You should still be under the B2B warranty.The tires were rotated and the sound stayed at the same location so I am thinking it's not likely the tires. I'll have to have someone look at the wheel bearings. Seems pretty crappy if one of them is bad already.
As long as it's not the tire itself it's covered. I suspect you're correct that the hard part would be for the dealer tech to hear and find the source of the sound.Would this be covered under B2B? Something tells me having the dealer actually hear it is going to be a problem...