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Here is how I diagnose wheel bearings. This method never lets me down. Jack up both front ( or rear ) wheels. If the car has struts with springs, grab hold of one of the coils, and spin the wheel as fast as you can with your other hand. You will be able to "feel " the roughness in the bearing, and the spring seems to amplify it a little bit. If you cannot get your hand on a spring, then grab the steering knuckle or upright, hold it firmly and do the same thing . You can also use a mechanics stethoscope to help you pick up the noise .
I have been doing this for years, so I know exactly what a bad bearing feels like, but if you are questioning yourself, just compare it to the other side. One will be smooth as butter, and the other will feel rough.
If it is awd, you need to jack up all four wheels, and usually run the car in gear, and just be SUPER CAREFUL, and try to grab hold of a spring or upright. The bad bearing will be evident. You could easlily rip your arm off here if you do something dumb.
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No left turn un stoned
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