8Y RS3 Brake Pads and Rotors Thread

[xeonoex]

Please let me know if new options are available and I will update.

FCP Euro part numbers:

Steel front rotor: 4M0 615 301 BJ
Steel front pads: 83A 698 151 B
Rear rotors: 5Q0 615 601 E
Rear pads: 8Y0 698 451 B

Brake pad options:

The front pads are shared with the B9 S5 and a few other Audi models. The rear pads are all new and have slight changes from the 8V. Pads that say they fit the 8V and 8Y will likely not fit the 8Y. The 8Y has a cutout on the ears of the pad with the spring.

From Endless:
Steel front pad shape
8V Steel rear pad shape

Front and rear
Carbotech sold by 529 Innovations
EBC sold by EBC Brakes Direct
Girodisc search

Front:
iSWEEP sold by Neuspeed
Hawk HB865Z.620
Porterfield AP1894
Ferodo DS2500

Rear:
Porterfield AP2433

Rotor options:

Front and rear:
Girodisc search

Front
034 Front rotors
FCP Euro part search

Rear
034 upgrade kit
FCPEuro part search

[Amirh87]

529 innovations:

https://www.529innovations.com/529br...-rs3-brakepads


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[Crowlski]

Anyone autocrossing with the steel brakes? If so how are they holding up?

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[elijahallen]

Make this sticky, thanks for starting this.

[okswerve16]

Anyone have the part #'s for those that have carbon ceramics front brakes? Are the 8y and 8v ceramic calipers/rotors/pads the same? As it seems like for steel fronts they are different than 8v vs 8y.

[xeonoex]

529 innovations:

https://www.529innovations.com/529br...-rs3-brakepads

Thanks! Added.

Anyone autocrossing with the steel brakes? If so how are they holding up?

I haven't done autocross, but I did take mine to the tracks and the brakes held up well through 8 ~20-25 minute sessions. I posted some pics showing the wear too.

Anyone have the part #'s for those that have carbon ceramics front brakes? Are the 8y and 8v ceramic calipers/rotors/pads the same? As it seems like for steel fronts they are different than 8v vs 8y.

FCP Euro can probably send you the part numbers if you give them your VIN. My guess is everything on the rear is the same, but the front is completely different.

[xeonoex]

Added EBC options. I went with Carbotech XP10s and will be installing them soon and testing them out.

[SVTunit]

Hawk HB865Z.620
https://www.hawkperformance.com/pads/hb865z-620

[Amirh87]

Hawk HB865Z.620
https://www.hawkperformance.com/pads/hb865z-620

Do you have a link for rears?


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[SVTunit]

Do you have a link for rears?

Sorry, no.

[xeonoex]

Hawk HB865Z.620
https://www.hawkperformance.com/pads/hb865z-620

Thanks, added.

Also, I tried my Carbotech XP10s out at the track yesterday. They held up really well. Pretty much no noticeable wear after 6 track sessions.
They didn't even squeak when I put them on at first. They do squeak after I did the track day though.

[GTItoS4]

8Y stock pads are easily the dustiest pads I've ever owned. And I thought my S4 pads were terribly dusty. This thing needs a weekly wash and wheel detail.

Interested in a cleaner street pad option.

[xeonoex]

Carbotech's track pads are way less dusty than any OEM or Hawk pad I have used. I'm on the track compound, so I would hope the street compound is even better in terms of dust. They might be worth giving a shot.

[S3DUDE]

This is a shot in the dark but does anyone knows if the 8V rotors would fit the 8Y? I know the 8Y is 2mm bigger in diameter and the barkes pads and calipers are different. If I can not make them fit I would have to sell my 2 pieces Neuspeed rotors and Carbotech pads which are in great condition.

[Rod Paine]

S3Dude
You wrote "Ran stock RS3 11.703 with traps of 117-118.94 mph at 3100 ft elevation

Where was this in Tucson? I am a long ago Tucson boy (1949-1958) and started fast
back roads drives around Sabino Canyon. But probably very different today.
I am driving a 2019 RS 3 in northern Virginia 3 days a week as weather permits
and between 10am and 2pm when very little traffice is on these roads.

