How to reduce road, traffic and tire noises ??
#51
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2014 E350 4M Diamond Silver
used the below coupon and got the noico 80mil 36sqft black version for around 54$.
https://slickdeals.net/f/11790703-eb...src=SiteSearch
https://slickdeals.net/f/11790703-eb...src=SiteSearch
#52
Member
FWIW--I think the biggest contributor to road noise are your choice of tires . I am running Continental Conti-Pro 245/40 R18 on the front and 265/35R-18 on the rear, NOT run flats and the car is really quiet. For comparison my previous ride a BMW 535 with runflats was the noisiest vehicle I've owned.
#53
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2014 E350 4M Diamond Silver
Finally did it.
More pics and videos coming up.
Before:
After. I rest some left over pieces on top of the tire well. Will put some more without sticking on the top.
More pics and videos coming up.
Before:
After. I rest some left over pieces on top of the tire well. Will put some more without sticking on the top.
Last edited by raja777m; 07-15-2018 at 10:28 PM.
#54
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2014 E350 4M Diamond Silver
Under the rear seat bench.
You see that hook next to the red wire, that one was tough by the way I pulled the seat from the other side.
After the deadening materials: I was lazy to stick them even..!
You see that hook next to the red wire, that one was tough by the way I pulled the seat from the other side.
After the deadening materials: I was lazy to stick them even..!
Last edited by raja777m; 07-15-2018 at 10:35 PM.
#55
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2014 E350 4M Diamond Silver
Before:
Trunk only:
Trunk and seat:
After all the effort I feel I saved only 1-2 decibels.
And one more problem is, my tires are 17" stock Luxury wheels with Run Flat tires. They have enough tread to replace them soon enough.
Trunk only:
Trunk and seat:
After all the effort I feel I saved only 1-2 decibels.
And one more problem is, my tires are 17" stock Luxury wheels with Run Flat tires. They have enough tread to replace them soon enough.
Last edited by raja777m; 07-15-2018 at 10:39 PM.
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thefisch (07-16-2018)
#56
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At least you took some measurements. Were those readings while driving over the same roads? The peaks and maxes seem lower.
#60
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2014 e250 bluetec
What app and what iphone do you have? I used "decibel sound meter" on my iphone X and recorded my measurements at: 68-70db going 75-80mph on concrete freeway. 66-68db going 75-80mph on newer concrete freeway, and 64db going 75-80mph on smooth black asphalt freeway.
I used noico sound mat around my adblue tank in the truck (although not sealed edge to edge like I see in the pictures above), with some leftover uhaul packing blankets all around it and on top. I also used the noico sound mats under the back seat. I just bought a new 17" set of pirelli cinturato all season plus tires.
I still think my e250 is loud, but my previous car was a supercharged range rover sport with acoustic glass. I will say that it is definitely quieter than my wife's porsche cayenne with 21" wheels and conti dws tires.
I used noico sound mat around my adblue tank in the truck (although not sealed edge to edge like I see in the pictures above), with some leftover uhaul packing blankets all around it and on top. I also used the noico sound mats under the back seat. I just bought a new 17" set of pirelli cinturato all season plus tires.
I still think my e250 is loud, but my previous car was a supercharged range rover sport with acoustic glass. I will say that it is definitely quieter than my wife's porsche cayenne with 21" wheels and conti dws tires.
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raja777m (07-17-2018)
#62
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2014 E350 4M Diamond Silver
What app and what iphone do you have? I used "decibel sound meter" on my iphone X and recorded my measurements at: 68-70db going 75-80mph on concrete freeway. 66-68db going 75-80mph on newer concrete freeway, and 64db going 75-80mph on smooth black asphalt freeway.
I used noico sound mat around my adblue tank in the truck (although not sealed edge to edge like I see in the pictures above), with some leftover uhaul packing blankets all around it and on top. I also used the noico sound mats under the back seat. I just bought a new 17" set of pirelli cinturato all season plus tires.
