Where does most of the tire noise enter the truck?

My tires are fairly quiet on smooth asphalt and quite noisy on grooved concrete. Most of what I hear seems to be from the front tires. I would like to install some insulation material without making a huge project out of it, so where to install insulation to get the most bang for the buck? I would like to avoid removing door panels. I am thinking most of the noise comes in through the floor and where the carpet ends under the dash.

I hear a lot about Dynamat, but it is quite expensive. Any alternatives?

I just bought the tires so changing them is not an option.

2008 Tacoma TRD off road, Access cab, 4x4 V6

 

Removing the door panels is super easy and will probably help out the most for noise deadening.

 

turn the radio up

 

Buy a rolls Royce if you want a quiet ride.

 

Rolls Royce sound mod

 

I would say it comes from the windows being the thinnest material separating the inside from the outside. Good luck insulating that lol

Check out the audio section. You can put sound deadening stuff in the door panels

 

I have an '87 Trans Am that I installed Fatmat in, I put it in the doors, in the hatch area, and under the carpet. It did make the doors sound a little more solid (less tinny), but as far as reducing overall noise... meh.

 

Some Tacomas had firewall insulation:
https://www.tacomaworld.com/threads/firewall-insulation-part-numbers.452268/

As far as I know, the Tacomas never had hood insulation. 4Runners did, but you would have to find a model that used the same hood as your Tacoma. Another option would be to buy generic fiberglass hood insulation and install it yourself.

 

Did some more test driving and now think most of the tire noise is from the front tires and it comes in through the windows. Below 35 mph I hear no tire nose if the windows are up. With the windows down it is loud. As I drive faster, the tire noise increases and it is the same noise, just louder, so it is not engine noise or wind noise. Also driving on different surfaces produces a different sound at the same speed, so it is definitely tires, not engine or wind noise. I cannot think of anything to do about the windows so will have to live with it.