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F30 / F31 / F32 / F33 (2012 - current)
The sixth generation 3 series, chassis code F30. 2013 model year 328i and 335i sedans now in production. Read the F30 frequently asked question thread for all your basic question and dive into all the details in the ultimate F30 information thread.

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  #26  
Old 04-22-2013, 12:51 PM
Honker Honker is offline
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Not at all creaking. Very dull, hollow, thud like. Only on sharp bumps & cracks.
Yep.
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  #27  
Old 04-25-2013, 10:31 AM
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Clunking in rear

Drove another Sport Line at the dealer today. Made the same noise. The QC guy heard the noise too. Unfortunately, no source of the noise, and no fix available for it.


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  #28  
Old 04-25-2013, 10:41 AM
Honker Honker is offline
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Perhaps it is a design feature to let you know that the suspension system is active.
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  #29  
Old 04-25-2013, 10:59 AM
pilac pilac is offline
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Clinking

BONJOUR,

Don't give up. It is unaccptable to have such knocking in a a 50000$+ car. Ask the sevice manager to contact BMW for a solution. We are ten at the same dealership with that probllem and no answer yet from BMW.
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  #30  
Old 04-25-2013, 11:45 AM
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furby076 furby076 is offline
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I am very hesitant to post this because I think it might be a bit premature...but I'm trying to figure it out to no avail.

While driving in town, over small bumps in the road, I keep hearing this slight clunking sounds from the rear...possibly trunk, rear seats...not sure. Everything seems secure, rear seats are locked down, truck has no play...nothing obvious as to what could cause the noise. It only happens in town, the car as as smooth as silk on the highway.
I never noticed this before with the loaner F30's I have had, but they were not Sport Line (if that makes a difference). Anyhow, if anyone has experienced this, please let me know.
Did you secure the body?
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I agree with furby
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Hahahaha, I like you furb, you like to live dangerously.
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I started to google to find a picture to match furby's suggestion to Gia, but it quickly became clear it was an inappropriate search to conduct at work.
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  #31  
Old 04-25-2013, 02:48 PM
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Clunking in rear

Secure the body?


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  #32  
Old 04-25-2013, 06:01 PM
pilac pilac is offline
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What do you mean by secure the body?

Thanks.
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  #33  
Old 04-25-2013, 07:17 PM
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Secure the body?


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Originally Posted by pilac View Post
What do you mean by secure the body?

Thanks.
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I agree with furby
Quote:
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Hahahaha, I like you furb, you like to live dangerously.
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I started to google to find a picture to match furby's suggestion to Gia, but it quickly became clear it was an inappropriate search to conduct at work.
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  #34  
Old 04-25-2013, 08:43 PM
HokieXDriver HokieXDriver is offline
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Love the Cyrillic rendition of Soprano on the bumper sticker!
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  #35  
Old 04-26-2013, 01:31 PM
33andathird 33andathird is offline
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I am glad to know I am not totally crazy. I have heard a similar thud (also have the Sport package) at first I thought my shocks were gone in the back, which seems impossible on a car with 8,000 kms on it. I have resigned my thinking to the run-flats as the cause of the noise. I will be watching this post to see if it turns out to be anything different.
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  #36  
Old 04-30-2013, 08:29 AM
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I have a theory as to where that noise is coming from. Nothing is loose, and nothing is actually clunking. What I believe is happening is that the rear panel right behind a passengers head (usually where rear speakers go on lots of cars) is hollow and thats what makes that cavernous clunk sound. I will be trying to stuff some insulation like foam or cloths of some kind to see if that helps.

As you will also find, the trunk area including that rear area I just mentioned are all made of a material that echos sounds very badly. It's all very hollow and cave like when it is bumped. That's what I believe is causing the sound considering it only makes that sound when going over a sharp bump, not speed bumps etc.

We'll see.
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  #37  
Old 05-01-2013, 10:06 PM
Ken335i Ken335i is offline
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2012 335 Sport- no sound issues since tightening the glove box screws.
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  #38  
Old 05-02-2013, 07:17 AM
PK2348 PK2348 is offline
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Quote:
Originally Posted by Nick9597 View Post
I have a theory as to where that noise is coming from. Nothing is loose, and nothing is actually clunking. What I believe is happening is that the rear panel right behind a passengers head (usually where rear speakers go on lots of cars) is hollow and thats what makes that cavernous clunk sound. I will be trying to stuff some insulation like foam or cloths of some kind to see if that helps.

