MK5 Golf GTI

All Things Mk5 => Mk5 General Area => Topic started by: Lewo on August 12, 2022, 12:44:05 am

Title: Brembo discs warping?
Post by: Lewo on August 12, 2022, 12:44:05 am
Got a bit of shaking going on when braking.
Has anyone had issues with Brembo discs warping at all?
upgraded the fronts to mk7r 340s, rears are standard.

What other make of discs are ok? Ate has been mentioned.

Just road use,  and not ragged much at all so if they have warped then that pretty poor....

Cheers.
Title: Re: Brembo discs warping?
Post by: Clarkj93 on August 12, 2022, 07:44:43 am
New discs or 2nd hand with the 7r calipers? I've put my old brembo discs through he'll on my old std setup on Road and on multiple track days  and they were the only thing that didn't fail on that setup.  They are generally good quality.
Title: Re: Brembo discs warping?
Post by: pudding on August 12, 2022, 09:02:42 am
My Brembo rears warped pretty soon after fitment  :grin:  Rears ffs, they only do 30% of the braking and they still warped  :grin: :grin: :grin:

As we've discussed before, everyone thinks of giant Lambo/Ferrari brakes whenever the word Brembo comes up, but they sell cheap junk in the aftermarket like a lot of other brands.  Just for reference, my Brembos (and pads) were the standard spec ones from ECP and both are terrible.  Not using them again.

Lewo - go ATE or genuine VW.  And make sure the hub mating surface is sanded back completely flat before fitting a new disc onto them.
Title: Re: Brembo discs warping?
Post by: GilesWoodward59 on August 12, 2022, 11:31:47 am
I’ve been using EBC turbo groove discs for a while now and they have stood up well. I know EBC haven’t got a great reputation but I think in recent years their quality has improved significantly.


(https://i.postimg.cc/NF3CKJwp/8-A8443-B7-DF34-478-E-8097-2-D68-FCD5053-D.jpg) (https://postimg.cc/dZ9jX93y)
Title: Re: Brembo discs warping?
Post by: rich83 on August 12, 2022, 12:39:49 pm
Never had brembo HC discs warp. They seem well made to me. As pudding alludes to, not all brembo are made alike
Title: Re: Brembo discs warping?
Post by: Lewo on August 12, 2022, 01:47:20 pm
New discs or 2nd hand with the 7r calipers? I've put my old brembo discs through he'll on my old std setup on Road and on multiple track days  and they were the only thing that didn't fail on that setup.  They are generally good quality.

All new calipers & discs.
Title: Re: Brembo discs warping?
Post by: Lewo on August 12, 2022, 01:49:20 pm
My Brembo rears warped pretty soon after fitment  :grin:  Rears ffs, they only do 30% of the braking and they still warped  :grin: :grin: :grin:

As we've discussed before, everyone thinks of giant Lambo/Ferrari brakes whenever the word Brembo comes up, but they sell cheap junk in the aftermarket like a lot of other brands.  Just for reference, my Brembos (and pads) were the standard spec ones from ECP and both are terrible.  Not using them again.

Lewo - go ATE or genuine VW.  And make sure the hub mating surface is sanded back completely flat before fitting a new disc onto them.

Good shout about sanding back the hub. I uually put a smear of copaslip on those faces .
Title: Re: Brembo discs warping?
Post by: Lewo on August 12, 2022, 01:51:48 pm
I’ve been using EBC turbo groove discs for a while now and they have stood up well. I know EBC haven’t got a great reputation but I think in recent years their quality has improved significantly.


(https://i.postimg.cc/NF3CKJwp/8-A8443-B7-DF34-478-E-8097-2-D68-FCD5053-D.jpg) (https://postimg.cc/dZ9jX93y)

£?
Title: Re: Brembo discs warping?
Post by: Lewo on August 12, 2022, 01:53:16 pm
Never had brembo HC discs warp. They seem well made to me. As pudding alludes to, not all brembo are made alike

Not heard of Brembo HC, these are different from the standard Brembo?
Title: Re: Brembo discs warping?
Post by: GilesWoodward59 on August 12, 2022, 02:18:45 pm
I’ve been using EBC turbo groove discs for a while now and they have stood up well. I know EBC haven’t got a great reputation but I think in recent years their quality has improved significantly.


(https://i.postimg.cc/NF3CKJwp/8-A8443-B7-DF34-478-E-8097-2-D68-FCD5053-D.jpg) (https://postimg.cc/dZ9jX93y)

£?

Can’t remember exactly - got them from https://www.ebcbrakeshop.co.uk/ with a 15% discount they were offering at the time. Watch you get the right size - rears are 286mm (they also sell a 260mm which didn’t fit my Eddy).
Title: Re: Brembo discs warping?
Post by: rich83 on August 12, 2022, 03:14:04 pm
Never had brembo HC discs warp. They seem well made to me. As pudding alludes to, not all brembo are made alike

Not heard of Brembo HC, these are different from the standard Brembo?

