DYNAMAT 10435 EXTREME DOOR KITDYNAMAT 10435 EXTREME DOOR KIT Stop Vibrating Sheet Metal and Road Noise When driving, the body panels of your vehicle vibrate and create noise. The faster you drive, the louder that noise will be. At 70 mph, a typical automotive noise level reaches 85 dB. This will interfere with the sounds inside your vehicle, like your stereo, cell phone calls and conversations by affecting the dynamic range of these sounds. If you want your music louder, you can