[Arcam]

For those that were following the Tarox discs thread (sorry can't past the link here because the forum software is broken) I have now fitted the replacement discs and RS29 pads.

The issue with the original Tarox discs and RS29 pads were both caused by them being oversized.

1st set of Tarox discs @ 34.31mm and they should have been 34.00mm

2nd set of Tarox discs @ 34.04mm

The Pagid pads were @ 17.25mm and they should have been 16.5mm, I had a new set ground down to 16.6mm pending delivery of new stock with the correct sizing.

The upshot is that the pads and discs now hang together correctly, I have not bedding them in yet and it will be a couple of hundred street miles before I do so to ensure that the pads and discs faces have fully mated, I also swapped out my brake fluid today, the OEM brake reservoir is a real PITA to see the level even with a light shining on it! I will report back one I have carried out the bedding cycle.

I think that both Pagid and Tarox come off a little poorly in this, both of them need to tighten up the QC stage of their manufacturing process, both of them have been alerted to the issues and have acknowledged them.

Sorry about the picture order the forum software does not allow me to place them as I would wish and yes I have tried the basic uploaded, I am sure you will be able to work it out, happy to answer any questions.

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Edited by Arcam, 17 July 2016 - 08:11 AM.

[Uncle Fester]

http://www.audirs3oc...fitted/?p=86391

[rocketer]

Arcam - another 12 day has passed . Have you tested everything more now and how do they feel - better? If you compare Pagid DS2500 vs RS29 - which one is more proper to use for daily driving - no track days?

[Arcam]

Arcam - another 12 day has passed . Have you tested everything more now and how do they feel - better? If you compare Pagid DS2500 vs RS29 - which one is more proper to use for daily driving - no track days?

I have a track day on Monday at Bedford GT circuit so I was holding off till Tuesday, but at this stage I will just say that the discs howl a bit like a failed wheel bearing which is not pleasant but you get used to it.

I suspect it is caused by the way the cooling holes are drilled into the billet discs and when rotating above 15mph they create a venturi effect.

Stopping power with the RS29s is great on road but I never had issue with the oem discs and pads for street use.

Update: Sorry you asked about pads, for street/fast road the DS2500 pads are plenty good enough and are 1/2 the price of RS29s.

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Edited by Arcam, 28 July 2016 - 10:19 PM.

[Arcam]

Trackday use of Tarox Discs Update:

The front discs and pads performed just fine with zero fade issues. Once the pads and discs were up to temp they were silent in operation, during the warm up process I adopt to get the temps stable there was some pad groan but that was expected and normally happens with the RS29 pads, I have had this same experience on 3 different vehicles I have used the RS29s on with different discs makes.

There is still the venturi noise that you get from the billet discs cooling "system" which can be intrusive at times, I can't see what else could be causing the noise like a failing wheel bearing as even if you apply the brakes lightly or hard the noise remains and if it was pad/disc face pattern that was contributing to the noise I would expect that to change on brake application.

The rear Tarox discs with Yellow Stuff pads worked flawlessly and can be 100% recommended.

Added note:

The front discs don't appear to rust like a normal cast disc, I have had the car stood after getting soaked and no real trace of rust after 2 days stood, must be the formulation of the steel used, I will ask Tarox.

Happy to answer any questions.

Edited by Arcam, 04 August 2016 - 04:52 PM.

[rocketer]

Arcam: Good to hear that everything worked as expected. The howling from front discs isn't so nice though. When you say yellow pads on rear brakes do you mean yellow pagid pads or EBC yellow? I have also looked at Stoptech and Movi't discs but haven't decided yet which of these are the best? Although it seems like anything is better than OEM because aftermarkets have noticed that a car have left and right discs.

Edited by rocketer, 04 August 2016 - 06:42 PM.

[Arcam]

Arcam: Good to hear that everything worked as expected. The howling from front discs isn't so nice though. When you say yellow pads on rear brakes do you mean yellow pagid pads or EBC yellow? I have also looked at Stoptech and Movi't discs but haven't decided yet which of these are the best? Although it seems like anything is better than OEM because aftermarkets have noticed that a car have left and right discs.

On the rear I used EBC Yellow Stuff as Pagid do not offer a performance pad for that caliper. Don't know where you live but are very welcome to hear the discs and feel the braking performance for yourself.

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[rocketer]

On the rear I used EBC Yellow Stuff as Pagid do not offer a performance pad for that caliper. Don't know where you live but are very welcome to hear the discs and feel the braking performance for yourself.
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Ok, would have been nice but live in Sweden. Performance I am sure there is enough and probably more compared to oem. I am only interested to get some that last for as long I am gonna keep it, don't want to buy new ones every 6 months.

