Grinding noise from calipers
Discussion
So today i replaced my front discs and brakes from brembo discs and pagid pads to Mtec discs and ebc yellow stuff pads.
Everything was cleaned properly, all torqued down to the recommended specs and copper ease grease applied to prevent vibrations.
now for some reason on the right hand side (drivers side) i am getting some weird grinding noises when braking, it only seems to be at 20mph or less( unless it is there i just cant hear it at higher speeds).
It was the same when i had the brembos and the pagid but was a lot less noisey.
Is it something to worry about? or do we think its the pads just bedding in?
The brakes work great and theres no vibration in the steering wheel when braking.
Everything was cleaned properly, all torqued down to the recommended specs and copper ease grease applied to prevent vibrations.
now for some reason on the right hand side (drivers side) i am getting some weird grinding noises when braking, it only seems to be at 20mph or less( unless it is there i just cant hear it at higher speeds).
It was the same when i had the brembos and the pagid but was a lot less noisey.
Is it something to worry about? or do we think its the pads just bedding in?
The brakes work great and theres no vibration in the steering wheel when braking.
Not caught the disk backing plate during the change have you? I had a similar experience, couldn’t work Out the noise, then I realised I’d squashed said plate a little when getting handy with the tapping stick to remove the old cold-welded on discs. 
A simple push back of the slightly rusty plate and all was well again
A simple push back of the slightly rusty plate and all was well again
ezi said:
Last time I used Yellow Stuff pads years ago they had an especially abrasive bedding in layer on them which I seem to remember being rather loud until it had worn down.
Same here, I've recently fitted Yellowstuff to my RX8 and they were quite noisy at first.They do get quieter after some use.
E-bmw said:
bobalong135 said:
So today i replaced my front discs and brakes from brembo discs and pagid pads to Mtec discs and ebc yellow stuff pads.
Can't quite get my head round that one.You have gone from 2 of the top 10 braking parts manufacturers that there are to 2 of the bottom 10!
You have heard wrong about EBC yellow, they are terrible pads as an upgrade.
You would have been far better going for an upgraded Pagid, Mintex, Brembo, AP, Ferodo, in fact pretty much any pad really.
Grooved discs themselves are not an upgrade as there is actually marginally less surface area of the disc in contact with the pads assuming all else is the same.
They are only of any real use if you are on an actual track day & giving it lots!
However you have bought pretty much the cheapest of the cheap grooved discs on the bay of e.
You would have been far better going for an upgraded Pagid, Mintex, Brembo, AP, Ferodo, in fact pretty much any pad really.
Grooved discs themselves are not an upgrade as there is actually marginally less surface area of the disc in contact with the pads assuming all else is the same.
They are only of any real use if you are on an actual track day & giving it lots!
However you have bought pretty much the cheapest of the cheap grooved discs on the bay of e.
The EBC pads I've have used have been OK-ish at braking, but consistently very abrasive and gave a shorter disc life than any of the other brands I've used. When I bought them, Green/Red/Yellow were the only ones recommended for fast road use, with Red and Yellow not recommended for cold conditions. I tried them all. They seemed pretty similar, mostly OK but pretty dead on cold days until they had some heat in them. I haven't tried Orange/Blue but they're advertised as track use only and I imagine they're even worse from cold.
I consider Ferodo DS2500/DS3000 a big step up from all the Mintex and EBC types I've used.
You should probably think about why you're using grooved discs. Other than as a fashion statement, the only performance related reason for using grooved discs is that the pads are overheating and outgassing. Grooved discs can help solve that problem, but in return you have less braking effort, more noise and more pad wear. If the pads are mostly OK but seem to 'go off' after extended hard use and you think they are overheating and outgassing then grooved discs might be a good answer, but that shouldn't be your first choice - before that, consider whether you can get away with harder pads and also whether the problem might be in the caliper rather than the pad.
I consider Ferodo DS2500/DS3000 a big step up from all the Mintex and EBC types I've used.
You should probably think about why you're using grooved discs. Other than as a fashion statement, the only performance related reason for using grooved discs is that the pads are overheating and outgassing. Grooved discs can help solve that problem, but in return you have less braking effort, more noise and more pad wear. If the pads are mostly OK but seem to 'go off' after extended hard use and you think they are overheating and outgassing then grooved discs might be a good answer, but that shouldn't be your first choice - before that, consider whether you can get away with harder pads and also whether the problem might be in the caliper rather than the pad.
Just finished restripping that side and re assembling couldn’t find any problems and the grinding is still there.
Even if yellow stuff isn’t the best is still an upgrade from what I was using as you can feel
The differnace.
I understand grooved and drilled disc may have less surface area on them for braking however I was going for more visual then anything as all
My research suggests there isn’t a massive difference in performance between what I
Got and standard vented atleast for fast road use.
Even if yellow stuff isn’t the best is still an upgrade from what I was using as you can feel
The differnace.
I understand grooved and drilled disc may have less surface area on them for braking however I was going for more visual then anything as all
My research suggests there isn’t a massive difference in performance between what I
Got and standard vented atleast for fast road use.
Whilest we are on the topic also what makes a good brake disc? What is the differnace between a pair costing £120 and a pair costing £70? I know for that sort of price range your be looking at gray cast iron but does one have more graphite in it? Does one work to tighter tolerances or been heat treated better? Generally something that I’ve been thinking about the last couple weeks
That's a little cynical, I feel.
There are differences between disc manufacturers, which can include thickness of the two friction discs (on a vented disc), carbon and alloy content, cooling vane design, machine finishing of the friction surfaces, and some have paint coating on non-friction surfaces which is purely cosmetic but still an extra manufacturing process.
There are differences between disc manufacturers, which can include thickness of the two friction discs (on a vented disc), carbon and alloy content, cooling vane design, machine finishing of the friction surfaces, and some have paint coating on non-friction surfaces which is purely cosmetic but still an extra manufacturing process.
Martin350 said:
I'm very pleased with mine so far.
Out of curiosity, what don't you like about them Mr2Mike?
Mr2Mike said:
It's not me complaining about them! Some of the original EBC car brake pad compositions were pretty poor (the original Greens were useless, no better than standard replacements IME) but they have improved over the years, and whilst not up there with the high end Pagids and Carbon Lorraine, they do work reasonably well given the much lower cost.
Oh yes, so it wasn't, sorry about that!Yeah, I tried Greenstuff many years ago and was totally underwhelmed but, as you say, EBC do change their compounds from time to time so I'm sure they'll be better now.
I was quite impressed with Redstuff when I tried those, again a long time ago, maybe 10 years.
I'll most likely never use Ferodo DS2500s again.
Both times I have followed their bedding in instructions as closely as I could and both times ended up with pad transference to the discs and low speed brake judder.
I've never tried higher end Pagids, I'll definitely give those ago one day.
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