My wife complained that her Model 3 was louder or had more road noise than my Stinger. I didn't believe it so I downloaded the Sound Meter app for my phone and measured the sound in her car and my car at 55 mph over a period of time. With my car that is stock with winter tires averages 60dB while her Model 3 averaged about 61dB. Which is interesting as her car has virtually no engine noise, but a ton of wind/road noise. Anyways that brought up an interesting idea, everyone wants to hear what a certain exhaust or car configuration sounds like. Why not measure it with a sound meter to have an idea how loud different exhaust configurations are? So, lets measure our ambient noise at 55mph averaged over several minutes, 70mph and 80mph. Post up your noise levels, and your car's configuration. I know that this isn't a perfect experiment.