BMW Garage BMW Meets Register Search Today's Posts Mark Forums Read
BMW M2 Forum > BMW M2 Discussions > Sound deadening

Post Reply
 
Thread Tools Search this Thread
      02-26-2016, 01:55 PM   #89
Verbiage
Dismembered Member
Verbiage's Avatar
Jamaica
3474
Rep
9,206
Posts

Drives: F80 ZCP 6MT, R55 Clubman S 6MT
Join Date: Jan 2010
Location: DMV

iTrader: (6)

Quote:
Originally Posted by 3tekcorps View Post
It's going to sound like a WRX at cruising speeds and a GTR at WOT!

There's a great solution though:
Forza?
__________________

My delivery experience and beach photoshoot here.
Appreciate 0
      02-26-2016, 02:02 PM   #90
3tekcorps
Major
781
Rep
1,037
Posts

Drives: In Gestation
Join Date: Jan 2016
Location: USA

iTrader: (0)

Quote:
Originally Posted by Verbiage View Post
Forza?
Is porn your solution for no date?
Appreciate 0
      02-26-2016, 02:04 PM   #91
Verbiage
Dismembered Member
Verbiage's Avatar
Jamaica
3474
Rep
9,206
Posts

Drives: F80 ZCP 6MT, R55 Clubman S 6MT
Join Date: Jan 2010
Location: DMV

iTrader: (6)

Quote:
Originally Posted by 3tekcorps View Post
Is porn your solution for no date?
Sometimes.
__________________

My delivery experience and beach photoshoot here.
Appreciate 1
      02-26-2016, 05:32 PM   #92
nikotine30
New Member
28
Rep
12
Posts

Drives: Acura RSX
Join Date: Jul 2009
Location: Montreal

iTrader: (0)

Quote:
Originally Posted by G8rGrl View Post
So, what's the bottom line? Is my prospective daily driver (M2) going to be a loud ass tin can that makes it impossible to take calls on the speakerphone? Or is it going to sound like a performance car that just happens to be a little louder than the M235i?
Hi G8rGrl, to answer your query and also the OP's, the bottom line when comparing the BMW M2's sound level to the m235i is this:

- Under heavy acceleration, the M2 is 9 db louder than the m235i, which is almost 'twice as loud' ('twice as loud' = 10 db)
- At highway speeds, the M2 is 5 db louder than the m235i, which is 'noticeably louder'.

The qualifications 'twice as loud' and 'noticeably louder' come from the world of psycho-acoustics (how the ear perceives loudness).

Here are some comparisons. All numbers from C&D's testing charts:

Comparison at highway speed (constant 70 MPH):

- BMW M2: 72 db
- BMW m235i: 67 db (difference -5 db)
- BMW 340i: 70 db (difference -2 db)
- Porsche Cayman GTS: 73 db (difference +1 db)
- Porsche Cayman GT4: 76 db (difference +4 db)
- MB E350 (2014): 68 db (difference -4 db)
- MB S500 (2015): 62 db (difference -10 db)

Comparison under heavy acceleration (wide open throttle):

- BMW M2: 89 db
- BMW m235i: 80 db (difference -9 db)
- BMW 340i: 76 db (difference -13 db)
- Porsche Cayman GTS: 87 db (difference -2 db)
- Porsche Cayman GT4: 90 db (difference +1 db)
- MB E350 (2014): 77 db (difference -12 db)
- MB S500 (2015): 67 db (difference -22 db)


For reference:
- +3 db is "barely perceptibly louder"
- +6 db is "clearly noticeably louder"
- +10 db is "twice as loud as"

Interestingly, and if we rely on C&D measurements, the m235i is actually a very quiet car, as quiet (or very very slightly quieter) than an MB E350 at highway speeds. And the MB S500 is quiet as a vault.

