e92 Coupes Rattle In Back After Exhaust Install?

hl0m4n · 01-07-2008, 01:37 AM

does anyone else have rattling/vibrating noise at low rpm comming from the back after exhaust install? any idea what it is?

e92phreak · 01-07-2008, 01:45 AM

I get the rattle. Try folding down your seats and driving. After I folded them down, I noticed the rattle went away... so for me, it's definitely the rear seats.

Also, the little tray inbetween the rear seats rumble during low RPMs.

What exhaust do you have?

01-07-2008, 02:07 AM

+1 here

funny and awkward, i just have a quart of oil in that middle tray and the rattling stops. i guess you just need something heavy in there lol.

hl0m4n · 01-07-2008, 07:32 AM

i have the full supersprint setup. anyhow i did fold the seats down and brought out the entire seat belt and put back. i haven't had the rattling for awhile now and then all of a sudden today i have it again at low rpms.

i don't think its effect the people with exhaust but also the golf tee people. nobody knows the exact source of the rattle or a definate answer on solution?

G33 · 01-07-2008, 12:22 PM

its the tray in the middle. the flap that slides... just stick a load of bubble wrap in there to keep it pumped up so that the flap cant move - vibrate. i guess that shud work. i havent got round to doing it myself.

hl0m4n · 01-07-2008, 12:28 PM

Quote:

Originally Posted by G33

its the tray in the middle. the flap that slides... just stick a load of bubble wrap in there to keep it pumped up so that the flap cant move - vibrate. i guess that shud work. i havent got round to doing it myself.

how about a tennis ball? that used to solve alot of things on the e46s lol.

G33 · 01-07-2008, 12:38 PM

dunno i aint got a tennis ball to hand

i dont think its deep enough for one to fit in, it might be too large and crack the flap? i need some balls (tennis) so ill have a go when i get them 2moro

Scott B · 01-07-2008, 12:47 PM

I noticed the same rattle (bone stock) and moved the slider in the rear back and forth a few times. It seems to have subsided for now.

It seems to me that this should be a warranty issue. Has anyone approached a dealer about it?

hl0m4n · 01-07-2008, 12:53 PM

Quote:

Originally Posted by Scott B

I noticed the same rattle (bone stock) and moved the slider in the rear back and forth a few times. It seems to have subsided for now.

It seems to me that this should be a warranty issue. Has anyone approached a dealer about it?

what gets to me is with stock exhaust i never had this rattle. so how is it after exhaust install the rattle is there? is it from the extra db?

on cold morning start ups i set my toyota corolla alarm lol and its on the other side of my driveway.

Scott B · 01-07-2008, 12:56 PM

Quote:

Originally Posted by hl0m4n

what gets to me is with stock exhaust i never had this rattle. so how is it after exhaust install the rattle is there? is it from the extra db?

on cold morning start ups i set my toyota corolla alarm lol and its on the other side of my driveway.

Yes. It's the DB. Knowing that you set off alarms with the SS makes me very unlikely to buy it.

hl0m4n · 01-07-2008, 01:04 PM

Quote:

Originally Posted by Scott B

Yes. It's the DB. Knowing that you set off alarms with the SS makes me very unlikely to buy it.

its not a bad thing. on cold start ups the car is loud for only 2 seconds and goes down. its a 02 toyota i use as a get around car for work. my dad's acura rdx makes the car alarm go off on the toyota as well if you press the lock button twice making the confirmation noise lol.

Scott B · 01-07-2008, 01:05 PM

Quote:

Originally Posted by hl0m4n

its not a bad thing. on cold start ups the car is loud for only 2 seconds and goes down. its a 02 toyota i use as a get around car for work. my dad's acura rdx makes the car alarm go off on the toyota as well if you press the lock button twice making the confirmation noise lol.

Did you ever figure out why the SS didn't make any power?

hl0m4n · 01-07-2008, 01:13 PM

Quote:

Originally Posted by Scott B

Did you ever figure out why the SS didn't make any power?

yea i posted that info on my other post. it was a vac leak. i plugged the vac line as you would golf tee mod using 7/32" ball bearing which i got from a bike store. you can also use a 4.5mm metal bb.

hl0m4n · 01-10-2008, 04:55 PM

the bubble wrap doesn't work...but the TENNIS BALL DOES!!!! just stick that in the compartment close it and voila no more rattle

Mo · 01-10-2008, 05:14 PM

How did the tennis ball fit in there???????????????????? That Rattle has been driving me crazy! Can you take a picture?

Quote:

Originally Posted by hl0m4n

the bubble wrap doesn't work...but the TENNIS BALL DOES!!!! just stick that in the compartment close it and voila no more rattle

hl0m4n · 01-10-2008, 05:50 PM

Quote:

Originally Posted by Mo

How did the tennis ball fit in there???????????????????? That Rattle has been driving me crazy! Can you take a picture?

what do you mean how does it fit? the tennis ball is perfect size. try it.

