Tire Noise Reduction -- Any Experiences with Fender Liner and/or Fenderwell Treatments?

[Scrappycrow]

Y'all,

First off, this is not a generic "How can I make a vehicle quieter?" type of query asking for a complete education on the subject from zero knowledge. I'm fairly knowledgeable about the various products out there, how to use them, and I've successfully treated multiple other vehicles, but have done no work in this area on my '13 Tahoe LTZ. Before anyone asks: 1) the tires are Michelin Defender LTX M/S which are evenly worn, with about 1/3 tread depth left (and the noise doesn't change between tire rotations), and 2) all of the fender liners are intact and properly attached, the body panels and doors fit properly, and all of the seals (door and window) are in excellent condition. Wind noise is minimal.

So, does anyone have any experiences with using constraining layers (e.g. Dynamat) and/or absorption layers (e.g. ResoNix Fiber Mat) on the interior side of the fender liners and/or the metal portions of the structure? Did it make a noticeable difference? Any "not worth the time" feedback?

I'm aware of this thread, which doesn't cover my query. If there are threads that address this particular subject (fender liner and/or fenderwell treatments), I have not run across them.

Thanks in advance,
Scrappy

 

[Matthew Jeschke]

Not sure if I'd want to use Dynamat or similar style insulation on areas outside the cabin. I think that stuff is designed for use inside the cabin where moisture and elements are less of a concern. If just the plastic fender liners, might be okay to try. But on metal, I'd be reluctant. You could risk getting moisture trapped over time and degrading the metal. If you do do it on metal I'd be REALLY sure it's sealed well before applying anything to the surface of the body panel.