Last edited by nikotine30; 02-26-2016 at 05:57 PM..
Appreciate 6
      02-26-2016, 05:57 PM   #93
kovsky
Private First Class
United_States
198
Rep
146
Posts

Drives: M2, finally
Join Date: Oct 2015
Location: SoCal

iTrader: (0)

Quote:
Originally Posted by nikotine30 View Post
words, lots of them.
TLDR: G8rGrl, if you are driving your car civilly you can make your calls in the M2.
Appreciate 1
      02-26-2016, 09:31 PM   #94
King_Slayer
Second Lieutenant
King_Slayer's Avatar
Canada
130
Rep
241
Posts

Drives: 2017 BMW M2
Join Date: Oct 2015
Location: GTA

iTrader: (0)

Do we know what setting the M2 was in during the testing? If it was in Sport or Sport+ how much louder do you think that will be compared to comfort?
Appreciate 1
rich8566563.00

      02-27-2016, 12:21 AM   #95
3tekcorps
Major
781
Rep
1,037
Posts

Drives: In Gestation
Join Date: Jan 2016
Location: USA

iTrader: (0)

Quote:
Originally Posted by King_Slayer View Post
Do we know what setting the M2 was in during the testing? If it was in Sport or Sport+ how much louder do you think that will be compared to comfort?
http://media.caranddriver.com/files/...rbmwm22016.pdf


Traction and Stability off! Would that be Sport +?

The other variable is how much noise Active Sound pumps into the cabin.
Appreciate 0
      02-27-2016, 09:07 AM   #96
Dabozo
Major
Dabozo's Avatar
561
Rep
1,360
Posts

Drives: M2 BSM MT
Join Date: Aug 2015
Location: Toronto

iTrader: (0)

My last car was a g37s coupe. I did not find this car uncomfortably loud.
G37: Sound level
@ idle (dB) 42.6
@ Full throttle (dB) 77.6
@ 70 mph cruise (dB) 68.3

At cruise I think I can live with 4db higher. But based on psycho acoustics, at wot, it will be perceived as more than 2x louder!! Wow.
But this is perfect imo. Somewhat civil st cruise relatively speaking (I had no trouble using hands free for calls). But if I'm driving at wot, it's probably because I'm having some fun so I want it loud!
Appreciate 0
      02-27-2016, 09:18 AM   #97
Kantalias
Private First Class
United_States
125
Rep
173
Posts

Drives: 2016 M2
Join Date: Dec 2013
Location: New Mexico

iTrader: (0)

Quote:
Originally Posted by Dabozo View Post
My last car was a g37s coupe. I did not find this car uncomfortably loud.
You and I are making the exact same upgrade!
Appreciate 0
      02-27-2016, 09:58 AM   #98
Dabozo
Major
Dabozo's Avatar
561
Rep
1,360
Posts

Drives: M2 BSM MT
Join Date: Aug 2015
Location: Toronto

iTrader: (0)

Quote:
Originally Posted by Kantalias View Post
You and I are making the exact same upgrade!
I had an 09 and loved it. Only thing that bugged me was the clutch and lack of low end torque. Both of which I'm sure will be vastly improved with the M2.

I sold mine last summer. It has been a loooooong wait (and counting) without a "fun" car in my garage.
Appreciate 0
      02-27-2016, 03:40 PM   #99
jjr261
New Member
Canada
12
Rep
21
Posts

Drives: 2016 M2 BSM DCT
Join Date: Feb 2016
Location: London Ontario

iTrader: (0)

Quote:
Originally Posted by 3tekcorps View Post
http://media.caranddriver.com/files/...rbmwm22016.pdf


Traction and Stability off! Would that be Sport +?

The other variable is how much noise Active Sound pumps into the cabin.
Hi all,

I have a deposit in for an M2 and am more curious versus concerned about noise levels.

I would think that part of this elevated M2 measurement would come from both the louder exhaust volume and increased engine enhancement via the stereo when in Sport Plus.

I have a 2013 335i which measures at 64db as per Car and Driver. It is definitely a quiet car when cruising fast. My other vehicle (a Mazda CX-5) measured at 70 in C&D, and it is somewhat louder at that speed, but certainly not unbearable.

The 2016 340i - essentially the exact same platform as my 335 with the same size summer performance tires, but including engine enhancement via the stereo, and apparently more of a vocal actual exhaust note vs the 335 measured at 70db. That is a BIG difference for such similar vehicles, I would guess that either the 340i or M2 would measure somewhat lower in 'comfort' mode without the additional noise being generated due to the higher performance settings being used while tested.

