Curious. I took my first real ride with 10 miles on bike. I couldn't help but notice the howling sound that's present when I am in 6th gear at 60 mph. I noticed it here and there throughout the range, but steady at 60 in 6th. Is this totally normal for this bike? Couldn't be absolutely sure if it was from the engine, tranny, or just the exhaust note. In twelve other bikes, I never heard it and that includes my Triumph Triple. I was wearing a full face helmet with foam earplugs. What are you other owners hearing while riding???? It's not the tires, since it's not there at 60 until I go to 6th gear.