Try ear plugs. Whenever I ride my P-500 or Can Am Commander at medium or higher speeds, I wear ear plugs because I don't like the wind noise in my ears. With engine noise the P-500 is more quiet than the Commander where sometimes I also wear noise cancelling ear muffs. For me it makes for a much smoother quieter ride. A friend went for a long road ride with me (Arizona road plates) on the Commander and he tried ear plugs, said it was a much more comfortable better ride.