High carbon variant.
Title: Re: Brembo discs warping?
Post by: pudding on August 12, 2022, 03:24:10 pm
My Brembo rears warped pretty soon after fitment  :grin:  Rears ffs, they only do 30% of the braking and they still warped  :grin: :grin: :grin:

As we've discussed before, everyone thinks of giant Lambo/Ferrari brakes whenever the word Brembo comes up, but they sell cheap junk in the aftermarket like a lot of other brands.  Just for reference, my Brembos (and pads) were the standard spec ones from ECP and both are terrible.  Not using them again.

Lewo - go ATE or genuine VW.  And make sure the hub mating surface is sanded back completely flat before fitting a new disc onto them.

Good shout about sanding back the hub. I uually put a smear of copaslip on those faces .

Yeah get them clinically clean as its surprising how little dirt on the hub face can cause major disc run out.
Title: Re: Brembo discs warping?
Post by: DBXdarkangel on August 12, 2022, 09:35:10 pm
My brembo rear discs and pads are perfectly fine. Go with what you like and a trusted brand I say.
Forums will always have lovers and moaners of the same subject.
Title: Re: Brembo discs warping?
Post by: LC5F on August 12, 2022, 10:53:22 pm
Copper grease is made up of copper filings - so not ideal between disc and hub.
ceramic grease or nothing would be better choices.

Mintex link talking about grease...not the  is the word is the word one:

https://mintex.com/copper-slip-vs-ceratec/?lang=en-gbr (https://mintex.com/copper-slip-vs-ceratec/?lang=en-gbr)
Title: Re: Brembo discs warping?
Post by: Lewo on August 13, 2022, 03:29:33 am
Copper grease is made up of copper filings - so not ideal between disc and hub.
ceramic grease or nothing would be better choices.

Mintex link talking about grease...not the  is the word is the word one:

https://mintex.com/copper-slip-vs-ceratec/?lang=en-gbr (https://mintex.com/copper-slip-vs-ceratec/?lang=en-gbr)

Ok cheers. Will clean and use ceramic if anything.
Title: Re: Brembo discs warping?
Post by: rich83 on August 13, 2022, 06:08:01 am
Copper grease is made up of copper filings - so not ideal between disc and hub.
ceramic grease or nothing would be better choices.

Mintex link talking about grease...not the  is the word is the word one:

https://mintex.com/copper-slip-vs-ceratec/?lang=en-gbr (https://mintex.com/copper-slip-vs-ceratec/?lang=en-gbr)

I use aluminium antiseize. Works great and means nothing gets stuck.
Title: Re: Brembo discs warping?
Post by: Lewo on August 18, 2022, 12:28:16 am
Copper grease is made up of copper filings - so not ideal between disc and hub.
ceramic grease or nothing would be better choices.

Mintex link talking about grease...not the  is the word is the word one:

https://mintex.com/copper-slip-vs-ceratec/?lang=en-gbr (https://mintex.com/copper-slip-vs-ceratec/?lang=en-gbr)

I use aluminium antiseize. Works great and means nothing gets stuck.

Cheers, will look into getting some when covid has gone somewhere else!
Title: Re: Brembo discs warping?
Post by: LC5F on August 25, 2022, 09:47:01 pm

I use aluminium antiseize. Works great and means nothing gets stuck.

Yes - I just got a tub this year - the way it coat your hands is hypnotic!
think would work really well within aluminium -thinking subframe bolts.
Title: Re: Brembo discs warping?
Post by: Lewo on August 30, 2022, 11:17:03 am
Anti seize bought.
An idea, maybe a stupid idea but.....would it be worth clamping the bake hose on each caliper one at a time and test on one of the many quiet roads around here to see if that shows up the offending brake/s?
Would the clamp hold ok under braking pressure?
Title: Re: Brembo discs warping?
Post by: pudding on September 03, 2022, 03:18:20 pm
I wouldn't do that mate, it's brakes man  :grin:  If someone pulls out in front of you and you can't stop, and the rozzers see a clamp on your brake hose, yeah, that could be a bad day for you  :grin: The clamp probably wouldn't do a lot anyway tbh!
Title: Re: Brembo discs warping?
Post by: Lewo on September 04, 2022, 10:10:59 pm
I wouldn't do that mate, it's brakes man  :grin:  If someone pulls out in front of you and you can't stop, and the rozzers see a clamp on your brake hose, yeah, that could be a bad day for you  :grin: The clamp probably wouldn't do a lot anyway tbh!

Gotta catch me first.... In a ditch on the first bend  :signLOL:
Was just a thought, but not a good one it seems!
Title: Re: Brembo discs warping?
Post by: john_o on September 06, 2022, 12:17:07 pm
can you put up any pictures? so we can see all 4 faces of the discs.
stuck caliper might show blueing on disc, or even pad deposits (which can also cause wobble)
you say new calipers and discs but new/ s/h pads and if so what make?   did you follow break in procedure?
have you checked your wheel bolts arent loose?
could take it all off and cleanup and clean mating surfaces.
if pad deposit then an italian tuneup with cooldown
would seem unusual to have a disc warp in this way given what youve described tbh (unless youve ragged it then came to a stop and held the brake pedal down for ages (to let discs heatsoak into pads etc)