Humming front end help plz!

[Timg]

Just bought a 2000 explorer sport...had one bad front wheel beating changed em both to try to fix this humming...can't hear it on the highway until I start slowing down but can hear it on side roads at lower speeds...cv's look good front diff didn't need a bunch of oil back diff took some....doesn't hum while not moving..u joints between front diff and driveshaft look good....anyone got any idea what this could be...will link a video later to try to show what it sounds like...any suggestions on what I could check would be helpful...thanks!

 

[koda2000]

tires maybe?

 

[Dave 1955]

Could just be a little gear whine.

 

[jremington59]

swap the tires around. A broken belt can whine pretty good.

 

[drdoom]

Yes check the tires and make sure you have a matching set.