05 GX 470...no KDDS...100k miles

When I've been driving a few miles, I feel a pulsating when breaking feeling like it's coming from the front (front left if I had to guess). I put in new rotors and brakes in the front, turned the back rotors and problem still persists, no improvement.

I'm now considering the hub-bearing. However, when I do the standard-check (lift wheel and apply stress from top/bottom) there's no indication of a bad hub bearing.

The problem worsens as I drive faster. When on the highway, if I start to turn the wheel right 'then' brake...the steering wheel pulsates bad. When I turn the wheel left 'then' brake, it's not as bad...but still noticable. When I start pressing the brake pedel 'then' start to turn the wheel right it's still there but not as bad compared to applying the brake after turning.

Can anyone let me know if this is a true hub-bearing issue before I spend the cash/time?