could be your wheel bearings
change your wheel bearing!!
it makes a humming noise, when you turn the wheel in one direction it will go away and turn it the other way and it will become more pronounced A bearing will ether make noise when you are driving strait and will stop when turning, or visa versa.
Not much info to go on but, it could be a wheel bearing going bad.
wheel bearing
Bad wheel bearing
Wheel bearing.
One possibility could be a bad wheel bearing.
Its most likely a wheel bearing.
check your wheel bearing
A failing wheel bearing is a likely cause.
Possibly a wheel bearing
most likely bad cv joints or wheel bearings. If the bearing is bad it will produce a loud whining noise the faster you go and if it is a cv joint it will make a clicking sound turning corners or when backing up with the wheels turned.