So there is likely some degree of range of loudness available depending on settings...
Appreciate 0
      02-27-2016, 11:26 PM   #100
King_Slayer
Second Lieutenant
King_Slayer's Avatar
Canada
130
Rep
241
Posts

Drives: 2017 BMW M2
Join Date: Oct 2015
Location: GTA

iTrader: (0)

Quote:
Originally Posted by jjr261 View Post
Hi all,

I have a deposit in for an M2 and am more curious versus concerned about noise levels.

I would think that part of this elevated M2 measurement would come from both the louder exhaust volume and increased engine enhancement via the stereo when in Sport Plus.

I have a 2013 335i which measures at 64db as per Car and Driver. It is definitely a quiet car when cruising fast. My other vehicle (a Mazda CX-5) measured at 70 in C&D, and it is somewhat louder at that speed, but certainly not unbearable.

The 2016 340i - essentially the exact same platform as my 335 with the same size summer performance tires, but including engine enhancement via the stereo, and apparently more of a vocal actual exhaust note vs the 335 measured at 70db. That is a BIG difference for such similar vehicles, I would guess that either the 340i or M2 would measure somewhat lower in 'comfort' mode without the additional noise being generated due to the higher performance settings being used while tested.

So there is likely some degree of range of loudness available depending on settings...

Welcome, and thanks for the post
Appreciate 0
      02-28-2016, 03:41 AM   #101
WAY
Brigadier General
Australia
371
Rep
4,810
Posts

Drives: Fast ones
Join Date: Jul 2007
Location: Melbourne, Australia

iTrader: (0)

I'm quite surprised by the negative comments in this thread. BMW went to the effort of removing as much sound deadening as possible in the M2 to make it a more raw experience and remove as much weight as possible, which I would have thought appeals to this demographic. The most interesting thing I've read is that they had to add back a mere 300g of sound deadening from the roof because it made the car too loud when it rained!

Btw, my current daily drive is a Megane Trophy-R (what sound deadening?) so the M2 is going to be my new quiet daily lol.
Appreciate 3
      02-28-2016, 04:42 AM   #102
AlpsRider
Colonel
AlpsRider's Avatar
1637
Rep
2,562
Posts

Drives: M2 Competition, LBB, 6MT
Join Date: May 2015
Location: Earth

iTrader: (0)

It seems to me that the only fair way to compare cabin noise is to make the comparison with the active sound turned off/down in comfort mode. Artificial sound should not be counted as cabin noise.
Appreciate 1
      02-28-2016, 10:17 AM   #103
3tekcorps
Major
781
Rep
1,037
Posts

Drives: In Gestation
Join Date: Jan 2016
Location: USA

iTrader: (0)

Quote:
Originally Posted by AlpsRider View Post
It seems to me that the only fair way to compare cabin noise is to make the comparison with the active sound turned off/down in comfort mode. Artificial sound should not be counted as cabin noise.
That's true. The issue is it's all subjective and some of us have cars on order.
Appreciate 0
      02-28-2016, 02:18 PM   #104
swagon
Brigadier General
swagon's Avatar
No_Country
4486
Rep
4,807
Posts

Drives: E82|F80|6MT
Join Date: Jun 2013
Location: .

iTrader: (0)

A number of M3 owners have commented on how quieter the car is at constant speed without ASD. Though you might hear the tires a bit more since ASD has a noise-cancelling feature if I'm not mistaken.
Appreciate 0
      02-28-2016, 03:27 PM   #105
AlpsRider
Colonel
AlpsRider's Avatar
1637
Rep
2,562
Posts

Drives: M2 Competition, LBB, 6MT
Join Date: May 2015
Location: Earth

iTrader: (0)

Quote:
Originally Posted by swagon View Post
A number of M3 owners have commented on how quieter the car is at constant speed without ASD. Though you might hear the tires a bit more since ASD has a noise-cancelling feature if I'm not mistaken.
Hmm, I've never heard that BMW has noise cancelling in their ASD. I know that some car makers have it though.
Appreciate 0
      02-28-2016, 04:13 PM   #106
Pyrat 2
Colonel
Pyrat 2's Avatar
United_States
1232
Rep
2,526
Posts

Drives: Rapidly from A to B
Join Date: Jun 2005
Location: Illinois

iTrader: (2)

Garage List
2020 BMW X1  [0.00]
2016 Porsche GT4  [0.00]
Too loud then disconnect the asd and toss some carpet mats under your weathertechs in the car and trunk.
Too quiet then leave asd connected use weathertechs only and buy an aftermarket or bmwp exhaust.

