I don’t know much about physics and aerodynamics and all that jazz, so I’m just curious how effective are the windshields on motorcycles? Was kinda wondering if they’re actually useful for redirecting the wind while riding, or if it’s more for safety from debris that could get thrown up off the road?
ETA: Thanks for the replies, and for entertaining my curiosity!


For riding long distances at highway speeds, I’d consider them essential. I remember when I was riding my naked cruiser for a 3 hour interstate highway ride just how physically exhausted I was at the end. The buffeting of the wind against your chest means you have to hang on tighter to handlebars. If you crouch down you get less wind, but now your body weight is shifted to your wrists and back, so up you go again to get buffeted by the wind. I stopped doing long distance interstate highway rides after that.