As you will also find, the trunk area including that rear area I just mentioned are all made of a material that echos sounds very badly. It's all very hollow and cave like when it is bumped. That's what I believe is causing the sound considering it only makes that sound when going over a sharp bump, not speed bumps etc.

We'll see.
The dealer should be able to fix it. I had a rattle in the center console at certain RPMs. I brought it back for them to look at, not hoping much could have been done. They kept the car for 2 days, ended up partially removing exhaust and transmission but found the source of the noise and fixed it. I have the write up of what was done to the car, it's like they took half of the car apart. It is totally quiet now though.

Be nice but firm and insist that they correct this
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  #39  
Old 05-02-2013, 08:08 AM
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The dealer should be able to fix it. I had a rattle in the center console at certain RPMs. I brought it back for them to look at, not hoping much could have been done. They kept the car for 2 days, ended up partially removing exhaust and transmission but found the source of the noise and fixed it. I have the write up of what was done to the car, it's like they took half of the car apart. It is totally quiet now though.

Be nice but firm and insist that they correct this
Thanks PK. I will say that it's not a rattle, but something more clunky and not exactly easy to describe. All I know is it makes the same noise on another sport line I drove. It's in the trunk area and in that rear thing behind the rear passengers heads. If you look in your trunk up at that area where the seat latches are, you will see that it is hollow and made of cheap materials. Trunk materials are cheap as well, but not sure if it's the trunk. My money is its in that seat latch area that's hollow.

(Only makes the noise on sharp bumps. Unfortunately at the dealership (45 miles from me) their roads are as smooth as glass so duplicating the problem is difficult.

I've never been so disappointed in a car. The new car excitement lasted all but a day. I would turn it in if I could. I don't want spend the next three years hating my car.
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Last edited by Nick9597; 05-02-2013 at 08:10 AM.
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  #40  
Old 05-09-2013, 07:09 AM
33andathird 33andathird is offline
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A thought on this clunking. Is your trunk empty?

I recently put the clubs in the trunk now that the weather has gotten nicer and I haven't noticed the sound as I did before. I suspect it may be the trunk floor bouncing up and down when you go over bumps. It isn't very heavy and it could be the culprit, because when I carry around stufff that is heavy enough to hold it down I don't hear the noise.

Just a thought. Do you still hear the sound when the trunk has stuff in it?

Cheers.
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  #41  
Old 05-09-2013, 07:20 AM
LegendsNeverDie LegendsNeverDie is offline
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I have the same issue however I have the E90 328 so I am not sure if its related. I only hear it during very low speeds.
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  #42  
Old 05-09-2013, 01:41 PM
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Clunking in rear

33rd, I tried driving without that lid in the trunk and the car made the same noise.

I think I'm going to start ripping everything out of the rear of the car one item at a time and take a drive to try to narrow it down. Maybe it's my roads, but driving over bumps in the road is making driving my car a big bummer.

I've never been so disappointed in a car. (If I was deaf, problem would be solved)


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  #43  
Old 05-09-2013, 06:09 PM
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krash krash is offline
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33rd, I tried driving without that lid in the trunk and the car made the same noise.

I think I'm going to start ripping everything out of the rear of the car one item at a time and take a drive to try to narrow it down. Maybe it's my roads, but driving over bumps in the road is making driving my car a big bummer.

I've never been so disappointed in a car. (If I was deaf, problem would be solved)


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I can honestly say that I never hear any clunking sound and I have a sport model. Is it xDrive models?
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  #44  
Old 05-10-2013, 07:59 AM
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Nick9597 Nick9597 is offline
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Clunking in rear

Krash. It all has to do with how smooth your roads are. If you have smooth roads, you won't hear a thing. You need old choppy, torn up roads like I do, to hear it.


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  #45  
Old 05-10-2013, 06:14 PM
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krash krash is offline
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Krash. It all has to do with how smooth your roads are. If you have smooth roads, you won't hear a thing. You need old choppy, torn up roads like I do, to hear it.