Mo · 01-10-2008, 05:52 PM

I didnt think that space was deep enough to fit a tennis ball... Thanks for the advice!

Quote:

Originally Posted by hl0m4n

what do you mean how does it fit? the tennis ball is perfect size. try it.

hl0m4n · 01-10-2008, 05:57 PM

Quote:

Originally Posted by Mo

I didnt think that space was deep enough to fit a tennis ball... Thanks for the advice!

its a perfect fit. the cover will not close with the ball in there. just push the ball a bit down when covering and voila done. its not a tight fit but perfectly snug fit.

e92phreak · 01-10-2008, 06:33 PM

Tennis ball? I will definitely try. Right now, I have a pair of rolled up Nike socks LOL...

e92phreak · 01-10-2008, 06:34 PM

But it's not just the small rear compartment in between the rear seats that rattles. I have rattling under the armrest compartment... or possibly where the rear vents are. All this rattling sucks...

Artz 330 · 01-10-2008, 06:36 PM

I have a creaking when the drivers window is up between the window and the seal on my coupe. I hate these frameless doors I get the same creaking on my M...

E92Fan · 01-10-2008, 09:08 PM

I have an obsession with rattles bordering on OCD (!) and have been investigating and fixing (with a dealer) the problems with rear seat rattles in the E92. After five months or so, we've sorted it out so that it is COMPLETELY silent. Our findings have gone back to BMW UK and are now referenced by other UK dealers where there are problems with other cars.

The problem when adding an exhaust is that the extra noise at around 2000rpm (actually from 1750-2250rpm generally) activates the resonant frequency within the rear of the car and hence leads to boom and rattles. That, coupled with the seemingly low initial tolerance of the rear seat mechanism off the factory line, leads to the annoying rattles and squeaks.

I've posted the general issues on the UK forum - link below. Get your dealer to look at these points and I'm sure you'll be able to reduce the rattles quite significantly.

http://www.e90post.com/forums/showthread.php?t=105043 (post #4)