Has amounted to 30,751 miles out of a total of 42,862 miles thus far, on
245/40/18 as the stock 19-inch 235/35/19 setup lasted only 3 days due to
the very poor road surface problems that killed two tires!
-Rod

[mrdouble99]

someone retrofit to the steel brake on a RS3 ?

Is the caliper the same between the 2 style rotor ?

[MESOGLEA]

I have a set of front/rear Girodisc with their Magic Pads.
they look and perform great.

https://girodisc.com/finder/?pfresul...All&f_axle=All

[xeonoex]

Updated to add Girodisc options, as well as some more parts from FCP Euro.

[WoolEnthusiast]

I just had my front pads replaced due to squealing. Went with GiroDisc MP-1894, which is the part number for the B9 RS5 front brake pads. GiroDisc's part finder does direct you to the correct SKU (and not the 8V RS3 SKU, which won't fit), but just in case it seemed odd to anyone else, I can confirm they fit.

[RSMike]

If you guys want more options, ENDLESS EIP293 Front and EIP251 rear.
You'll be able to order whatever compounds you want from your local dealer.
SSM-Plus (MP) for street only use, this is zero dust and excellent disc/pad wear.
MX72 for hard street driving or light track.
Then ME22/ME20/N35S etc for track use.

Front Shape - https://www.endless-sport.co.jp/prod...EIP/EIP293.pdf
Rear Shape - https://www.endless-sport.co.jp/prod...EIP/EIP251.pdf

[xeonoex]

Thanks, updated. It does seem like the fronts use the same pads as the B9 RS5, and same rear pads as the prior RS3. But I would still wait on confirmation from the seller.

[elijahallen]

I used the isweep 3600 pads for a track weekend. They held up great and had good bite after one lap that stayed consistent for a 30 minute run session.

[stummiller]

529 innovations:

https://www.529innovations.com/529br...-rs3-brakepads


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Edit: This is for the rear pads only. Front pads are available from Carbotech according to Pete at 529Innovations.com
Unfortunately, for the 8Y, Carbotech requires customer to send in old brakes as re-core since they can't get pad backings yet.
Edit: Carbotech rears for 8Y now available without customer supplying original pad backing

[stummiller]

I used the isweep 3600 pads for a track weekend. They held up great and had good bite after one lap that stayed consistent for a 30 minute run session.

Was this for 8Y or 8V and were you using stock front rotors?

[stummiller]

Thanks for this thread. Very helpful. Just to add my own experience with the '23 8Y with steel brakes.

I drive mostly on the street but doing 4-6 HPDE events a year, I'd like better brake performance for the track. I have no issues with the stock brakes on the street except maybe the amount of dust the stock pads throw off. On the track however, the OEM pads generate a ton of dust which after a few sessions packs up in the cross drilled holes in the rotors until they are basically blocked with dust. Then inevitably the dust gets pulled out of the holes and transferred to the rotors with noticeable build up in the areas of the rotor surface between the holes. This is causing significant brake vibration and reduced braking performance. Once they clean up after a few days of street driving or after performing a bed-in procedure, the pulsing is gone but makes the second half of the HPDE at the track not much fun. Not sure if this is a common thing for the 8Y but talking to another 8V RS3 owner at the track, he had similar issue with his 8V brakes and switched to slotted aftermarket rotors and aggressive pads which seemed to solve the issue for him.

What I am wondering is if a more aggressive pad (that creates less dust) on stock rotors might help of if I just bite the bullet and go with a set of Girodisc front rotors and a better pad? Any experience with Girodisc magic pads?

[xeonoex]

I did one event on the stock pads and they worked well. No fading, but there wear was significant. Then I went to Carbotech XP10s on the front. Much better wear, but more dust as well. My track wheels are red so it's pretty obvious.

My OEM rotors filled up with dust immediately. I switched to Girodiscs front and rear. Rear is completely unnecessary honestly, but they look good. Oddly I still have some noise and vibration occasionally between 60-40 mph while braking. Took it to the dealership and some people felt it and others didn't. The foreman said he never felt it so they didn't really do anything about it. Waste of time. My wheel came loose on track because of it. Almost fell off and totaled my car. I was at the dealership the day before too to replace bolts and torque everything down. The vibration is still there, but it comes and goes oddly enough. I think it has to do with temp.

