have a constant squealing that starts about 25mph and quits under 25mph

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the squeal is constant above 25mph, the pitch does not change with rpm. the noise does stop when under 25mph. the noise can be heard echoing off other vehicles, buildings ect... also has a rubbing/grinding noise when making a right turn, coming from left from wheel. im thinking wheel bearing but could it be something else. i already checked drive belt and brakes for possible issues causing the squeal. also wind noise i checked for. this noise is a constant squeal above 25mph and the pitch does not change due to rpm increase or decrease. it also does it if put into neutral while driving as well as turn key off while driving (not suggested to do this tho) but anyway regardless the squeal is still there even in neutral as well as engine off just enough to have controlled steering. no check engine lights or nothing of that nature... any help or ideas be much appreciated. Thanks! Russ