What do i need to put this TTRS calipers

**dalmation53** · 02-18-2021 06:49 PM

On the B8 A4 or S4 any custom brackets? Or calipers bolts right up? 174-montage-bremssattel-adapter-ttrs-320x20-a4-b7-bremsscheibe-bremsanalge-umbau-1_2607_478x440.jpg

Sent from my LM-Q730 using Tapatalk

**KaiPLN** · 02-18-2021 08:39 PM

You will need new brackets to fit those calipers on 345mm rotors or get 365mm rs5 rotors if you want to use the stock ttrs caliper + bracket setup.

**dalmation53** · 02-18-2021 10:03 PM

Where can i find the brackets bro?

Sent from my LM-Q730 using Tapatalk

**KaiPLN** · 02-18-2021 10:26 PM

The only brackets that I know of that exist for use with 345mm rotors and ttrs calipers would be here https://www.vagbremtechnic.com/front...-discs-ak0010/
Otherwise you would have to make custom ones I think. I was planning on getting these exact brackets for my ttrs calipers since I didn't want to machine the 370mm ttrs rotors to fit my b8.5 (ttrs has smaller hubs than a b8 audi). In the end I ended up using rs5 rotors with ttrs calipers and the only thing that you need to do is fit a 1mm spacer where the caliper mounts to the upright.

**KaiPLN** · 02-18-2021 11:16 PM

Looks like there is also an option to mount these calipers to 320mm rotors with this bracket https://www.bks-tuning.com/audi-a4-s...-brackets.html

**QuattroJ** · 02-19-2021 09:36 AM

I have a set of DB9 calipers (Same as the TTRS just cheaper) on the way. I'm looking to match them up to Porsche 360x36 Macan rotors. I need to measure the width first. I've spoke to VBT about increasing the carrier height to accommodate them.

**KaiPLN** · 02-19-2021 01:34 PM

There is no way a db9/ttrs caliper will fit over a 36mm thick rotor. Stock ttrs and db9 rotors are 32mm thick. My setup is as close as it gets with 34mm rs5 rotors and that's pushing it.

There is maybe 1mm of clearance on each side of the caliper on the inside. Too close to my liking but so far I had them on for the past month.

There was a recall on these 4 piston calipers a while back from audi that's how I ended up with a cheap set of these calipers and ttrs rotors to begin with. The only thing audi did was add weights on the back of the new calipers during the recall.

Newer ttrs/rs3 have 8 piston calipers instead of these.

Easiest way would be to get q5/macan 4 piston calipers with stock 345mm rotors just like I have on my b6.

**QuattroJ** · 02-19-2021 02:46 PM

That's good information to know. I hadn't been able to find any pad to pad measurements for the caliper, so I figured I'd try it. Did you fab your own carrier? I'd rather not go the Q5 route.

**KaiPLN** · 02-19-2021 03:26 PM

I'm using the stock ttrs carrier that came with the caliper. That's why I went with the rs5 rotors since its a direct bolt on and you can get them at rockauto for about $225 each for the non waved ones.

Way easier than machining a ttrs rotor to fit the b8 hub and the spacers you need to put between the hub and rotor for the ttrs rotor offset to match the ttrs caliper.

I did notice that compared to the q5 calipers they have different sized pistons even for a 4 piston so I had to swap the caliper over to the other side of the car.

To space out the caliper in the center of the rotor and not rub I got 1mm washers where the caliper mounts to the upright.

Cant use stock brake lines with ttrs/db9 calipers so bought lines for a rs5.

Many cars use the brembo f40 caliper variants(just like your db9 caliper). For example Subaru pads fit if you want pad choice but they dont come with wear sensors.

