MTEC Dimpled & Grooved Discs

[Pickster]

Bought some MTEC discs and pads and local garage fitted them while car was in for MOT.
Dimpled & Grooved
Now weathers good and I'm using the car in anger so to speak and getting the roof down every opportunity.

I'm noticing various noises.

when running normally I'm hearing what I can only assume is a rub from the pads and discs intermittent increases with speed can't make out if its both sides or only 1.
under braking the the intermittent sound is replaced with a constant sound fast click which I'm thinking is the pads engaging with the groves on the disks.

Question is am I being paranoid and is the noise just the price of running with the grooved discs and would be unnoticeable with smooth discs or have I got a problem with the warped disks or poor installation.

Any thoughts ?

 

[mr.tourette]

From everything I've heard they are noisy in use i.e when you press the pedal, the constant noise may be a slightly binding brake caliper

 

[Rockhopper]

Thats what they do, mine are the same. I was going to get them on the back as well, don't think I'll bother!

 

[Pickster]

Thanks for the replies. I suspected as much, and same won't be bothering putting them on the rears.

 

[flybobbie]

Had my Mtec on the car must be 6 years now on my 23i.
They are quiet, no noise and seem to be lasting a long time.
Little pad wear as would be expected.
Picture taken back in 2016

If they are noisy, then something gone wrong somewhere.
I think my discs might be on backwards.

 

[markplant]

Not noticed any noise with mine, had front and rear done

 

[Pickster]

Not noticed any noise with mine, had front and rear done

So no noise even under hard braking ?
:?

 

[Rucky]

I agree, Mtec Drilled and grooved front and back and areall silent.
No clicks whirrs or squeals in over 2 years.

They work just great IMO

Cant see how a pad can catch on a disc groove personally

 

[Rockhopper]

They make the same whooshing sound that the drilled disks do on the various motorbikes I've had over the years, I can't hear the ones on the Z4 unless I've got the roof and windows down.

 

[markplant]

Not noticed any noise with mine, had front and rear done

So no noise even under hard braking ?
:?

Maybe in not trying hard enough, I tend not to jump on the brakes unless an emergency

 

[mr.tourette]

odd that some are running silently, pretty much every thread on here about them down the years have mentioned noisy operation, its the reason I've always avoided them

 

[flybobbie]

Never seen any threads on MTEC discs, good or bad.
I would say go for it, they look good and reduce wear.
My car discs have no scores and about a finger nail thickness lip after 40k miles.
And checked my discs are on the correct way round.

 

[mcbutler]

Might be your pads, do you have std pads or an upgraded item?

 

[Pickster]

Pads are standard MTEC own brand bought with the discs.
The noise under braking sounds like a fast click ,almost like an auto ignition on a gas appliance.
Then there's the rub increases and decreases with speed.
Thought they were just bedding in noises but I've done over a 1000 miles with them now and still same. Hence I'm thinking there's an issue

 

[flybobbie]

Not just a stone caught in a pad. Is it both wheels in a pair?
Tried jacking up and turning by hand?

 

[Rockhopper]

This is the main reason why most car makers only fit plain solid (or ventilated) disks to their cars. Like i said before I've had many bikes over the years which have had drilled disks and they were all noisy but you only really hear it if you ride without a helmet. I can even hear it on my mountain bike which has drilled floating disks on both ends.

Some people notice the noise more than others do. Its more obvious with the roof and windows down and even more obvious if you are driving down narrow roads where the sound reflects off buildings and walls. I can't hear any noise with the roof up.

I have MTEC dimpled and grooved disks with their own pads, they work very well (the pads are very dusty though) and they are certainly cheap enough.

 

[flybobbie]

I have no noise and use Green stuff pads, very little dust unlike the BMW pads that came off.

 

[Silverstar]

Pads are standard MTEC own brand bought with the discs.
The noise under braking sounds like a fast click ,almost like an auto ignition on a gas appliance.
Then there's the rub increases and decreases with speed.
Thought they were just bedding in noises but I've done over a 1000 miles with them now and still same. Hence I'm thinking there's an issue

I would contact Mtec and query it with them and see if they say this is normal or if there is a defect.

 

[flybobbie]

Where the mtec pads rubber backed like green stuff pads to stop noise.

 

[Pickster]

Interesting development, possibly school boy error.
Jacked the car up on Saturday spun the wheel to see which was making the noise, jacked left then right and spun both wheels.
there was a noise but it wasn't rubbing to the extent of stopping the wheel. Decided I'm gonna try some EBC pads maybe green stuff.

Dropped the car back down, was gonna nip to shops for alcoholic supplies before the Formula 1 kicked off with the sprint race.

Well I though I'd broken it good and proper.

Tyre pressure alarm.
Power steering alarm
Air Bags, Belt tensioner and belt force failure.
ABS & Brake force distribution failed.
Roof wouldn't close.

Suffice it to say it didn't like being jacked up and the wheels spun !!!!

Ran it up and down the drive a couple of times and most of the faults cleared bar an engine fault light, couldn't get Carly connected to clear it, It tried to do an update and then fell over. left it for the night went out Sunday and fired it up all faults cleared.