Need some expert advice please:

Driving down the highway.

Get a super high-pitched metal on metal squeal that sounds like a dog whistle. It is faint, not loud.

Does this whenever taking a right-bank or left-bank curves at highway speed. No noise on straight stretches. No noise on 30mph slow speed curves or turns.

Checked the brakes and pad wear sensors. Pads at 90% (since new with 60K miles on her). The H2 will wear out before the pads do.
So it is not the wear sensors. Rotors are clean and smooth too.

The noise is only there when either side is loaded up during the curves. Does not sound like CV clacking. Can not tell where it is coming from, but suspect the front end (as opposed to the rear of the vehicle).

I am guessing front bearings? Is there anything else that could make this type of noise at highway speed on curves? Rear bearings?