I was interested in determining the mechanics of sound deadening. I installed a new Dishwasher this weekend. My wife was less than pleased I chosen a $600.00 model vs $1500.00 model even though I had researched the noise difference was very little, to justify the price difference. So once again 2 weeks ago I decided to go the less expensive option, I chose new Snow Tires on New Rims from a local supplier versus the Tesla option, thereby saving $700.00 CDN. Now on to the real story: I had a chance to have a closer look at the wheel wells while the existing wheels were removed, while the car was on the lift.The crap Tesla installed for sound deadening in the wheel wheels is almost criminal. The installation of the material was an afterthought, as if to say "Bimbos that buy this car will ever look here". In most instances the liner is not even fastened to anything. Snow and Salt can easily get between the liner and the steel frame of the car. Even if you take your garden hose in the winter and properly wash the wheel wheels, like I'm used to doing, you may not be able to remove all the salt that becomes trapped between the liner and the car frame. Elon, put this on your do list: "Look under the wheel well of the Model 3"