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BMW M2 Forum > BMW M2 CS Model > BMW M2 CS CFRP roof weave issues: "Garching, we have a problem" ?

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      10-13-2020, 11:11 AM   #23
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Quote:
Originally Posted by Artemis View Post
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Originally Posted by VisualEcho View Post
As long as it doesn't crack or peel like the older ones.
This one on a 2015 F80 M3 didn't age well:
Quote:
Originally Posted by dd1eye View Post
This is what my 2015 M3's carbon fiber roof looks like. It started peeling at around the 3.5 year mark. I have taken it to multiple BMW service centers but BMW refuses to fix it even though it was under warranty. They say the reason for the peeling is rocks hitting the car even thought it is peeling in the middle and the back of the roof. For the first 3 years I drove the same road and if there rocks hitting the roof why didn't it start peeling sooner.



Has anyone had similar issues with the CB roof?

Attachment 2436840
This is part of the reason that I covered my entire roof in Xpel on my '16 M4 when I sold the car in 2019 it still looked perfect.
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      10-13-2020, 11:13 AM   #24
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I'll trade someone my M2c HS roof for your imperfect CS roof. Takers??
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      10-13-2020, 11:16 AM   #25
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Originally Posted by ASAP View Post
I would say for the price this is unacceptable... but seeing how this is a new weave, it doesn't surprise me... what would get me are cracks... a friends F80 started developing cracks after 4 years... FYI - no one can fix CF correctly... and how do you replace it?
Over on the e9X m3 boards some people have had this issue, or yellowing. Apparently it's not that difficult to fix if a body shop knows what they are doing with carbon, but most shops won't touch it because they don't have any experience with it. There are example in that part of the forum of it being fixed and looking perfect. The only body shops willing to do it right for you could be very far away, and that would suck.
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      10-13-2020, 11:16 AM   #26
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Embarrassing, especially for the money.
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      10-13-2020, 11:16 AM   #27
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Quote:
Originally Posted by 1bmwaddict View Post
Thats why you dont buy the first batch!
The batch is irrelevant. CF roofs have always had issues.
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      10-13-2020, 11:18 AM   #28
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Is this something that ppf helps prevent? Is it mostly UV damage?

Edit: not the CS issue, but issue with carbon roof in general.
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      10-13-2020, 11:19 AM   #29
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Quote:
Originally Posted by Sedan_Clan View Post
Quote:
Originally Posted by 1bmwaddict View Post
Thats why you dont buy the first batch!
The batch is irrelevant. CF roofs have always had issues.
Thanks for accepting my opinion
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      10-13-2020, 11:19 AM   #30
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too bad we won't ever see this pattern from BMW again, I think it looks really cool.
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      10-13-2020, 11:20 AM   #31
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Quote:
Originally Posted by medphysdave View Post
Is this something that ppf helps prevent? Is it mostly UV damage?
PPF won't help with UV issues. if it did any panel with it would look different than panels without it over time.
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      10-13-2020, 11:22 AM   #32
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Quote:
Originally Posted by 1bmwaddict View Post
Quote:
Originally Posted by Sedan_Clan View Post
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Originally Posted by 1bmwaddict View Post
Thats why you dont buy the first batch!
The batch is irrelevant. CF roofs have always had issues.
Thanks for accepting my opinion
What good is the opinion if there's no factual support behind it? It's baseless. We know that build has little to do with the roof issues. Some old cars never experienced issues at all while newer cars did. Some cars that spent their lives outdoors didn't crack or yellow. Some garage queens experienced issues within the first 6 months. There was never any rhyme or reason to why some roofs cracked, peeled or yellowed. This has been an issue ever since the E9X. The roof defect was hit or miss, just like the cracking radio buttons in the F-Series or the peeling steering wheels.
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      10-13-2020, 11:25 AM   #33
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Quote:
Originally Posted by JustChris View Post
Not good, I wish owners well in resolving if they have issues.....but I will say this.

