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E90/E91/E92/E93 (2006 - 2013)
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  #251  
Old 11-02-2007, 04:52 AM
alito alito is offline
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BMW customer service e-mailed me and stated that since they have no answer they are closing my file. That the service center would call me if they had a solution. Nice way for a company to back up their product and most of all treat their customers. I have no complaints at all about my dealership Reeves for they are trying to figure it out and when I call then, I always get a return call from the service manager. BMW NA is however the worst customer service I have ever dealt with and was basically told to go f$@! myself. Anyone researching on buying a BMW should know that is how they treat their customers.
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  #252  
Old 11-06-2007, 06:52 AM
alito alito is offline
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wow, everyone got quiet after I told you about customer service's response... we need to let everyone know how they act. As I stated numerous times, my dealer is great however I am very dissapointed in the lack of communication with BWN-NA and its customers. I did not get any imput. All I wanted to hear is that Germany knew and they are actively looking at it or hey, here is a free T-shirt for your trouble or ANYTHING other that ooohhh well you are being a pain so we are closing your case response... nobody from BMW has even called to see if my service was OK... You know, you go to a nice restaurant so the food and service are better, you buy nice clothes because they last longer and fit better and you buy a BMW because it is supposed to be better quality, better design and (specially since their advertizing so strongly tells you about their great warranty) better service. It is easy to cover everything when you do nothing. Whomever gets a response from BMW or a solution post ASAP this is drving me bananas and the noise is only getting louder.
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  #253  
Old 11-06-2007, 11:06 AM
schoold doc schoold doc is offline
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sorry to hear that...... if the noise is getting louder, something must be 'loosening' ??? Mine is consistent. i dont know the answer. My middle panel sits a little higher than the front, seems this could cause a disruption in air flow. what if its something other than the top?? one side of the top that meets the 'A' pilar, the rubber piece that meets the closing roof, is shorter than the other side so there is a gap. the other side meshes perfectly. so many possibilites
when i spoke to the guy at bmw it asked him if he had ever been a four door car and the back window was the only window down and that sound is similar. He said he had never been in that situation.. Hard to beleive huh? i think they want to deny it and hope it goes away.
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  #254  
Old 11-07-2007, 05:25 AM
alito alito is offline
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Originally Posted by schoold doc View Post
sorry to hear that...... if the noise is getting louder, something must be 'loosening' ??? Mine is consistent. i dont know the answer. My middle panel sits a little higher than the front, seems this could cause a disruption in air flow. what if its something other than the top?? one side of the top that meets the 'A' pilar, the rubber piece that meets the closing roof, is shorter than the other side so there is a gap. the other side meshes perfectly. so many possibilites
when i spoke to the guy at bmw it asked him if he had ever been a four door car and the back window was the only window down and that sound is similar. He said he had never been in that situation.. Hard to beleive huh? i think they want to deny it and hope it goes away.
I agree w/ you. I think BMW is hoping it goes away since they know most of us really love the car otherwise. Guess what ? I am not going away.
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  #255  
Old 11-07-2007, 05:29 PM
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I plan to check back with one of the local dealers who has so far been very cooperative about reporting this up the chain to BMW. I will post if I get any definitive information.
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  #256  
Old 11-07-2007, 05:51 PM
alito alito is offline
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I plan to check back with one of the local dealers who has so far been very cooperative about reporting this up the chain to BMW. I will post if I get any definitive information.
Thanks. My dealer has been cooperative and extremely helpful but I think BMW-NA / Germany has not been informing them either so they have bnothing to tell me.
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  #257  
Old 11-08-2007, 12:47 PM
nowr2go nowr2go is offline
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Fluttering Noise

I too have the noise. I noticed it the second day I had my hardtop, usually anywhere around 45mph to 60mph. I had the non-sport wheels and upgraded to the 335i sport wheels at 1,200 miles and the noise did not go away. It almost sounds like a harmonic imbalance to the point it annoyrs your ear drums if that makes any sense. I have 8,000 miles and I still notice the noise at the same levels they were when the car was brand new.