Girodisc said their pads are not for track use, so I would skip those unless you're switching them out. Honestly, the stock pads might be the best bet if you're not having any fade issues. Mostly because you can replace them through FCP Euro.

I would recommend replacing the front rotors for two reasons - the drilled holes, and the fact that the vanes are reversed on one wheel because Audi use the same rotor left and right.

[stummiller]

*snip*
Girodisc said their pads are not for track use, so I would skip those unless you're switching them out. Honestly, the stock pads might be the best bet if you're not having any fade issues. Mostly because you can replace them through FCP Euro.

I would recommend replacing the front rotors for two reasons - the drilled holes, and the fact that the vanes are reversed on one wheel because Audi use the same rotor left and right.

Thanks. Your experience more or less confirms mine and agree that going to the Girodiscs just on the front is going to drastically improve things. My main issue with stock pads is price as they are $800 a set. I don't think FCP carries them yet either (unless some can confirm the fronts are the same as the B9 S4 pads). iSweep at Neuspeed are about $300 front and $200 rear for the IS3000 pads which sound like they're a good compromise street and track. Issue with iSweep pads is no wear warning harness and $20 per wheel for the brake pad wear sensor by pass.

[elijahallen]

Was this for 8Y or 8V and were you using stock front rotors?

It was on my 8y and yes stock front rotors that also held up very well.

[xeonoex]

Thanks. Your experience more or less confirms mine and agree that going to the Girodiscs just on the front is going to drastically improve things. My main issue with stock pads is price as they are $800 a set. I don't think FCP carries them yet either (unless some can confirm the fronts are the same as the B9 S4 pads). iSweep at Neuspeed are about $300 front and $200 rear for the IS3000 pads which sound like they're a good compromise street and track. Issue with iSweep pads is no wear warning harness and $20 per wheel for the brake pad wear sensor by pass.

I'm pretty sure it's the same pad, but can't confirm. I wouldn't worry about the brake pad wear sensor too much. I just soldered the wire in a loop and plugged it back in. I'm pretty sure it can be disabled via ODB11 as well. The pads are easily visible so it's easy to check the wear level.

[stummiller]

Thanks for all this great info. Has anyone been able to confirm by installing the pads that the front pads are indeed the same shape as the S5 / RS5 and fit in the 8Y RS3 calipers? For example, the Hawk pads in the link provided do not show fitment for RS3. Thanks.

[stummiller]

I am gearing up to replace front rotors (Girodisc) and front and rear pads (iSweep IS3000). I have seen conflicting info on the caliper bolts that mount the front calipers to the hub (not the ones securing the calipers to the mounting bracket) saying these are stretch bolts and should be replaced each time. I've checked a number of You Tube DIY videos and none I have seen so far talk about replacing the 21 mm caliper mounting bolts that secure the caliper carrier to the front hub. Anyone here able to confirm whether these are stretch bolts an should be only used once / replaced each service? TIA.

[xeonoex]

The front caliper carrier bolts are not listed as one time use or torqued like a stretch bolt according to the manual. The rear caliper carrier bolts are, but you do not need to remove them to switch the pads. You will when switching the rotors though.

Front bolts are torqued to 200 nm.
Rear bolts are torqued to 90 nm + 90 degrees.

Rear requires a compact 14mm triple square and a 7mm allen. You only need the allen if you're just doing the pads.

[stummiller]

The front caliper carrier bolts are not listed as one time use or torqued like a stretch bolt according to the manual. The rear caliper carrier bolts are, but you do not need to remove them to switch the pads. You will when switching the rotors though.

Front bolts are torqued to 200 nm.
Rear bolts are torqued to 90 nm + 90 degrees.

Rear requires a compact 14mm triple square and a 7mm allen. You only need the allen if you're just doing the pads.

Thanks very much for this!

[stummiller]

Was over at a friends today doing brakes on my 2023 8Y. Got the Girodisc front rotors and iSweep pads installed with no issues. Challenges came when trying OBDeleven to release rear parking brakes for service to replace rear pads. We were not able to get past SFD unlock issues. He's got OBDeleven Pro. We had the hood open. Went through the screen prompts to complete 2 factor authentication but OBDeleven kept failing when trying to execute function to release parking brake with a generic "there was a problem with SFD" message. Anyone been able to get rear parking brake release to work using OBDeleven or similar tool on the 8Y?

