yeah put your car on a jack and shake the wheel from side to side. and if someone else is with you then have them look at the back of the steering knuckle. if there is movement when you shake it side to side then its more then likely the wheel hub. To rule out the tie rod feel the tie rod with one hand and shake the tire. if you feel play in it then thats bad if not then its ruled out. but from personal experience if you hear a grinding noise its probably the wheel hub.