If anyone has an update, please post. THX.
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  #258  
Old 11-08-2007, 02:38 PM
335i4Louie 335i4Louie is offline
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Anyone tested the "Fluttering" noise in this way?

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Name:	smogcheck01.JPG
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Just wonder if anyone has tested the "Fluttering" noise on this kind platform? I got this idea when I was doing a smog check recently. My vert is going to be here in two weeks. It seems i have a bunch of things need to check, i.e. roof leak, fluttering noise, and window motor....
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  #259  
Old 11-08-2007, 03:49 PM
alito alito is offline
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Originally Posted by 335i4Louie View Post
Attachment 126713

Just wonder if anyone has tested the "Fluttering" noise on this kind platform? I got this idea when I was doing a smog check recently. My vert is going to be here in two weeks. It seems i have a bunch of things need to check, i.e. roof leak, fluttering noise, and window motor....
I did think of putting the car in a DINO which is a stationary platform that allows the car to go at 60-80mph but without wind noise influence since it is stationary. This makes sense and I and I am "sure" BMW is doing this as we speak no ....? The problem is most of the platforms make a great deal of noise and it is only the rear wheels that move. It is a great idea. Test it if you can and let us know... make sure it is accelerated slowly, at 57 mph is the peak noise and it is maintained there with the WINDOWS UP. Great idea !! Thanks
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  #260  
Old 11-08-2007, 05:27 PM
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Buffeting sound

If the noise is caused by wind or air pressure, the car would need to be placed in a wind tunnel. If it is a drivetrain issue, a dyno might be able to reproduce it but I doubt it since the noise of the tires on the dyno Hopefully BMW has some top notch engineers working on this issue.

Earlier I thought the noise was a drivetrain issue but I am now leaning toward an aerodynamic issue with the design of the roof panels or a breach in the integrity of the roof that is allowing air to enter the cabin at speed. I am perplexed that the noise starts at about 55 mph and stops at around 65 mph. This is strange.
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  #261  
Old 11-08-2007, 06:30 PM
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Is there a vent/flap or anything that anyone knows that happens at those speeds... something programed or designed to happen? I figured the dyno had no wind therefore could help rule out the aerodynamic component but you are right the tire noise can be bad but then again most cars are driven on the dyno for peak bhp/torque measures and that is definitely a factor in their noise. I think if someone has access to a dyno it may be worth the try.
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  #262  
Old 11-09-2007, 09:55 AM
schoold doc schoold doc is offline
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On my roof the middle panel sits higher than the front one by a slight margin. Is this true for Yours??? Maybe the quiet cars the center panels sits lower than the front thus no disruption in air flow? Please check and report.. just another effort to elimate a possiblity. thanks
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  #263  
Old 11-09-2007, 10:16 AM
alito alito is offline
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Originally Posted by schoold doc View Post
On my roof the middle panel sits higher than the front one by a slight margin. Is this true for Yours??? Maybe the quiet cars the center panels sits lower than the front thus no disruption in air flow? Please check and report.. just another effort to elimate a possiblity. thanks
I tried taping it and made no difference. Has anyone tried the tape as I posted previously pictures? It seemed, although I don't know if I was just being hopeful, to have made a difference. Look back and try it...
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  #264  
Old 11-10-2007, 12:56 PM
schoold doc schoold doc is offline
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More info.........I drove my car early this morning, 52 degrees first time I drove the car at this temp. I noticed the noooooooooise so much worse than ever!!! Why more when cold??? Has anyonelse ntoiced this???? I live so cal. so it usually warm. But this was truly annoying??
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  #265  
Old 11-10-2007, 01:13 PM
iwanna330cic iwanna330cic is offline
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Originally Posted by schoold doc View Post
Why more when cold???
The cold temp has caused whatever is causing this to shrink ever so slightly (cold = contraction; heat = expansion). That would leave me to believe the noise is louder because there is relatively more space between the joints in the area that is causing this sound. Just my guess. If the noise becomes less apparant after the car has been in the warmth for a while, I would say that's the answer

