After finally wearing out my Avon Speedmaster front tire on my G5, I replaced it with a Dunlop K70, 3.25 X 19".
I gave the wheel bearings the 'once over' and they turned smoothly without any apparent looseness or rough spots so I left them installed.
I notice that if I'm riding at speeds of 45-55 mph on a smooth asphalt surface the K70 is nice and quiet.
If I am turning a long sweeper at those speeds there is a definite 'hummmmmmmmm' coming from the front of the bike.
This happens when I'm turning right or left at speed.
I think what I'm hearing is just the rather aggressive tread capturing the wind and making the noise. Am I right?