[Arcam]

Ok, would have been nice but live in Sweden. Performance I am sure there is enough and probably more compared to oem. I am only interested to get some that last for as long I am gonna keep it, don't want to buy new ones every 6 months.

The Tarox ones don't show any groves or wear marks so far, still early days but I think the fronts will be very hard wearing.

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[Gorillajebus]

The slotted Tarox discs are know for the sound they make. 

Some members of the German Golf R forum also talked about the slotted Tarox discs and confirmed that they're quite noisy. (due to the discs slotted surface)

 

So Arcam you used them on track and you were satisfied with the performance? Do you use steel brake hoses and another brake fluid?

[peazz]

Would u recommend them as a worthwhile upgrade over the standard discs? Have they started to turn blue yet from any overheating?

[Arcam]

The slotted Tarox discs are know for the sound they make.
Some members of the German Golf R forum also talked about the slotted Tarox discs and confirmed that they're quite noisy. (due to the discs slotted surface)

So Arcam you used them on track and you were satisfied with the performance? Do you use steel brake hoses and another brake fluid?

I used Motul RBF660 brake fluid as Opie were out of stock of my normal Gulf Racing fluid. I run OEM flexible hoses at present and in the past on my other cars I never thought them worth swapping, but on this car I think it might be of benefit as the pedal is a little softer than I like.

The slotted aspect of the disc is fine as some noise is to be expected, my issue is with the billet disc cooling system, one I don't think they cool as well as a cast AP or Alcon disc with curved internal cooling vanes and the venturi effect of the holes is anoying.

Unfortunately I left my pyro gun at home so I did not manage to take the temps if the calipers or discs as I had originally intended

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[Gorillajebus]

Okay since English is not my first language I'm going to need a little assistance here  .

 

With billet cooling system you mean the internal cooling of the disc? Like that? Those curved  elements inside the disc itself.

 

 

Do those Tarox discs have straight elements?

 

The venturi effect "sucks" the air out of discs with bend elements which leads to improved cooling. Is that right? 

[Arcam]

Okay since English is not my first language I'm going to need a little assistance here .

With billet cooling system you mean the internal cooling of the disc? Like that? Those curved elements inside the disc itself.



Do those Tarox discs have straight elements?

The venturi effect "sucks" the air out of discs with bend elements which leads to improved cooling. Is that right?

The picture you have posted shows the normal AP or Alcon cast disc cooling system.

Because the Tarox disc is cut from a billet of steel (imagine a solid steel shaft 400mm in diameter and a slice cut from the end) that is machined down to the required size (370 x 34mm). The cooling system can't be cut as a spiral, so what Tarox do is cut holes from the outside of the disc to the inside on an angle to try as long a cooling channel as possible.

I have not measured this but I suspect the disc is heavier because of this, please see shot of outer disc edge below. I believe that this also causes the "wheel bearing failure" noise. Are the Tarox discs you refer to on the German forum cast or billet?



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Edited by Arcam, 14 August 2016 - 12:38 PM.

[Gorillajebus]

I just reread the the thread but there was no mentioning of whether the disc was cast or cut out of billets.

 

The person who used the F2000 disc said that the noise is due to the slots in the disc. A drilled disc does not make as much noise.

He also said that the F2000 does start to make noises when reaching its working temperature which is as mentioned above due to the slots.

 

He said he switched to AP-Racing discs and EBC Yellows which may sound similar to the F2000.

Listen here at minute 2:00 when he starts braking and turn up the volume: 

[Arcam]

I just reread the the thread but there was no mentioning of whether the disc was cast or cut out of billets.

The person who used the F2000 disc said that the noise is due to the slots in the disc. A drilled disc does not make as much noise.
He also said that the F2000 does start to make noises when reaching its working temperature which is as mentioned above due to the slots.

He said he switched to AP-Racing discs and EBC Yellows which may sound similar to the F2000.
Listen here at minute 2:00 when he starts braking and turn up the volume:

Yeah that is normal for a groved disc that is heating up, once past that temp they quite down. That is not the noise I was referring to, I believe the noise I have is down to the billet disc cooling holes.

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[Gorillajebus]

Is it possible for you to capture the sound in a video or audio file?

[Arcam]

Is it possible for you to capture the sound in a video or audio file?

Leave it with me and I will see what I have/can do.

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[Gorillajebus]

I just stumbled upon another post.

 

A RS3 8P driver stated that the Tarox F2000 work pretty good in combination with the EBC Yellows.

Althoug the discs to make a "singing" noise when braking with more force. He thinks it is due to the disc grooved striking surface.

[Arcam]

The "wheel bearing sound" I am taking about is when you are driving without the brakes being apply and with them cold / normal driving on the road.