Been riding a Sportster with no windshield and a 3/4 helmet for years with no problem. Bought an '06 Street Glide, and headed out on a 300 mile highway run with that insanely short (4") windscreen it came with. Needless to say, my ears were ringing when I stopped. Bad news is they've never recovered. I'd had slight tinitus before, but it's doubled ever since that ride. I've since gone to a 9" Clearview shield with the recurve feature and custom ear plugs. Now, with the plugs, I get more of a reverb, oilcan type of effect when riding, but I know it's protecting my ears (what's left of them). When I ride the Sporty, it's much quieter. I'm guessing that it's the even distribution of air vs. the channeling the EG's fairing does to throw it all at the top of your helmet. What do you all think? Would an open face, 1/2 helemt be quieter? It seems to be wind noise more than exhaust (Rhinehart True Duals).