front, driver humm at 19 mph

Need some ideas here all.

I suddenly began having a humm (no vibration just noise) come from front driver side wheel well right at 19/20 mph. 18 mph nothing. 21 mph nothing. I thought it was alignment so went and had it aligned. Still making the noise.

My BGF ATs were getting worn (45k) on them so just had my duratraks put on today. Still making the noise. Thought it was just the tire tread wear.

Any thoughts? again only driver side.

Other background: full 3" OME on front (885s plus 1/2 top plate spacer for full 3".

Thanks for any insight.

 

Not sure why or how.

read some other forums on this and thought I would see what happened when I ran it in Hi 4WD.

Switched to 4 Hi. and no noise at all.

Switched back the 2 HI and GONE no more humm.

whatever.

 

I work at a yota dealer had the same problem on a tundra and drove it 4x4 noise no longer present just weird crap that's for sure