Quote:
Originally Posted by Cheech
There's an app for that!! 
Did exactly what you mentioned. After installing the sound deadening liner in the rear hatch the level of noise in the cabin dropped 10db (using the iphone, same stretch of road, same speed, dry road. |
Here is an interesting site that lets everyone hear what various db levels sound like..I wonder how much more you get with quieter tires?
dB: What is a decibel?
PS I just listened to the sound graphs..the math was not something I cared to deal with..