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I've already done the trunk of my wagon several weeks ago. Can't say it was worth the work. Only very little improvement..
BTW: It was easier than expected to remove all covers and panels.
Needed to remove trunk covers and panels (wagon) Everything removed including the sides (wagon)
After paying more than 60K for a supposed to be luxury vehicle, if I have to pry open the underside and stuff it with some material from Walmart ....???? That would be quite the undoing of my new car purchase. . Don't you think so...!!! Just saying. I'm quite happy with the sound level of my car BTW, with due respect to those who dared to do otherwise.
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.
Your point makes sense. But you'd think for the cost of these vehicles we so much love, the manufacturer would be more considerate of things such as 'road noise" reduction. But oh well. we drive on!
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.
Originally Posted by Tump43
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.)
Originally Posted by Royce118
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.
Originally Posted by dbldpr
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
Hey guys..thanks for the tip(s). Is "Dynamat" and "GTMAT PRO 50mil Car Trunk Automotive Sound Deadener" synonymous with each other?
I can understand the section of the trunk where the spare sits, but how did you guys get to the front door panels, upper trunk deck, and underside panels? Can you posts pics of the areas you are referring to (and removal instructions)?
How do you guys install it in the spare tire well? The auxiliary battery is there. Do you remove the battery and install under it or just install around it?
For firewall, I believe you can try this also.
2014 E350 also restored: 1969 Camaro convertible SS 1957 Chevy Belair 2dr hardtop
Originally Posted by LALALAND
How do you guys install it in the spare tire well? The auxiliary battery is there. Do you remove the battery and install under it or just install around it?
For firewall, I believe you can try this also. https://www.amazon.com/3M-03584-Prof...PYQE2YTJ2YMFBE
around battery cannot spray firewall gets to messy unless you have engine out.
A lot of the tire noise is coming from the wheel wells.
I agree with this. I don't know why we need 245 width tires. I don't need to pull 1g on these cars. Or, more precisely 0.86 g's according car and driver. when my tires wear out i'm replacing the whole wheel tire combo to 225/50 17's.
Hi, I finally add some sound damping mat around the spare tire well into those bare metals. Didn't install it near the auxiliary battery (about 14" x 8") nor the area near negative wire connecting to the car (about 5"x 5"). Does any of you install it on the big black plastic tray at the bottom? I wasn't able to remove the tray as it seem glue to the car.
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.
Thanks for this. I recently lined my trunk with sound deadening mat (I used affordable Noico 80-mil from Amazon) and it made a noticeable difference but has motivated me to keep going. I’ll try this next.
Related question, did you jack up your car? Did you do one side at a time? How did you jack one side and get it safely on jack stands?
Also... Have you considered spraying sound deadener onto the fender liners?
Last edited by VirtualRain; May 21, 2018 at 10:21 AM.
2014 E350 also restored: 1969 Camaro convertible SS 1957 Chevy Belair 2dr hardtop
Originally Posted by VirtualRain
Thanks for this. I recently lined my trunk with sound deadening mat (I used affordable Noico 80-mil from Amazon) and it made a noticeable difference but has motivated me to keep going. I’ll try this next.
Related question, did you jack up your car? Did you do one side at a time? How did you jack one side and get it safely on jack stands?
Also... Have you considered spraying sound deadener onto the fender liners?
Just slid jack under front side of car and another on the rear side of car and crawled underneath and took them off and then put them back on. One side at a time. I had so much of improvement with the trunk lining and underside that I thought it was enough. I lost 80% of my hearing in the military so I only heard the noise when I had my hearing aids on. Now I barely hear any noise with the hearing aids in and I hear nothing when I do not have them on.
Just slid jack under front side of car and another on the rear side of car and crawled underneath and took them off and then put them back on. One side at a time. I had so much of improvement with the trunk lining and underside that I thought it was enough. I lost 80% of my hearing in the military so I only heard the noise when I had my hearing aids on. Now I barely hear any noise with the hearing aids in and I hear nothing when I do not have them on.
Thanks. Which side of those panels did you spray with sound deadener? The side facing the road or the side facing the car?
Also, Why did you paint them? Isn’t the sound deadener spray on material already black?
2014 E350 also restored: 1969 Camaro convertible SS 1957 Chevy Belair 2dr hardtop
Originally Posted by VirtualRain
Thanks. Which side of those panels did you spray with sound deadener? The side facing the road or the side facing the car?
Also, Why did you paint them? Isn’t the sound deadener spray on material already black?
I’m looking forward to trying this.
The side facing road. I also painted them because it makes it easier to clean. The sound deadening spray is textured and I needed smooth to clean if I wanted to clean them.
sound deadening mats.... After a couple hours and some cuts from the aluminum (use some good gloves) I was able to reduce some road noise from my e350 2014 sport model!
I was able to pull out the trunk panels and spare tire and noticed that the trunk contained a plastic cover for the tire which basically covers a 2 ft hole with a plastic mold. I covered it and also did the "tap test" to check the vibration of the metal and strategically cut and placed the mats.
I noticed a huge difference in road noise. Now all I hear is some minor road noise due to changes in asphalt to cement. I also hear a lot of wind in the back.
I'm thinking about doing the rear doors and rear seat next to see if I can make it more "tomb" like...
So far I believe this was a good investment since having a sport model with lowered suspension I do get some tire noise but also, I kind of enjoy listening to the wind blow past!
Lots of good solutions, here's another option as well. I've done a number of restorations that included this material. Zero issues, no smell, no loss of adhesion. The oldest application is coming up on 5 years no with no problems.
Quick Roof (Home Depot) or in this case Peel & Stick from Lowes. $18 for 6"x25' roll, more than enough to do the trunk area. This material is a 1/8" thick rubber/asphaltic base with adhesive. I have found it to be very good for sound deadening. I'm sure on the audiophile level, other materials are superior but this stuff has been very good for the intended purpose. If you know anything about older VW's they are basically a tin can with wheels. Application of this stuff really added a solid thunk feel to the entire car, huge difference.
I also had some good 3/8" felt left from the interior installation in my bug. Peel & Stick was used throughout the car.
Application to trunk area.
Felt pad placed below spare tire.
Noticeable reduction in that whoosh noise on the road, especially when beside another vehicle. I also want to apply material below rear seat base as I think that's another noise source.
Edit: I wanted to clarify that although noise is noticeably reduced, there still remains what sounds to me like tire and general undercarriage road noise. I know the lower profile tires (Contintental PureContact) and perhaps slightly stiffer sport suspension contribute to this. Suspension and underbody were inspected at dealer about a month or so ago when some ac warranty work was being done, so I know mechanicals are ok. Underbody panels were replaced a couple of years ago so they are in good shape, but I agree with the above posters that added more soundproofing to underbody. To be realistic, I don't think this car will ever be bank vault quiet, but I am ok with doing some of the mods related to at least reducing resonance and some related noise levels.
I just finished adding more Neico to the rear seat base and cleaned up some of the resonance from the road. I think I’m happy with this amount. Not sure if put more on the rear doors will help but haven’t taken the panels off to test for any resonance. Although I still here the engine and some low road noise.
BTW, want to add a dual dash camera with this deal.
There is BlackVue DR650s which comes out to 300+taxes after discount (separate account as 100$ is the maximum discount)..!
I just finished adding more Neico to the rear seat base and cleaned up some of the resonance from the road. I think I’m happy with this amount. Not sure if put more on the rear doors will help but haven’t taken the panels off to test for any resonance. Although I still here the engine and some low road noise.
Can anyone show me how to access the rear seat base? Step by step would be nice or detail instruction with pictures. I would love to add Noico there as I still have a few sheet left over from doing the spare tire well.
I saw a Crutchfield video of sound damper (dynomat) with sound spectrum of before and after. The mat decrease the low frequencies up to 1k Hz, but don't seem to reduce any higher frequencies. For higher frequencies, felt grade of SAE F1, F3, F5, F7 seem pretty good as it reduce the mid and high frequencies (from 500 Hz upward).
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we drive on!
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