1) jack up the car to see if there is any play to the wheels
2) while driving , steer left-right , the noise should amplify or go away for a moment . Usually there's more wear on one side of the bearing than the other so depending which way you steer , there will be more pressure on one side or the other of it . More pressure on the worn side = more noise .I know you said you've checked that , in my case it did work when had a low kinda grinding noise , you may have just an early stage
2) while driving , steer left-right , the noise should amplify or go away for a moment . Usually there's more wear on one side of the bearing than the other so depending which way you steer , there will be more pressure on one side or the other of it . More pressure on the worn side = more noise .I know you said you've checked that , in my case it did work when had a low kinda grinding noise , you may have just an early stage
http://www.youtube.com/watch?v=xNwAb4Y4BNw&feature=related
http://www.youtube.com/watch?v=k6Y2aexChGs
03 Ford Focus SVT
"If in doubt...flat out". -Colin McRae
http://www.youtube.com/watch?v=k6Y2aexChGs
03 Ford Focus SVT
"If in doubt...flat out". -Colin McRae