I have a 2002 Dodge Caravan and a few months ago I noticed a rub noise while turning right, not metal on metal, just a friction type noise. This morning the noise was louder and while driving straight, plus there was a bonus noise, which made me think of a rock in the wheel, however it was a high pitched noise, so it would have to be a steel rock. Any ideas. We're thinking the bearing/hub needs to be replaced, but could it be something else or is that the best place to start?