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I live in PA. Extreme weather kills the roads around here. Snow, ice and freezing weather in the winter. 90+ degree summers.

I wonder if it's because I set the suspension to comfort mode on old choppy, torn up roads. Do you have DHP?
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  #46  
Old 05-11-2013, 07:13 AM
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Nick9597 Nick9597 is offline
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Clunking in rear

Krash. No DHP.

I spent 4 hours yesterday tearing apart the trunk area of my car trying to locate that noise. The only thing I could conclude is that a combination of my tires and the cheap quality trunk material is causing the noise. If you were to open your trunk and knock on the material (inside of the lid, side walls and floor of the trunk) in the same manner that you knock on a door, you will see what I mean. I believe my tires, although great performing tires on the highway, are so hard that over sharp bumps, it causes those materials to echo very loudly.

Only options at this point are to get some new tires (spoke to Sonny at TireRack.com) or if that doesn't solve the problem give the car back and get something else. I refuse to drive this car making this noise for the next three years.


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Last edited by Nick9597; 05-11-2013 at 07:17 AM.
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  #47  
Old 06-21-2014, 10:12 AM
plebian plebian is offline
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Bump- any update on this? My car is making this exact same noise. It's coming from the rear passenger side when I go over bumps, and sometimes it sounds like whatever is loose is moving from side to side.
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  #48  
Old 06-21-2014, 11:00 AM
Ken335i Ken335i is offline
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2012 335 Sport- no sound issues since tightening the glove box screws.
I take this back. A noise of a loose screw, or fastener of some kind, rolling around under the center console started about a month ago. I would hear it under hard braking and cornering. Had the deal check it out during routine service and they said they did find a screw. However, there may have been two of them because I can get the same noise, however less frequently. Did they really find and remove the loose screw? Don't know, but they will be seeing my car again soon.
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  #49  
Old 06-21-2014, 02:41 PM
Jim Cash Jim Cash is offline
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I had a similar "thunk" sound on bumps. And it also "seemed" to be on the rear passenger side - but noises are very difficult to trace especially when you are facing forward in the driver's seat.

I do not know if I have solved it or not, but after doing something to the under body panels that I thought needed doing I have not noticed that thunk.

What I noticed was that the plastic under floor panels that are below the rear seat area are very well supported - expcet for the inboard side (nearest the drive shaft)

That is a long side and totally unsupported - so with your hand it is easy to push it upward (about 1 inch) to have it contact the body floor. I thought it "might" be possibel that this was flexing enough on bumps to hit the floor.

I fashoned a small block of styrofome that just fit between the panel and the floor and then secured it in place with some butul rubber (adhesive that can also be easily pulled off - same as is used to secure the innter door panel seals) .

That provides support for that area of the panel so it can not flex up and down.

This may well NOT be the fix - but as I say, I thought that pannel needed support, and I have not heard the sound since.

Cheers
Jim Cash
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  #50  
Old 06-23-2014, 10:14 PM
plebian plebian is offline
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Originally Posted by Jim Cash View Post
I had a similar "thunk" sound on bumps. And it also "seemed" to be on the rear passenger side - but noises are very difficult to trace especially when you are facing forward in the driver's seat.

I do not know if I have solved it or not, but after doing something to the under body panels that I thought needed doing I have not noticed that thunk.

What I noticed was that the plastic under floor panels that are below the rear seat area are very well supported - expcet for the inboard side (nearest the drive shaft)

That is a long side and totally unsupported - so with your hand it is easy to push it upward (about 1 inch) to have it contact the body floor. I thought it "might" be possibel that this was flexing enough on bumps to hit the floor.

I fashoned a small block of styrofome that just fit between the panel and the floor and then secured it in place with some butul rubber (adhesive that can also be easily pulled off - same as is used to secure the innter door panel seals) .

That provides support for that area of the panel so it can not flex up and down.

This may well NOT be the fix - but as I say, I thought that pannel needed support, and I have not heard the sound since.

Cheers
Jim Cash
Wow interesting. I'd love to try this. I'm a little confused on how you got to the area you discuss above. Are you talking about the area under the rear seat bench? Any tips for me on how to get this off or maybe a link to a diagram if you used one? Thanks!
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