I keep hearing this really loud grinding sound on the passenger side of my car.  I had to change the brakes earlier then usual because the ones on that side were grind all the way down to the piece itself (there was nothing left).
 
Sounds like a wheel bearing(hub assembly) ....does it go away when you turn?
--04 Blazing Copper Mazda 6 s
 
Whenever I turn the wheel to the left, it goes away.
 
Yeah....typical of a bad wheel bearing.  My cav does the same thing now...I need to get it fixed.  
--04 Blazing Copper Mazda 6 s