I don't know if the noise is bearings, but the wheels have too much play. I need to fix this then focus on the noise, unless I get lucky and bearings fix the noise. It could be the tires, but I've never known tires to cause conditional noise. I only get noise under very light throttle. Tires always seem to make noise all the time, maybe only above a certain speed, but throttle doesn't usually affect them. Was this not the case for you??? Can you describe the noise you had? Are these the same bearings you've been trying to get rid of for a few years? $50 for the pair?