It just started happening today. But when I'm moving real slow I can hear a moaning type sound coming from my front wheels. I wasnt turning when it started so I dont know if it does when I turn or not. Also I can feel it vibrating through my pedals a little bit. It only happens during part of the rotation of the wheels, not the whole way around. I was thinking wheel bearings, or cv joint. I have heard popping when I turn or hit a bump, I'm pretty sure thats the CV joint, could this be the same thing?