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Image of drivers side which I took off after above emails to check.

I am now in an email dispute with MTEC. They are saying they have never seen this before and have not had reports of any other failings and they are speaking with their tech team. They are happy to send me out new discs at no cost however feel they are pushing this back on my as a fitting...

No ABS light so hopefully all good. All the teeth looked ok on the rings. Nice one for sorting airbag light 👍 I was under the impression that MTEC were meant to be a decent brand. Clearly not. The bearings, bar the seal on the drivers side were actually tight as hell and smooth. I think the...

I will have to check the sensors. I already get the service light on due to the airbags being removed. Will it just be the service light if the abs sensors are broken aswell? Or is there any other way to tell

Ok…. So further investigation has proven a massive failure with the bearings. Either not sent out correctly from factory or very poor quality in manufacture. Basically, the circlip had come out from its housing (unless it was never in there from the start) which allowed the bearings to slide...

Nice. You can come out with me anytime 👍 Might not have any brakes though 😉

Off topic… are you going to CSF this year @JamesBryan

Ah perfect. Found them. Does the abs ring just pull off?

The rings on these MTEC ones are brand new so I could swap them over. Still can’t see the 26 tooth ones on there though?

Can’t seem to find the SNR ones on there? No

I won’t be putting these discs back on anyway now so I’m going to investigate.

Yes that makes sense

My theory is, after many cups of tea…. The circlip hasn’t been seated properly, from MTEC factory I may add. It didn’t make any noise to start with but when heat has got into the brakes it has allowed the bearing to slide outwards, towards the wheel. This has then allowed the disc to sit...

Nope, not any play. It doesn’t look like the circlip is in any type of recess? Looking on frogjam at the OE Brembo discs, the bearing seems to sit a lot closer to the hub face than these MTEC ones.

Here are some cleaner pics. Could it be the bearing has been pressed to far in? Or will it only go so far and it seats against something? It didn’t make any grinding noises until around my 3rd session out on track.

There isn’t a circlip on the side you have shown, only one on the other side. It doesn’t look like the circlip is sitting in any type of recess either… I’ll clean it up and get a pic

Looking into that now. Going round the father in laws who’s a mechanic he will prob see something I’m not

Yeah, that’s a bit of a pisser. I had them to hand until a day before the track day when I binned them 😂

I just don’t see what else it could be. This was the first track day on them and the previous discs didn’t do this. What else could it be lol, there is nothing there to go wrong really 😂

Yep, With the spacer the correct way round as you have said, the disc is catching. From looking, it will miss the bolts but it’s actually scraping on the hub carrier (think that’s what you call it) Distance from rear face of disc where it sits against the hub is around 42/43mm

Even still, with it catching the bolts and also the hub itself, surely the disc is to close to the hub to be catching?

Hold up hold up hold up. Your now both saying opposite things 😂 I’m confused as hell right now and the two guys I do listen to are saying opposites 😂 Edit - no your not, your saying the same thing. I hate cars.

Nice one. I’ll go make a cuppa. I’m intrigued now as there is nothing else it can be other that the distance from outside of disc to where it touches the spacer has got to be different

The discs are genuine MTEC from MTEC so can’t see why they wouldn’t be the correct ones though?

Yep I’ve just noticed that aswell and looking on the rear of the disc it looks like this. I’ve just checked the other side as I thought the noise was only coming from rear left and can see the same marks. You reckon I’ve been sent the wrong rear discs or something stupid?

Ok. Well that is the way I had it on originally as it is catching on the back of the disc. When I turn it round the other way it clears 😂

So in simple terms - as below?

Right, I’m down with the clio now. Disc off I can see a lot more what is going on as below images. The disc spacer has a concave and flat side to it. I had it in with the concave edge against the hub. This is allowing the disc to sit closer to the top of the nut which has then scored the back...

Brand new discs so I hope not. I’ll have a look later today and see what’s going on.

I’ll inspect a bit further tomorrow and get the hub nut off so I can get behind and see what’s going on. It’s definitely something to do with the first picture as there was a lot of swarf about. Is that the head of a bolt what I have circled?