Doug
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  #266  
Old 11-10-2007, 01:25 PM
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Evidence is pointing more and more toward leakage of air into the roof panels probably between the outer layer and the inner headliner. This sets up a "vibration" that is heard inside the cabin. Why it only happens between 55 and 65 mph is still very strange but mine pretty much disappears at speeds above about 65. It's most evident right around 60. Hopefully BMW can redesign the seals to eliminate the issue otherwise I guess we either live with it or try to return our cars under the lemon law but I am doubtful that this will be upheld in our favor. Any attorneys out there with an E93 having this problem? We might need one.
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  #267  
Old 11-10-2007, 01:39 PM
alito alito is offline
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Originally Posted by rmorin49 View Post
Evidence is pointing more and more toward leakage of air into the roof panels probably between the outer layer and the inner headliner. This sets up a "vibration" that is heard inside the cabin. Why it only happens between 55 and 65 mph is still very strange but mine pretty much disappears at speeds above about 65. It's most evident right around 60. Hopefully BMW can redesign the seals to eliminate the issue otherwise I guess we either live with it or try to return our cars under the lemon law but I am doubtful that this will be upheld in our favor. Any attorneys out there with an E93 having this problem? We might need one.
Please try the tape around the rear windows as I posted before. My dealer taped every crevice and they truly believe it to the the inner part of the rear windows towards the bottom. When I drove around for a while with the windows taped (painters non residue tape) it did seem to help. I did notice the sound but it did seem less prominent with the tape. I'll try to find the page that I posted the picture. Everyone was scared of the tape damage and residue but trust me I had mine on for 3 days in 90F degrees and no residue. I do agree that the sound is much worse when cold. Do not forget tires also have less pressure when cold... but I do agree cold = more noise.
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  #268  
Old 11-10-2007, 08:58 PM
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I have been reading this thread since I ordered a MY08 (Sept 07 build) E93 on August 1st. Reading the posts had me a bit nervous about the car. I took delivery about 3 weeks ago, have driven the car about 1000 miles and have NOT heard any fluttering type noise. My car is a 335 with Sport, Premium, Cold Weather, Automatic, Paddle, Comfort Access, and Active Steering. The car is stock. I did not install the alarm but did have Lojack installed.

I figured I'd post just in case a pattern can be determined by identifying cars that do not have the problem. I hope you guys with the problem get it figured out and fixed ASAP because without the noise, the car is a blast to drive.

AB
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  #269  
Old 11-10-2007, 11:18 PM
spoolin spec v spoolin spec v is offline
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I have a 2007 335i convertible with the sports package and from 40-70 mph it makes a fluttering noise. It almost sounds like if you left a sunroof open with all the windows closed. I have opened, closed windows and tried every speed and cannot figure out what it is. It is NOT an out of round tire nor tire noise. Has anyone noticed this ? And yes, of course the dealership "cannot reproduce problem" when even my mother noticed and she knows about cars as little as anyone can. Any imput?
edit:

never mind
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  #270  
Old 11-11-2007, 04:06 AM
alito alito is offline
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edit:

never mind
what?
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  #271  
Old 11-11-2007, 07:49 AM
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I've been reading this thread with interest because I pick up my 335i vert on Thursday. One question I've not seen asked is does anyone with a 328i vert have the same issue, or is this only a 335 issue? If it were aerodynamics you'd expect that the 328 would have the same issue, correct?

Thanks !!
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  #272  
Old 11-11-2007, 04:04 PM
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see post below.
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  #273  
Old 11-11-2007, 04:04 PM
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I've been reading this thread with interest because I pick up my 335i vert on Thursday. One question I've not seen asked is does anyone with a 328i vert have the same issue, or is this only a 335 issue? If it were aerodynamics you'd expect that the 328 would have the same issue, correct?

Thanks !!
If this is not the case, then we are back to suspecting a drivetrain issue.
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  #274  
Old 11-11-2007, 08:46 PM
alito alito is offline
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Anyone out there with a 328 WITH the noise... that would be interesting...... please speak because that would help. Good catch
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  #275  
Old 11-12-2007, 04:25 PM
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I've just posted a request for information on the "other 3 series board". Hoping to get some additional data on this issue, maybe from someone who has actually had the problem diagnosed AND solved.
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