**QuattroJ** · 02-19-2021 03:47 PM

This is all the info I had trouble finding. Just to confirm, the TTRS caliper carrier, with 1mm spacers, will bolt on to the S4 knuckle and allow you to run RS5 rotors? I had read about the TTRS rotor and its one off dimensions. The TTRS calipers use 40/44 sized pistons vs the Q5 42/42. Indeed many cars do use this caliper. The DB9 and TTRS are the only models I found with add on carriers instead of cast in ones. What are your thoughts on the feel of the TTRS caliper on the S4?

**b8s4king** · 02-19-2021 05:12 PM

Originally Posted by KaiPLN

I'm using the stock ttrs carrier that came with the caliper. That's why I went with the rs5 rotors since its a direct bolt on and you can get them at rockauto for about $225 each for the non waved ones.

Way easier than machining a ttrs rotor to fit the b8 hub and the spacers you need to put between the hub and rotor for the ttrs rotor offset to match the ttrs caliper.

I did notice that compared to the q5 calipers they have different sized pistons even for a 4 piston so I had to swap the caliper over to the other side of the car.

To space out the caliper in the center of the rotor and not rub I got 1mm washers where the caliper mounts to the upright.

Cant use stock brake lines with ttrs/db9 calipers so bought lines for a rs5.

Many cars use the brembo f40 caliper variants(just like your db9 caliper). For example Subaru pads fit if you want pad choice but they dont come with wear sensors.

Wow so your telling me ttrs caliper are direct bolt on just need
Rs5 rotor and a 1mm spacer?!

**QuattroJ** · 02-19-2021 05:31 PM

That is what it seems like.

**b8s4king** · 02-19-2021 05:46 PM

Originally Posted by QuattroJ

That is what it seems like.

Seems strange
TT’s use
Leading brake instead of trailing brake
Bleeder must be down side instead of upside

**QuattroJ** · 02-19-2021 05:51 PM

These Brembo series calipers can be reversed. You have to swap the bleeders and crossovers. The downside for me is that I'm using DB9/ V8 Vantage calipers, so they didn't come with TTRS carriers.

**KaiPLN** · 02-19-2021 08:17 PM

Originally Posted by QuattroJ

This is all the info I had trouble finding. Just to confirm, the TTRS caliper carrier, with 1mm spacers, will bolt on to the S4 knuckle and allow you to run RS5 rotors? I had read about the TTRS rotor and its one off dimensions. The TTRS calipers use 40/44 sized pistons vs the Q5 42/42. Indeed many cars do use this caliper. The DB9 and TTRS are the only models I found with add on carriers instead of cast in ones. What are your thoughts on the feel of the TTRS caliper on the S4?

Yes got mine from Mcmaster carr and 1mm to be exact. There is very little wiggle room for adjustment if you loosen up the carrier bolts on top of the carrier but that is all that you can do.

Im on stock ttrs brembo brake pads for now and the brakes are way more touchy in traffic.

**KaiPLN** · 02-19-2021 08:21 PM

Originally Posted by QuattroJ

These Brembo series calipers can be reversed. You have to swap the bleeders and crossovers. The downside for me is that I'm using DB9/ V8 Vantage calipers, so they didn't come with TTRS carriers.

Originally Posted by b8s4king

Seems strange
TT’s use
Leading brake instead of trailing brake
Bleeder must be down side instead of upside

Yes you swap everything over to the other side of the caliper just like QuattroJ said. One other thing is to use your stock b8 caliper bolts because stock ttrs are a little too short for the b8 knuckle.

Just to be clear u can mount these on b5/b6/b7 cars as well...since q5 brembos mount to all these platforms also.

**QuattroJ** · 02-19-2021 08:24 PM

Thanks for the info. I need to figure out my carrier situation.

**b8s4king** · 02-20-2021 03:31 AM

Originally Posted by KaiPLN

Yes you swap everything over to the other side of the caliper just like QuattroJ said. One other thing is to use your stock b8 caliper bolts because stock ttrs are a little too short for the b8 knuckle.

Just to be clear u can mount these on b5/b6/b7 cars as well...since q5 brembos mount to all these platforms also.

