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How to reduce road, traffic and tire noises ??

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E-Class (W212) 2010 - 2016: E 350, E 550

How to reduce road, traffic and tire noises ??

 
Old 03-03-2017, 04:49 AM
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How to reduce road, traffic and tire noises ??

Good morning everyone

I´m new in this forumand try to figure out how to reduce the „excessive“ road, traffic and tirenoises which end up in my cabin..

My car is a 2015Facelift S212 with a 2L petrol engine.

Do you know one of thefollowing situations?

When passing a truck ona motorway, the noise from the truck which is guided into the cabin is reallyloud. I can´t listen to the radio during that time..
Same situation when waitingat a traffic light. The noises from the crossing traffic are very loud. Itfeels like if there is no insulation material installed.
Additionally, I noticeall tire noises from cars driving in front of me. Even if they are 200m away.It´s similar to a fizzle, like a door is not completely closed and the wind blowsinto the clearance between door frame and door leaf...

I already checked allseals, tapped several gaps of the body, adjusted the doors, also addedadditional seals to some locations, etc etc. No significant change observed. Itseems my car is really bad insulated to noises which come from the front and especiallyfrom the side. I wouldn´t say my problems are based on wind noises, because whendriving alone on a motorway the overall noises are acceptable..

Out of this, I haveseveral questions to you:
Do you have similarproblems observed? Is there already a solution for one of the mentionedproblems available? I do not have acoustic glasses, but retrofitting should bepossible. Anyone any experience with that? Brings this a big influence? Hasanyone any idea what else I can do to reduce the cabin noises? To be honest, Iexpected a much better insulation from a Mercedes E-class…

Thanks a lot !


FEA-EN
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Old 03-03-2017, 09:58 AM
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I find that because the car itself is so quiet, it's much easier to hear outside sounds/noise. (though in a way this sounds a bit contradictory)

I'm pretty **** when it comes to sounds (a loose dashboard, wind noise...), but that also means that he more I focus on (what i think is) a problem, the bigger the problem gets..
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Old 03-03-2017, 12:46 PM
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Sorry to hear about your issues. Hope you find a solution soon.
Which country are you located in?
Is S212, the same as W212...?
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Old 03-03-2017, 02:03 PM
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Originally Posted by pamiboy View Post
Sorry to hear about your issues. Hope you find a solution soon.
Which country are you located in?
Is S212, the same as W212...?
s212 is the wagon if i understand it correctly...
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Old 03-03-2017, 02:23 PM
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I think Dbldpr on here lined his car with sound deadening material for this very reason. Maybe he can chime in on what he used.
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Old 03-03-2017, 08:05 PM
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Originally Posted by belarus27
s212 is the wagon if i understand it correctly...
Thanks for the clarification. Doesn't it seem odd that may be the S and W are improperly placed semantically at least S212 for Sedan and W212 for Wagon. .
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Old 03-04-2017, 01:33 AM
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Originally Posted by pamiboy View Post
Thanks for the clarification. Doesn't it seem odd that may be the S and W are improperly placed semantically at least S212 for Sedan and W212 for Wagon. .
Lol now that i thought about it ......yes it would make more sense , i guess they want us to be confused
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Old 03-04-2017, 08:49 AM
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I lined the trunk area where spare tire sets with sound deadening material sticky one side and foil on the other. Also took panels off underside and lined the bottom of car with same material and undercoated the panels. Dealer says the mechanics that have driven the car say it is the quietest car they have ever driven. Made a big improvement it preventing outside noise.
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Old 03-04-2017, 12:22 PM
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Originally Posted by dbldpr View Post
I lined the trunk area where spare tire sets with sound deadening material sticky one side and foil on the other. Also took panels off underside and lined the bottom of car with same material and undercoated the panels. Dealer says the mechanics that have driven the car say it is the quietest car they have ever driven. Made a big improvement it preventing outside noise.
I have the sedan but did the same thing. I lined the bottom of the trunk, under the spare tire with dynamat. This quieted the inside of the car significantly. I also read that another member, removed the wheel liners under the wheel arches, installed dynamat there, then reinstalled the wheel liners to block even more road noise. (Dynamat is the brand name of a sound deadening material that is sticky on one side, foil on the other.)

