to test bearings, you will need to remove the wheels, pry the brake pads away from the rotor, and then spin, you may even need to remove the calipers to test.
one thing you can do is, grab the tire at 12 and 6 oclock, and pry feeling for play. you should not be able to feel any. if you feel ANY play, you have too much, and you should pull the calipers, and the hub dust cover, and adjust the center nut to .0005ish with a dial indicator... wouldn't hurt to inspect the bearings and grease, and see if replacement is needed.