http://www.sounddeadenershowdown.com/

That one??

 

Yeah that's the one. Guess I was wrong about the asphalt being a good thing according to his research.

 

Nah u want Butyl i believe its called. I havent visited the site in awhile lol

 

All 4 of my doors rattle pretty bad, but I think it's the door panel itself. When I put pressure on the door panel the vibration stops. I guess that's something you can't really prevent. They make those things that go around the speakers though which cut out vibration.

 

Dynamat works outstandingly IMO!!!! Its kinda pricey but worth it when all is quiet till you turn you system up and you hear that first solid booooooommmm and then in that moment its all worth it!!!!

 

yeah lol, i got the dynamt on those 61/2 speakers, and on my entire rear pannel

 

the aluminim foil layer in sound deadening is the most important. The thick the better. I have the trunk lid in my car completely filled with expanding foam as well and it works wonders. Lead sheets ar ethe absolute best way to dampen any sounds but it is EXTREMELY expensive and adds a lot of weight. Lead is also not the safest to work with.

As for dealing with your bolts that like to loosen, use some thread lock on the bolts and you should be fine.