02-11-2022, 05:57 AM | #1 |
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M2 CS roof defect
Hi guys,
My friend just noticed there is a problem with the cf hood. I am not sure how to describe it but it just have white spots. I search the forum and found some weave issue, but not similar to my friend’s. I just want to see if anyone experienced or seen this issue. https://flic.kr/p/2n35NDj https://flic.kr/p/2n2WzDV If you guys know anything about this, please let me know. Thank you. |
02-11-2022, 07:14 AM | #3 |
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Could it be light hitting the texture of the top layer differently. Perhaps some irregularity on how it was laid?
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02-11-2022, 07:59 AM | #5 |
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Pictures aren't clear but could be a chemical residue from some kind of a wash that's been baked on in the sun?
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02-11-2022, 09:29 AM | #6 |
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Hi all, my friend doesn’t drive the car that much. It only has about 1000km since he bought it and always garaged.BMW is willing to replace the roof, but just the local shops in Macau aren’t that good in this particular job. I am worry it will have more problems after replacing it here.
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02-11-2022, 09:55 AM | #7 |
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Automated washes won't do this. There's a factory defect. Should be covered under warranty.
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02-12-2022, 06:54 AM | #10 |
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Hard to tell the cause from those pictures, but it seems odd that those spots would just appear on their own if it's a defect. Hopefully they are able to fix the issue without replacement.
Last roof issue reported was different but seemed to take a long time to get the replacement roof installed. |
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02-12-2022, 03:27 PM | #11 |
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Definitely looks like a chemical-related issue not a structural one with the roof. Regardless of what is said, if the owner is very confident in how the car had been treated since acquired I'd be asking the dealer what happened during pre-delivery.
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02-13-2022, 10:14 PM | #12 |
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That image reminds me of the dodgy paint on 90s cars when left in the sun. Problem with top protective coatings.
At least it’s probably not structural and BMW has agreed to fix it….? |
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02-15-2022, 10:11 AM | #13 |
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Oh man... that looks a lot like the clear coat failing on the garbage ebay CF mirror caps I had on my E92 back in the day. I really hope it isn't, because then we all have a problem.
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02-15-2022, 10:47 AM | #14 |
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Only way to fix that is replacing the entire roof panel since it's a structural part. You can't just respray it without removing the panel because you have to bake the resin/clear combo on.
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02-15-2022, 09:28 PM | #15 |
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Same Problem Beginning Here
Hadn't noticed anything (the car's a daily and not garaged - pretty dirty through the recent winter weather), but got my car back from my PPF installer this week. He did the annual touch-up and showed me where the same CF delamination - or whatever it is - is happening on the front-driver and rear-driver side of the roof (pics below). Not as big an area as the OP's images show, but very ominous and I'll be watching it like a hawk. Pretty certain it started during/since December - I would have noticed it in the Fall cleaning the car.
Taking the car in for 10K service soon and will begin the dialogue and fair warning with BMW. Would really like to avoid a roof replacement as I fear that could lead to problems every bit as onerous as this CF issue, but it all depends whether it is heading towards structural failure or is in essence only a cosmetic issue. Fun times. As always, comments are appreciated. |
02-16-2022, 01:29 AM | #16 |
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Could be wrong, but OPs defects seem to be near the places that the roof has bulges or flexible spots? If the clear is not compromised on top then it is obviously a factory defect.
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02-16-2022, 08:01 AM | #17 | |
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Quote:
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02-16-2022, 08:21 AM | #18 |
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Yeah, looks like a separation due to stress in the lamination in those new pics. Rather concerning.
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02-16-2022, 08:53 AM | #19 | |
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The value of these cars will be affected if it is discovered that the construction of the roof leads to this condition. If it is a flaw in overall manufacturing design it might not really present itself until we are out of warranty. Even if it is only aesthetic, it would be a deal breaker for me.
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02-16-2022, 09:10 PM | #22 |
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BMW had these issues on the E92 with the cf roof. A small, but still significant number of people had this pop up, though much further down the road. But it seems they've not figured it out quite yet. I wouldn't fear a roof replacement done at BMW, and I also don't think its very repairable. Maybe bandaid-able but the only "Cant tell it was there" solution is a replacement afaik. Had a buddy fight this issue on his E92. I think his best guess was just UV damage to the carbon and clear
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