I still think my e250 is loud, but my previous car was a supercharged range rover sport with acoustic glass. I will say that it is definitely quieter than my wife's porsche cayenne with 21" wheels and conti dws tires.
I used noico sound mat around my adblue tank in the truck (although not sealed edge to edge like I see in the pictures above), with some leftover uhaul packing blankets all around it and on top. I also used the noico sound mats under the back seat. I just bought a new 17" set of pirelli cinturato all season plus tires.
I still think my e250 is loud, but my previous car was a supercharged range rover sport with acoustic glass. I will say that it is definitely quieter than my wife's porsche cayenne with 21" wheels and conti dws tires.
Even though I blame the run flats on my 17" but still I got minimal results.
Anyway, that's just my experience. For other people who are starting this mod/upgrade, make sure you take readings as such for educational purposes.
#63
DB levels have a something close to an exponential curve. Every 3 decibel increase is a double in sound volume. If you can decrease 1 to 2 decibels that would be a very good reduction in noise. Auto engineers give each other high fives when they lower DBs by 2 or 1.
#64
Junior Member
Hello, sorry for my english..
I did an insulation upgarde for trunk area which resulted a noticable noise reduction for my sedan w212.
It is applicable for especially high/mid frequency tones which comes from rear side of car. Here are the photos:
My spare tire, tire kit and trunk covers. Removed before installation.
My tool bag and materials.
1st step installation of Insulation Material. "Oto Yalıtım 11". Made with polyester, self adhesive very strong, flexible. I noticed that the material is compact/intensive, 4mm thickness. Durable up to 110 Celcius. This is for high and mid freq tones.
1st step installation of Insulation Material. "Firex Foam". Self adhesive very strong, flexible, fire resistant with 20mm thickness. This is for low freq tones.
I did an insulation upgarde for trunk area which resulted a noticable noise reduction for my sedan w212.
It is applicable for especially high/mid frequency tones which comes from rear side of car. Here are the photos:
My spare tire, tire kit and trunk covers. Removed before installation.
My tool bag and materials.
1st step installation of Insulation Material. "Oto Yalıtım 11". Made with polyester, self adhesive very strong, flexible. I noticed that the material is compact/intensive, 4mm thickness. Durable up to 110 Celcius. This is for high and mid freq tones.
1st step installation of Insulation Material. "Firex Foam". Self adhesive very strong, flexible, fire resistant with 20mm thickness. This is for low freq tones.
#65
Hello, sorry for my english..
I did an insulation upgarde for trunk area which resulted a noticable noise reduction for my sedan w212.
It is applicable for especially high/mid frequency tones which comes from rear side of car. Here are the photos:
My spare tire, tire kit and trunk covers. Removed before installation.
My tool bag and materials.
1st step installation of Insulation Material. "Oto Yalıtım 11". Made with polyester, self adhesive very strong, flexible. I noticed that the material is compact/intensive, 4mm thickness. Durable up to 110 Celcius. This is for high and mid freq tones. https://www.youtube.com/watch?v=pX_XEB2ZpEQ
1st step installation of Insulation Material. "Firex Foam". Self adhesive very strong, flexible, fire resistant with 20mm thickness. This is for low freq tones.
I did an insulation upgarde for trunk area which resulted a noticable noise reduction for my sedan w212.
It is applicable for especially high/mid frequency tones which comes from rear side of car. Here are the photos:
My spare tire, tire kit and trunk covers. Removed before installation.
My tool bag and materials.
1st step installation of Insulation Material. "Oto Yalıtım 11". Made with polyester, self adhesive very strong, flexible. I noticed that the material is compact/intensive, 4mm thickness. Durable up to 110 Celcius. This is for high and mid freq tones. https://www.youtube.com/watch?v=pX_XEB2ZpEQ
1st step installation of Insulation Material. "Firex Foam". Self adhesive very strong, flexible, fire resistant with 20mm thickness. This is for low freq tones.