Tiburon noise

      

    Hi

 I have a 97 tiburon and it makes a noise that sounds like a wheel bearing going out, it starts making this noise at around 25mph and gets louder till about 50mph then stays the same on up it kinda goes away when I turn to the right. After driving for a while I felt the hubs, they were not hot. I jacked the car up ,spun,pushed, and  pulled the wheels and nothing makes any noise

  Any idea where this noise is comming from?