone know what caliper this one is? I am going to assume it's the 19z

[LINDW4LL]

Does anyone know what caliper this one is? I am going to assume it's the 19z
That is a Brembo GT caliper. Different than the 19Z.

[BIG_ROOSTER]

I had an epiphany 18z is out the window now on to 17z with the pads from the 18z. I need 15mm to come out of the mounts so some off the spindle and some off the caliper. Or 380 mm rotors, is this what we really want? Technically 386mm since I'm measuring off the 356mmx34mm rotor from the a6-8.


Sent from my iPad using Tapatalk

[S-Fore]

FYI, SQ5 uses an OEM 380mm rotor (floating too) and the hat offset is approx 12-15mm. And the SQ5 & S4 use the same knuckle, hub etc...

I was trying to get JHM to sell me their bracket & caliper from of their 19z / 382mm kit to see if it bolted up to my OEM rotors. But they're weren't having it. I wonder...



I had an epiphany 18z is out the window now on to 17z with the pads from the 18z. I need 15mm to come out of the mounts so some off the spindle and some off the caliper. Or 380 mm rotors, is this what we really want? Technically 386mm since I'm measuring off the 356mmx34mm rotor from the a6-8.


Sent from my iPad using Tapatalk

[LINDW4LL]

I had an epiphany 18z is out the window now on to 17z with the pads from the 18z. I need 15mm to come out of the mounts so some off the spindle and some off the caliper. Or 380 mm rotors, is this what we really want? Technically 386mm since I'm measuring off the 356mmx34mm rotor from the a6-8.
How are you planning to fit larger than a 330mm disc under the 17Z calipers?



Sent from my iPhone using Tapatalk

[BIG_ROOSTER]

Ok I've got a 380 rotor but the son of a bitch is 36mm thick so the pads have clearance but I'm going to need to trim the rods the pads ride on but it's not that much trimming so I'm going to go after it with a cut off wheel.

The 15mm trimming I was discussing is not in front or behind the mount I mean in between the mount. Gonna use a piece of flat steel with holes to push the caliper away from the knuckle. The 380 mm rotor I assume is going to need a 19 inch wheel though. But I don't have an 18 to test with just 17 and 19. If you wanted to jump up to the Audi s6 brake rotor at 400 mm then all you'd have to do is some spacers and flat steel for the 17z caliper.

Yes the 17z on a Porsche or Volkswagen sits on a 320 mm rotor but that is due to the mounting position. That's why the 18z utilizes a 350 mm rotor. The mount on the mono block caliper pushes it further away from the center.

[Black_Pearl_B6]

Bumping this thread, anyone know the offset spec on the b6/7 s4 rotors??? I know the centerbores are different but I am a machinist and could easily open up the center bores and keep it concentric to +or- .0005 not that it needs to be that precise I'm just bragging a little

[BIG_ROOSTER]

Bumping this thread, anyone know the offset spec on the b6/7 s4 rotors??? I know the centerbores are different but I am a machinist and could easily open up the center bores and keep it concentric to +or- .0005 not that it needs to be that precise I'm just bragging a little

The mounting points are the issue not the rotors. The b8 designers have placed the caliper mounts in the exact spot the 18z and 17z need to be. To mount on the back side of the mount the rotor will be against the spindle. If you mount on the face of the caliper mounts the face of the rotor will past the wheel mounting face.

I still haven't trimmed the 17z rotor guide pins to accept the 380 rotor. The 380 gets you far enough away from center to use a piece of flat steel.

The easiest solution is removing material from the caliper mounts. Which for liability reasons I would never recommend anyone to do.

[1gcrazy]

Any update on this?

[hgunther]

Bump. Any update?

[MightyMouse75]

Bump. Any update?

This looks like a pretty dead post.
I have a set of bm5, 17z and 18z calipers.

What options have been tried and failed?
I can run to the local junkyard and buy damn near every type of rotor needed for cheap. They practically give rotors away at scrap value +20%