Has anybody used any of that spray on rubber undercoating in the wheel wells. My rear wheel wells already have some but I am thinking about doing the front and re-doing the rears this spring to try and get rid of the tire noise.

 

It works. Your talking about the crap they sell in a spray can right? My shop teacher said to heat it up ahead of time to make it spray easier, just run it under warm water a little bit to get the stuff softened up.

 

Will it help in cutting down the tire noise in the interior?

 

Probably not much and it's pretty messy.

If you're serious about cutting the noise, the dynamat the interior. It's not that hard and if you have a full day, you can probably get a lot done.

 

That was one of the first things I did when I picked up my car new. If you live in the rust belt area and drive your car daily or in any weather, this is a must have.

Although the factory has improved anti corrosion protection on american cars, in time continued exposure to salt and harsh weather (coupled with gravel or loose hard debris) will start to chip away at galvanized coatings, and you will end up with some rusting. The undercoat greatly helps shield sheet metal from rust causing elements.