Check tension rods and ball joints and tie rods with front on jack stands then get your jack and load the suspension by lifting from the control arm, try wiggling the tire first up and down then right to left, if you feel to much play or hear a noise then theres something wrong in your suspension or steering, now try doing this and looking for anything that is moving more than it should(someone to help you makes this a lot essayer). If not there it may be a out of balance wheel or bent, try changing the wheel to the other side of the car or to the rear. Or your rotor is warped. Make sure you torque your lug nuts evenly. Shit if you really can't figure it out, fuck it swap rotors from one side to the other if you can't measure them for runout.
