2002 Chevy Tahoe Front wheel noise

For about two wheeks I have noticed a noise which seems to be coming from the right front wheel area. Braking does not affect the noise itself, but it is speed dependent. In other words, the pitch of the noise rises with increased speed. It sounds like tire noise, i.E. Not a metal/grinding sound. The tires (Bridgestone ATs) have about 60K miles on them but appear to be OK, proper inflation etc. The steering wheel doesn't seem to have any excessive pull, but I do feel a high frequency vibration coming from the noise. The noise does seem to improve when I turn the wheel to the left and returns as soon as I straighten the wheel.