Hi everyone! Last week the passengers side wheel bearing/hub assembly started humming. It got louder and louder so this morning I put a new one in. took it for a ride and THAT noise was gone. but now I have a rotational humming noise only between 28mph and 35mpg. any other speed it's silent. It doesn't sound like a wheel bearing cause when I turn and take the cars wieght off of each side the sound is still there, usually it'll change or stop. does anyone have an idea as to what this could be?