Horrendous metallic screaching noise

[Argyll Andy]

Now I'm really pissed off. It's happened again; second time within two weeks. WTF is this all about. I'm not going to drive it around back and forth in forward and reverse trying to dislodge the stone and hope nothing gets damaged so I have called BMW assist who are coming out to sort out but I need a solution to stop this happening.

Let's see where this goes.......... :x

Unfortunately I’d imagine you’ll get as far as anyone else who’s raised this problem………….. nowhere :tumbleweed:

I had it quite a few times on the NC500 but the road surface wasn’t great in parts. If it becomes a regular issue I’ll be either bending the guards back or removing them with a method of reattachment if it needs to go into BMW for anything.

I’ve raised it before (on the other thread I think) there doesn’t appear to be reports of the same issue on the Toyotas so I was thinking about using their part also if it because a thing

 

[KrusteKlubba]

As you have checked the underside, probably not this….

Thought I’d blown a tyre at low speed in an Audi. Awful scraping, dragging noise. Got out, to my surprise, the tyres were ok. Looked as best I could, nothing underneath. Pulled out again and the noise changed and eventually stopped. Got home in better light and took another look. Found a what turned out to be a 250mm metal strip poking out of the plastic under tray. Looked like something that would hold a ladder on a van roof rack. Really annoyed about it. Didn’t see this shiny silver bar on the road but going back over dashcam footage, there it was near the side of the road.

Concerned this might have safety implications, took it to a local garage but nothing else damaged. Phew!!!!

 

[r2uzenblot]

Happened for the third time to me so it's a formal letter going off to BMW. Can't keep going on like this........ :x

 

[Pondrew]

Happened for the third time to me so it's a formal letter going off to BMW. Can't keep going on like this........ :x

They will probably give you an angled 'poker' under warranty.
Maybe write to your MP while you are at it........

 

[john-e89]

May as well write to parliament as BMW on this I'm afraid. Low volume car, limited production run. They won't acknowledge a problem exists, will say they have barely heard of the problem at best, and due to the low volume will do absolutely nothing about it due to R&D costs.

As Argyll Andy says it's a DIY solution.

 

[Pondrew]

May as well write to parliament as BMW on this I'm afraid. Low volume car, limited production run. They won't acknowledge a problem exists, will say they have barely heard of the problem at best, and due to the low volume will do absolutely nothing about it due to R&D costs.

As Argyll Andy says it's a DIY solution.

Aye. They wouldn't do anything about S65 crank hub failures and there were thousands of them. They wouldn't do anything about the 'hot' V8s and melting turbos, they wouldn't do anything about the V10s costing thousands to repair..........the list goes on

A small, thin, tin brake shield hasn't got a cat in hell's chance. :|

 

[Jim S]

If you study the photo below you will see the reason for this problem - poor design of the front MSport brakes heat shield :thumbsdown:

 

[BrianD]

It's happened to me so many times that I have stopped counting and it always seems that stones are flipped behind the shield at low speeds. Luckily, I have only had to call BMW Assist out twice. All other instances I have managed to dislodge the stone as per BMW instructions. It still annoying and embarrassing though when it does happen.

 

[r2uzenblot]

Well things are moving on. BMW told me to take it to my dealer and they said 'We'll book it in and fit a replacement part'. I didn't quiz them on this as I thought that a replacement part under warranty sounded good but after it gets fitted I shall ask them just exactly what they meant by replacement part.....

 

[Jim S]

Well things are moving on. BMW told me to take it to my dealer and they said 'We'll book it in and fit a replacement part'. I didn't quiz them on this as I thought that a replacement part under warranty sounded good but after it gets fitted I shall ask them just exactly what they meant by replacement part.....

Yes, I would be very interested to hear what part they fitted.

 

[MikeyH]

Toyota :rofl:

 

[r2uzenblot]

Here's an update on the stone trapped issue. My car went in to have two new back plates fitted and came out unchanged. Er, that's completely unchanged because they forgot to order the parts....... Well they are going to collect the car from me this week and finally fit them. Then I can quiz them on whether they are different from the current fitted ones.

It could be that there is a fix but will only be done to people who complain. We will see!

 

[ori]

So I had it occur once on my previous g29, but nothing on my current one. Maybe they did change something?

 

[Jim S]

Here's an update on the stone trapped issue. My car went in to have two new back plates fitted and came out unchanged. Er, that's completely unchanged because they forgot to order the parts....... Well they are going to collect the car from me this week and finally fit them. Then I can quiz them on whether they are different from the current fitted ones.

It could be that there is a fix but will only be done to people who complain. We will see!

Are you able to take a photograph when the new parts are fitted? Front view.

 

[r2uzenblot]

Will do if the parts finally arrive and they get fitted (LOL).

 

[Argyll Andy]

So I had it occur once on my previous g29, but nothing on my current one. Maybe they did change something?

Had it 3/4 times on mine Ori

 

[ori]

So I had it occur once on my previous g29, but nothing on my current one. Maybe they did change something?

Had it 3/4 times on mine Ori

Maybe it changed as my car is 6 months younger than yours.
Or I’m just lucky…….although we not that I’m not lucky like that.

 

[Jim S]

Had it happen to me six times. Horrendous screaming noise. :headbang:

 

[r2uzenblot]

Anyway the magic fix has been applied to stop this ever ever happening again. They have fitted two new backing plates at the front.

Now I known the cycnics amongst you may question this but the design is identical to the old ones and the part number has been unchanged BUT of course these are new so will clearly fix the problem. What could possibly be wrong with this?

Well at least I got two new backing plates and to be fair the technician, engineer, driver (whatever you call the mechanic these days) said I know it is a pain but just be careful when you turn left onto rough surfaces. So here in Shropshire that'll be just around 40 times a day then..........

A known fault with no fixes and that's it.

 

[Jim S]

Anyway the magic fix has been applied to stop this ever ever happening again. They have fitted two new backing plates at the front.

Now I known the cycnics amongst you may question this but the design is identical to the old ones and the part number has been unchanged BUT of course these are new so will clearly fix the problem. What could possibly be wrong with this?

Well at least I got two new backing plates and to be fair the technician, engineer, driver (whatever you call the mechanic these days) said I know it is a pain but just be careful when you turn left onto rough surfaces. So here in Shropshire that'll be just around 40 times a day then..........

A known fault with no fixes and that's it.

I spoke to my BMW service manager about this last week and he told me that the part numbers had not changed and that they would most likely replace the heat shields with like for like parts. That’s crazy as it is not likely to fix the problem. :thumbsdown: :headbang: