Acoustic Mat - Anyone installed?

[BretL]

My G80 is very quiet and as some reviewers have said, 6db quieter than a Mercedes S @80mph. That being said...I recently put Kilmat 80 mil in all 4 doors of my Denali and WHAT a difference it made for noise, ease of conversation, and the Bose is even better. I put 3 sheets on the door in the back, 4 in the fronts, and strategically placed some Kilmat on the door panels.
So, I am very seriously thinking of doing the G80, just wondering if anyone has done it and was it worth the trouble. I have all the proper door panel tools. TIA

 

[Bill in Alexandria]

I'm GOING to do that, but I believe there's already sound proofing in the doors. In addition, I sound proofed the trunk (which helped with exhaust noise and tire noise, but it's in preparation for a new subwoofer in the rear deck) and will also take 1/8" thick 1 lb MLV and place it between my mats and the floor both front and back. People who are REALLY neurotic will also pull the rear seat out and sound dampen under that and undercoat the wheel wells.

It IS a very quiet car, and I usually have the stereo going anyway, but every bit helps.

 

[Aquineas]

A lot of noise comes from the wheel wells and where the spare tire is. If you lift that carpet up in the back it's bare metal, and the carpet helps a bit but I believe a lot of sound comes in from that cavity.

In any case, maybe this site would help. Here are couple of useful search results I found on Dynamat and cheaper alternatives and where to apply it:

How to Quiet Road Noise in a Car - Soundproof Expert

How to Soundproof A Car & Reduce Road Noise - Soundproof Panda

 

[ZEPHCRAFT3]

I just upgraded my audio system in my 2018 G80 sport. The only place I really needed to add sound deadening was in the trunk. I added fatmat to the spare tire area two sheets to cover that entire are where there was bare metal. Everything else had pretty good soundproofing already and after installing my SQ audio upgrades I have no rattling or road noise. I replaced the front door mid bass and tweeters as well as the mid ranges in the dash and added 2 JL audio 10W6's in the trunk. Also installed high end Helix DSP to control the speakers and subs. I installed Legatia high end SQ speakers in the doors and dash.