99 Grand Prix GT again, there is an almost constant humming noise coming from the front end at any speed above 20 mph. I'm assuming one of the wheel bearings crapped out, but I put the front end in the air and there's no play in the wheel on wither side. No play in the CV joints either. The tires on the car are cheap junk, but to be making that much noise I would think that they would be lumpy or somehow wearing badly, which they're not.
Any suggestions on figuring out which side is bad, or anything else that might make the same noise? I thought about just replacing both, but Napa shows $185 a side, so I'd rather not unless they both need it.