Nicee now i need to find ttrs caliper bracket with db9 caliper or a complete set of ttrs calipers
You have pictures of your setup?

**QuattroJ** · 02-20-2021 08:11 AM

The DB9/ V8 Vantage calipers are far cheaper than the TTRS set. In for pictures also.

**KaiPLN** · 02-20-2021 09:35 AM

Girlfriend took my car to work but I did find one picture.

Drivers side with 19inch wheels

**QuattroJ** · 02-20-2021 09:36 AM

I read about the Audi recall. Aston didn't seem to have this problem. I've read several posts on here that people had success with swapping pads. I wonder if that was the difference.

**QuattroJ** · 02-20-2021 09:37 AM

Thanks. That looks good.

**KaiPLN** · 02-20-2021 09:43 AM

Originally Posted by QuattroJ

I read about the Audi recall. Aston didn't seem to have this problem. I've read several posts on here that people had success with swapping pads. I wonder if that was the difference.

Some people put a chamfer on their brake pads as well to fix the vibration problems. But the major change was audi putting the weights on the back of the caliper just like newer Audi calipers have.

**QuattroJ** · 02-20-2021 09:46 AM

Have you had any of the noise or vibration problems?

**KaiPLN** · 02-20-2021 10:03 AM

Can't really hear anything over my awe track exhaust anyway lol

Plus our beautiful NY roads bent my wheel already so I have vibrations all the time.

**QuattroJ** · 02-20-2021 10:06 AM

Damn. Lol.

**QuattroJ** · 02-20-2021 12:56 PM

Have you used this setup on the track? Or through some twisties? How has it affected your confidence in the brakes? Thoughts compared to the stock set up?

**KaiPLN** · 02-20-2021 02:14 PM

Well larger rotors and more clamping force over stock brakes is more than enough for the street and I don't track my car so I don't need super expensive brakes.

**b8s4king** · 02-21-2021 06:33 AM

Originally Posted by KaiPLN

Girlfriend took my car to work but I did find one picture.

Drivers side with 19inch wheels

Hum does not seems like it would fit under my 18 inchs track wheels :/

**KaiPLN** · 02-21-2021 11:35 AM

Here are some 18 inch over ttrs brakes from the b5 s4 forum:

**QuattroJ** · 03-08-2021 01:58 PM

KaiPLN what brake pads are you using with your calipers?

**KaiPLN** · 03-08-2021 02:41 PM

Stock ttrs brembo pads that came with my calipers.

**QuattroJ** · 03-08-2021 02:45 PM

Thanks. They must be thinner than Aston pads. I'm getting a 32.5mm pad to pad measurement on these calipers (Aston uses 32mm thick rotors). I need to find the thickness of the TTRS pads.

**QuattroJ** · 03-08-2021 02:50 PM

I'm getting a 34.5mm measurement on the rotor guide blocks.

**KaiPLN** · 03-08-2021 03:01 PM

I barely fit my pads in because of the thicker rs5 rotor. I didn't measure the pad thickness unfortunately.

**QuattroJ** · 03-08-2021 03:04 PM

Makes sense. I'm gonna have a machinist look at shaving down the guide blocks. I think it should work for 36mm. Pads are problem now.

**KaiPLN** · 03-08-2021 05:37 PM

Well if you are still trying to fit these over your 36mm porsche rotors then you definitely need to grind the inside of the caliper.

New pads will definitely need to be cut down to even fit with your wide rotor. But then again that is almost 2mm to take off each pad to even make them fit.

Just like I previously said that my 34mm rs5 rotors fit as close as possible without modification to the actual caliper.

**QuattroJ** · 03-08-2021 05:47 PM

With some of the pad measurements I've been gathering, I think its doable. The blocks are the issue. Its solid metal and I can't see a safety issue taking 1mm off each block. The pistons have enough travel. I won't do more than 1mm though. I need to find pads. This route is cheaper than having brackets fabbed.