[xeonoex]

Was over at a friends today doing brakes on my 2023 8Y. Got the Girodisc front rotors and iSweep pads installed with no issues. Challenges came when trying OBDeleven to release rear parking brakes for service to replace rear pads. We were not able to get past SFD unlock issues. He's got OBDeleven Pro. We had the hood open. Went through the screen prompts to complete 2 factor authentication but OBDeleven kept failing when trying to execute function to release parking brake with a generic "there was a problem with SFD" message. Anyone been able to get rear parking brake release to work using OBDeleven or similar tool on the 8Y?

Did you unlock SFD on the brake module before trying to release the parking brake? There is a setting to do it automatically, but it fails sometimes, so I would just do it as the first step. It was a little finicky for me as well, but it eventually worked. You'll also need to lock it again when you're done. It does lock/unlock per module, so each has to be done separately.

I recommend following these steps once SFD is unlocked: http://wiki.ross-tech.com/wiki/index...AU)_ABS_Brakes
Just using OBD11 instead of VCDS.

[MMisencik157]

For anyone who bought the iSweep or Porterfield rear pads can you advise if they have the cutouts on the inboard side that the OE pads have? They don't show them on their website and I'm trying to understand if they required any trimming to fit or if the cutouts are not required.

[xeonoex]

I haven't tried, but I doubt they do. If they are listed as compatible with the 8V, then I think you can say for sure that they do not have the cutout. I think the diagram is accurate on the porterfield site. I don't think anyone has the pad shape yet from what I understand talking to Pete at 529innovations, and I have no idea if they would actually fit.

Here is what the OEM pad looks like

[LittleDevil]

Anyone have the part #'s for those that have carbon ceramics front brakes? Are the 8y and 8v ceramic calipers/rotors/pads the same? As it seems like for steel fronts they are different than 8v vs 8y.

RS3 8V and 8Y have different front brakes and different brake pads too. RS3 8V have 4 pads per caliper and 8 piston caliper, RS3 8Y have 2 pads per caliper and 6 piston caliper.

[stummiller]

For anyone who bought the iSweep or Porterfield rear pads can you advise if they have the cutouts on the inboard side that the OE pads have? They don't show them on their website and I'm trying to understand if they required any trimming to fit or if the cutouts are not required.

I have the iSWEEP pads in the rear and they do have the cutout and springs but do not have the wear sensors cutouts if that's what you mean. I bought a bypass similar to these https://www.ecstuning.com/b-ecs-part...01933ecs07a~a/ and it works great.

[S3DUDE]

Was over at a friends today doing brakes on my 2023 8Y. Got the Girodisc front rotors and iSweep pads installed with no issues. Challenges came when trying OBDeleven to release rear parking brakes for service to replace rear pads. We were not able to get past SFD unlock issues. He's got OBDeleven Pro. We had the hood open. Went through the screen prompts to complete 2 factor authentication but OBDeleven kept failing when trying to execute function to release parking brake with a generic "there was a problem with SFD" message. Anyone been able to get rear parking brake release to work using OBDeleven or similar tool on the 8Y?

I have the Rosstech with the 3 VIN package that I haven't used yet but I am terrified to get to the point where you were at. It sucks to lift the car, remove the rear tires go through all the prompts on the menu just to be stuck on that step when you need the software to release pressure from the rear calipers. I will probably do the front ones myself but will pay a specialized shop to do the rears. Another thing that I am trying to do is to pick a set of semi-race rear brake pads that I can be OK with at the track and also on the streets but I ask willing to swap the front pads after a road course.

The one and only time that I took my 8V RS3 to the track on Carbotech 1521 they did not hold a candle after 3 laps. Neither I had the proper fluid not the pads were capable. I had the 2 piece rotors which did well but the rear rotors were glowing like crazy. A mechanic from Audi that worked on my car and was watching me told me that I would have to go into VCDS and turn down sensitivity for rear yaw control on stability control so that it wouldn't use much of ABS activation.