Next.
__________________
2016 M2, 2014 X1, 2013 135is, 2006 330i, 2003 323 Ci, 2001 330i, 1999 M3 (RIP), 1996 318is, some non-BMWs
Appreciate 0
      02-28-2016, 05:26 PM   #107
King_Slayer
Second Lieutenant
King_Slayer's Avatar
Canada
130
Rep
241
Posts

Drives: 2017 BMW M2
Join Date: Oct 2015
Location: GTA

iTrader: (0)

Not sure if this was posted in this thread. Good comparison for those that have a 1M.

2011 BMW 1M interior noise

Idle in Neutral - 55 dBA
Maximum, 1st gear - 81 dBA
Constant 50mph - 76 dBA
Constant 70mph - 80 dBA




2016 BMW M2 interior noise

Idle - 51 dBA
Full throttle - 89 dBA
70mph cruising - 72 dBA
Appreciate 0
      02-28-2016, 05:58 PM   #108
gthal
Major General
gthal's Avatar
Canada
1829
Rep
5,687
Posts

Drives: 2018 340i xDrive
Join Date: Jul 2007
Location: Canada

iTrader: (2)

Quote:
Originally Posted by King_Slayer View Post
Not sure if this was posted in this thread. Good comparison for those that have a 1M.

2011 BMW 1M interior noise

Idle in Neutral - 55 dBA
Maximum, 1st gear - 81 dBA
Constant 50mph - 76 dBA
Constant 70mph - 80 dBA

2016 BMW M2 interior noise

Idle - 51 dBA
Full throttle - 89 dBA
70mph cruising - 72 dBA
Holy cow!! The 1M is really loud for a 70mph cruise. Odd it is quieter on hard acceleration and louder at cruising speed. 80dBA at a 70mph cruise would drive me bonkers on a long road trip.
__________________
2018 340i | Mineral Gray | Current DD | C8 mid-engine Corvette to come next year
2016 M2 | Long Beach Blue | 6MT
2015 M4 | Austin Yellow | DCT
2014 Corvette Stingray | Z51 | Torch Red | 7MT
2012 MB C63AMG | 2011 E92 M3 | 2010 E92 M3 | 1996 E36 M3 (track car)
Appreciate 0
      02-28-2016, 06:30 PM   #109
Kantalias
Private First Class
United_States
125
Rep
173
Posts

Drives: 2016 M2
Join Date: Dec 2013
Location: New Mexico

iTrader: (0)

Quote:
Originally Posted by King_Slayer View Post
Not sure if this was posted in this thread. Good comparison for those that have a 1M.

2011 BMW 1M interior noise

Idle in Neutral - 55 dBA
Maximum, 1st gear - 81 dBA
Constant 50mph - 76 dBA
Constant 70mph - 80 dBA
This has been discussed in this thread, but your numbers don't match. Do you have anything to bolster your contradictory data?

Also, dB SPL typically aren't A-weighted. Do you intend these units?
Appreciate 0
      02-28-2016, 11:08 PM   #110
oldmanstyle
Second Lieutenant
101
Rep
261
Posts

Drives: M3
Join Date: Feb 2010
Location: USA

iTrader: (0)

need to verify what mode it was in before getting too excited about these dB measurements
Appreciate 0
Post Reply

Bookmarks

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off



All times are GMT -5. The time now is 02:11 PM.




m2
Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2020, vBulletin Solutions Inc.
1Addicts.com, BIMMERPOST.com, E90Post.com, F30Post.com, M3Post.com, ZPost.com, 5Post.com, 6Post.com, 7Post.com, XBimmers.com logo and trademark are properties of BIMMERPOST