humming noise from front

got a humming noise coming from front of a 2005 4x4 tacoma.the humming increases with speed. it also gets louder the faster i go. it dissapears when i turn slightly to the left and reappears as i straighten out. I have stock rims. my tires do not have any cupping and there are no oil leaks. any ideas?

 

I got same deal too, too include year but mines when I turn right instead of left. I thought it was the cv axles cuz I drove about 5k miles with ripped boots Øn both sides. I replaced them and its still there, no change. I'm leaning towards wheel bearings and there next to be done when I can. And if its still there after those wheel bearings then its prob the front diff. I forgot the part that's haywire in the diff but I know east coast gear supply sells the fix.

 

Sounds like a wheel bearing.

 

Thx got it fixed... was the hub.