That would be my first guess,hub bearing, which is actually 2, inner and outer inside . I have found that hub bearing create unwanted noise about 40 miles per hour, going or steering left to right puts the load on either inner or outer. Hope this helps but you already figured it out.

 

If a 4wd, you could try putting it in 4wd, and see if the noise goes away, and report back.

 

OK, I'll give it a whack. The noise seems to be coming from the lateral aspect of the car, as in wheels, rather than something located in the middle of the car.

 

Was thinking maybe its that infamous differential axle needle bearing thats located on the driver side if a 4wd.

 

New Information of the symptoms: I noticed that once I get the speed up to about 50, and press on the brakes hard, I feel a vibration coming up through the the pedal.

So, in summary, a growling sound that goes away with right turns, extra heat coming from the left hub, and vibration coming through the brake pedal.

Diagnosis? I'm listening. Thanks, fellas.