01-07-2008, 01:37 AM	#1
hl0m4n Major General 2159 Rep 5,623 Posts Drives: BMW Join Date: Nov 2006 Location: NY iTrader: (58)	e92 Coupes Rattle In Back After Exhaust Install? does anyone else have rattling/vibrating noise at low rpm comming from the back after exhaust install? any idea what it is?
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01-07-2008, 01:45 AM	#2
e92phreak General 384 Rep 21,747 Posts Drives: E92 335i TiAg/E46 323i TiAg Join Date: Mar 2007 Location: CA iTrader: (1) Garage List 2007 E92 335i [9.50] 2000 E46 323i [0.00]	I get the rattle. Try folding down your seats and driving. After I folded them down, I noticed the rattle went away... so for me, it's definitely the rear seats. Also, the little tray inbetween the rear seats rumble during low RPMs. What exhaust do you have? __________________ 07 E92 335i \| TiAg \| Step \| Padl \| Cmft \| Alum Trm \| PDC \| Nav \| Assist \| Sat \| Lthr \| Prem \| Sprt \| Rear Splr \| RDSport Quads \| iPod \| V1 \| LT Refl \| VS Clear Bra \| OEM Lip \| KWV2 \| Mtec Sides \| BBS LM-R 00 E46 323i \| TiAg \| 5sp \| Sport \| Roof \| RDSport Cams \| RDSport tune \| RDSport Shift \| Volk LE37 \| M3 spoiler \| PSS9 \| SuperSprint \| Brembo
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01-07-2008, 02:07 AM	#3
nico335 Guest 0 Rep n/a Posts Drives:	+1 here funny and awkward, i just have a quart of oil in that middle tray and the rattling stops. i guess you just need something heavy in there lol.
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01-07-2008, 12:22 PM	#5
G33 Colonel 91 Rep 2,079 Posts Drives: 335i Join Date: Jun 2007 Location: London iTrader: (0)	its the tray in the middle. the flap that slides... just stick a load of bubble wrap in there to keep it pumped up so that the flap cant move - vibrate. i guess that shud work. i havent got round to doing it myself.
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01-07-2008, 12:38 PM	#7
G33 Colonel 91 Rep 2,079 Posts Drives: 335i Join Date: Jun 2007 Location: London iTrader: (0)	dunno i aint got a tennis ball to hand i dont think its deep enough for one to fit in, it might be too large and crack the flap? i need some balls (tennis) so ill have a go when i get them 2moro
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01-07-2008, 07:32 AM	#4
hl0m4n Major General 2159 Rep 5,623 Posts Drives: BMW Join Date: Nov 2006 Location: NY iTrader: (58)	i have the full supersprint setup. anyhow i did fold the seats down and brought out the entire seat belt and put back. i haven't had the rattling for awhile now and then all of a sudden today i have it again at low rpms. i don't think its effect the people with exhaust but also the golf tee people. nobody knows the exact source of the rattle or a definate answer on solution?
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01-07-2008, 12:47 PM	#8
Scott B Second Lieutenant 39 Rep 219 Posts Drives: 1M Join Date: Dec 2007 Location: NorCal iTrader: (2)	I noticed the same rattle (bone stock) and moved the slider in the rear back and forth a few times. It seems to have subsided for now. It seems to me that this should be a warranty issue. Has anyone approached a dealer about it?
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01-10-2008, 04:55 PM	#14
hl0m4n Major General 2159 Rep 5,623 Posts Drives: BMW Join Date: Nov 2006 Location: NY iTrader: (58)	the bubble wrap doesn't work...but the TENNIS BALL DOES!!!! just stick that in the compartment close it and voila no more rattle
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01-10-2008, 06:33 PM	#19
e92phreak General 384 Rep 21,747 Posts Drives: E92 335i TiAg/E46 323i TiAg Join Date: Mar 2007 Location: CA iTrader: (1) Garage List 2007 E92 335i [9.50] 2000 E46 323i [0.00]	Tennis ball? I will definitely try. Right now, I have a pair of rolled up Nike socks LOL... __________________ 07 E92 335i \| TiAg \| Step \| Padl \| Cmft \| Alum Trm \| PDC \| Nav \| Assist \| Sat \| Lthr \| Prem \| Sprt \| Rear Splr \| RDSport Quads \| iPod \| V1 \| LT Refl \| VS Clear Bra \| OEM Lip \| KWV2 \| Mtec Sides \| BBS LM-R 00 E46 323i \| TiAg \| 5sp \| Sport \| Roof \| RDSport Cams \| RDSport tune \| RDSport Shift \| Volk LE37 \| M3 spoiler \| PSS9 \| SuperSprint \| Brembo
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01-10-2008, 06:34 PM	#20
e92phreak General 384 Rep 21,747 Posts Drives: E92 335i TiAg/E46 323i TiAg Join Date: Mar 2007 Location: CA iTrader: (1) Garage List 2007 E92 335i [9.50] 2000 E46 323i [0.00]	But it's not just the small rear compartment in between the rear seats that rattles. I have rattling under the armrest compartment... or possibly where the rear vents are. All this rattling sucks... __________________ 07 E92 335i \| TiAg \| Step \| Padl \| Cmft \| Alum Trm \| PDC \| Nav \| Assist \| Sat \| Lthr \| Prem \| Sprt \| Rear Splr \| RDSport Quads \| iPod \| V1 \| LT Refl \| VS Clear Bra \| OEM Lip \| KWV2 \| Mtec Sides \| BBS LM-R 00 E46 323i \| TiAg \| 5sp \| Sport \| Roof \| RDSport Cams \| RDSport tune \| RDSport Shift \| Volk LE37 \| M3 spoiler \| PSS9 \| SuperSprint \| Brembo
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01-10-2008, 06:36 PM	#21
Artz 330 Colonel 196 Rep 2,486 Posts Drives: Z4M, 335i, 135i Join Date: Dec 2005 Location: Lawrenceville, NJ iTrader: (4) Garage List 2006 330i [0.00]	I have a creaking when the drivers window is up between the window and the seal on my coupe. I hate these frameless doors I get the same creaking on my M... __________________
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01-10-2008, 09:08 PM	#22
E92Fan Moderator 322 Rep 5,493 Posts Drives: . Join Date: Aug 2007 Location: . iTrader: (0)	I have an obsession with rattles bordering on OCD (!) and have been investigating and fixing (with a dealer) the problems with rear seat rattles in the E92. After five months or so, we've sorted it out so that it is COMPLETELY silent. Our findings have gone back to BMW UK and are now referenced by other UK dealers where there are problems with other cars. The problem when adding an exhaust is that the extra noise at around 2000rpm (actually from 1750-2250rpm generally) activates the resonant frequency within the rear of the car and hence leads to boom and rattles. That, coupled with the seemingly low initial tolerance of the rear seat mechanism off the factory line, leads to the annoying rattles and squeaks. I've posted the general issues on the UK forum - link below. Get your dealer to look at these points and I'm sure you'll be able to reduce the rattles quite significantly. http://www.e90post.com/forums/showthread.php?t=105043 (post #4) __________________ ... ... ... DMS Remap Review ----- Quaife LSD Review ----- Hartge Antiroll Bars Review ----- Bilstein PSS10 B16 Ride Control Review ----- Detail by ShineOn ----- Paintshield Review
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