Squeak after 10-20 minutes of driving

[Explorer/Stang]

Hi, I have a 96 explorer xlt/ 4x4/ 4.0 liter. The problem is after about 10-20 minutes of driving i hear a squeak coming from the front. My ball joints are new and brakes are fine. I checked everything & I cant come up with anything. Know my buddy said he had the same problem and it was his front axles. I checked the CV boots and everything looks good no tears in boots. Any Ideas would be greatly Appreciated. Thank you in advance.

 

[Explorer/Stang]

UPDATE : Know it squeaks right away, as soon as I drive. Any Ideas where to check next will be Greatly Appreciated. Thank You

 

[corkey]

front wheel bearings,, ??
did you check them, ???
front brakes ?