sound proofing

[Rsx_03 10+ year member]

i took of my back panels off my hatch, theres 4 big holes that expose the rear fender walls, i put deadening and ensolite in it, i cut sheet metal to put over it.

what can i stuff the inside with, will AC insolation work? or expanding foam.

my rear tires have a lot of road noise, im going to buy a new set soon.

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[audioholic 5,000+ posts]

Yes, expanding foam can work very well, so long as you take the necessary precautions to avoid it expanding too much and popping out body panels. If that concerns you, find some good closed cell floam (carpet backing perhaps), stuff it in the space, and mat over the holes. Insulation would work also, but a closed cell foam would be better.