Fair play to Bimmerpost for not hiding this and making it front page.
Agreed, this is a bold post and demonstrates the support the forum has for the members. This should also help owners down the road if documentation is needed to support that BMW was aware of the issue and being a factory defect.
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      10-13-2020, 11:46 AM   #34
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Quote:
Originally Posted by medphysdave View Post
Agreed, this is a bold post and demonstrates the support the forum has for the members. This should also help owners down the road if documentation is needed to support that BMW was aware of the issue and being a factory defect.
It is good to not be hiding the issue, however I'm curious to see how many customer cars are seeing this. It seems so far to be mostly isolated to press cars.
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      10-13-2020, 11:48 AM   #35
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Unfortunate and embarrassing, but not a deal breaker.

Is 1x1 supposed to be more rigid than 2x2?
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      10-13-2020, 11:51 AM   #36
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It's worth noting that the e46 M3 CSL carbon fibre roof never had any issues - at least none that I ever heard of - and that car is almost 20 years old. So did cf quality go down the drain over the years? - One would assume it should be the opposite.
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      10-13-2020, 11:54 AM   #37
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My roof is perfect. Build date August.
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      10-13-2020, 12:50 PM   #38
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So maybe the lesson learned here for all people with CF roofs is to wrap it. Clear vinyl for M3/4 and smoked version for M2 CS to reduce the visible imperfections.

It’s annoying on the M2, but I wouldn’t let that stop me from buying the car.
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      10-13-2020, 01:18 PM   #39
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Some of these look like they could be some kind of environmental damage, maybe prolonged exposure to something?
I was 100% sure the OP was from Florida for some reason. Miami.... I was right. Garage store it.

https://f80.bimmerpost.com/forums/sh...4#post24675874
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      10-13-2020, 01:21 PM   #40
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painted carbon panels have tons of imperfections in them but they are painted over. it's typically a steep upcharge to get your carbon options unpainted for the very reason is they have to try harder to make them blemish free.

if it is indeed press cars or "preproduction" models then perhaps they just "got a roof on the car" or maybe the original plan was a painted carbon roof.....or maybe they figured out a better process later in production.

or maybe it's too early to tell. I'll definitely be spending several hours in the sun with a magnifying glass inspecting my roof when it comes in.
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      10-13-2020, 02:08 PM   #41
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Quote:
Originally Posted by deceptiv.M3 View Post
Quote:
Originally Posted by medphysdave View Post
If my M2CS has any roof defects I'll certainly have a conversation with BMW USA. We don't really have the option to have another car built, or have the roof replaced. Hopefully no one is seeing this on the non press cars.
You could look at it two ways, I'd prefer glass half full and that if this ends up being the only bmw with this pattern- pretty rare, defects and all
Yea, I see the glass half full also, with a moonroof

When I get a F1 car, then I'll omit the moonroof for actual, meaningful, "weight reduction," than pay 85k for a half-baked, defective design..

But that's just me.. 🤷🏻
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      10-13-2020, 03:03 PM   #42
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Quote:
Originally Posted by medphysdave View Post
If my M2CS has any roof defects I'll certainly have a conversation with BMW USA. We don't really have the option to have another car built, or have the roof replaced. Hopefully no one is seeing this on the non press cars.
Roof replacement is so easy.
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      10-13-2020, 03:58 PM   #43
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Quote:
Originally Posted by e92ben View Post
Quote:
Originally Posted by medphysdave View Post
If my M2CS has any roof defects I'll certainly have a conversation with BMW USA. We don't really have the option to have another car built, or have the roof replaced. Hopefully no one is seeing this on the non press cars.
Roof replacement is so easy.
Hm, not for the M2 CS.

It is not like the other carbon roofs
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      10-13-2020, 04:20 PM   #44
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Quote:
Originally Posted by AUSf22 View Post
Quote:
Originally Posted by e92ben View Post
Quote:
Originally Posted by medphysdave View Post
If my M2CS has any roof defects I'll certainly have a conversation with BMW USA. We don't really have the option to have another car built, or have the roof replaced. Hopefully no one is seeing this on the non press cars.
Roof replacement is so easy.
Hm, not for the M2 CS.

It is not like the other carbon roofs
I'm pretty sure IND can source them from bmw. If you have an issue with them they are easily replaced. Bmwna would forsure do it.
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