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About your vehicle.
That can very well be a bad wheel bearing. They go bad a lot of times without having any runout, (play) or wiggle in sthem. One way to see is to jack up the vehicle and listen to the back of the hubs with a stethoscope, (or a long pipe) while the wheels are turning, (with engine running).
Another is to see if the sound changes when you turn into and away from it. A bad bearing on the right side, (front) will be louder when turned to the left, (while moving) and subside when turned to the right. Visa versa for the left side.
If so then the hub assembly, (with bearings in it) would have to be replaced.
I can give you the instructions in a PDF file if you like.