When the wheel cools off take the wheel off the car. Then remove the dust cap, the cotter pin, and wiggle the bearings out and inspect them, for blueing(which is burning) pits, any scoring. If any of these are present the bearings, and races will have to be replaced. If you have never done this procedure before dont do it . Take it to your fav. shop and have them do it for you. Visit my web site for more info at www.brothersauto.vpweb.com