Originally Posted by khager
While they are annoying, I do have to admit when I hear that low rumble over my own bike, and feel the vibration while going down the FWY I look around and usually spot offending Harley/Cruiser nearby. So if I can hear it thru my earplugs, who knows some cagers might even hear it, look around, and see that there is a M/C in the area.
That is the primary reason I voted yes. Also the Powermax pipe on my Sprint is fairly loud, and while I don't think it helps in a 180 degree situation with oncoming vehicles I think it is logical that cagers (use logical and cagers in one sentence, neat trick) do hear louder bikes and look around.