Last edited by Tump43; 03-04-2017 at 12:24 PM.
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Old 03-04-2017, 12:25 PM
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Originally Posted by Tump43 View Post
I have the sedan but did the same thing. I lined the bottom of the trunk, under the spare tire with dynamat. This quieted the inside of the car significantly. I also read than another member, removed the wheel liners under the wheel arches, installed dynamat there, then reinstalled the wheel liners to block even more road noise. (Dynamat is the brand name of a sound deadening material sticky on one side, foil on the other.)
There is no room to put sound deadening material in wheel wells. I tried. and you cannot get at it from inside. I gave up and just did the underside and trunk.
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Old 03-04-2017, 09:16 PM
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I installed dynamat sound deadening materials on my both my front doors, rear upper trunk deck and the trunk while upgrading my sound system. Definitely could tell the difference.
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Old 03-05-2017, 03:06 PM
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To really get a quieter car you would have to get something else, probably not of European origin.
Asian cars ride much quieter when you get into the luxury or near luxury field. German cars tend to be noisier because engineers equate noise to performance.
Another factor is that there is less soundproofing because it adds weight.
If it has Michellin tires, that's another problem.
If it has low profile tires, that's another problem.
A lot of the tire noise is coming from the wheel wells.
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Old 03-05-2017, 03:39 PM
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Originally Posted by El Cid View Post
To really get a quieter car you would have to get something else, probably not of European origin.
Asian cars ride much quieter when you get into the luxury or near luxury field. German cars tend to be noisier because engineers equate noise to performance.
Another factor is that there is less soundproofing because it adds weight.
If it has Michellin tires, that's another problem.
If it has low profile tires, that's another problem.
A lot of the tire noise is coming from the wheel wells.
I agree
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Old 03-06-2017, 05:08 AM
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Originally Posted by dbldpr View Post
I lined the trunkarea where spare tire sets with sound deadening material sticky one side andfoil on the other. Also took panels off underside and lined the bottom of carwith same material and undercoated the panels. Dealer says the mechanics thathave driven the car say it is the quietest car they have ever driven.
Originally Posted by dbldpr View Post
Made abig improvement it preventing outside noise.



Hi dbldpr,


that´s interesting. Can you please explaina little bit how you have lined the bottom of your car? Where have you addedthe sound deadening material? Do you have any pictures?


Here is a list of what I have alreadydone:

  • I already damped the trunk of my wagonwith Alubutyl and Reckhorn insulating fleece.
  • I damped all wheelhouses from the outside alsowith Alubutyl and in addition a water resistant acoustic absorption material.
  • I changed from 17” to 16” tires.
All in all I still think my car is much tooloud. The problem is mainly, I can´t figure out a hotspot of the noises. I havethe feeling the noises are coming from everywhere.


I´m really surprised when your dealer issaying it´s the quietest car he has ever driven… maybe the key for silence isto insulate the bottom of the car. As I said, some more information would begreat.


Thanks,
Eugene
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Old 03-06-2017, 07:24 AM
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Originally Posted by FEA-EN View Post


Hi dbldpr,


that´s interesting. Can you please explaina little bit how you have lined the bottom of your car? Where have you addedthe sound deadening material? Do you have any pictures?


Here is a list of what I have alreadydone:
  • I already damped the trunk of my wagonwith Alubutyl and Reckhorn insulating fleece.
  • I damped all wheelhouses from the outside alsowith Alubutyl and in addition a water resistant acoustic absorption material.
  • I changed from 17” to 16” tires.
All in all I still think my car is much tooloud. The problem is mainly, I can´t figure out a hotspot of the noises. I havethe feeling the noises are coming from everywhere.


I´m really surprised when your dealer issaying it´s the quietest car he has ever driven… maybe the key for silence isto insulate the bottom of the car. As I said, some more information would begreat.


Thanks,
Eugene
I removed these panels from under side of car then put the sound deadening material on the car and sprayed the panels with sound deadening spray then painted them. Then put panels back on.
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Old 03-06-2017, 09:42 AM
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Thanks a lot, dbldpr!


Last question: Can you please name the material you have used?


Greetings from Norway,
Eugene
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Old 03-06-2017, 09:47 AM
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Originally Posted by FEA-EN View Post
Thanks a lot, dbldpr!


Last question: Can you please name the material you have used?


Greetings from Norway,
Eugene
I Have to look it up give me a couple hrs.
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Old 03-06-2017, 09:52 AM
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Sure, thanks for your help.
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Old 03-06-2017, 05:45 PM
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Originally Posted by FEA-EN View Post
Sure, thanks for your help.
could not find the paperwork from purchase of sound deadening material. will look in the garage later to see if I kept box
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Old 03-06-2017, 06:23 PM
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Originally Posted by dbldpr View Post
could not find the paperwork from purchase of sound deadening material. will look in the garage later to see if I kept box
Got on Ebay from GT sound Control NEW 24sqft GTMAT PRO 50mil Car Trunk Automotive Sound Deadener Material Kit Bought 2 rolls. Hope this helps
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Old 03-07-2017, 06:49 AM
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Thanks, that´s what we call Alubutyl (ABX) in Europe. Problem with ABX, once added, never ever removable


I start with some smart tests on the panel. Hopefully I reach the same noise level as you have..


EN
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Old 03-07-2017, 07:40 AM
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Originally Posted by FEA-EN View Post
Thanks, that´s what we call Alubutyl (ABX) in Europe. Problem with ABX, once added, never ever removable


I start with some smart tests on the panel. Hopefully I reach the same noise level as you have..


EN
I would never remove it and made sure I only put it where I wanted it
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Old 03-07-2017, 07:55 AM
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Agree.


What is your impression before and after? Is it much quieter now?
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Old 03-07-2017, 08:13 AM
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Originally Posted by FEA-EN View Post
Agree.


What is your impression before and after? Is it much quieter now?
Only have about a 10th of the noise. Tremendous improvement with the underside and trunk done.
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Old 03-07-2017, 08:31 AM
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You make me curious. I try it out and give feedback when I´m ready.


If I have a 10th (!!) of the noise, I spend a beer


Thanks,
Eugene
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