When our car is parked and stationary, and I turn the wheels left or right, there is a point while turning that I hear a thunk. I can feel it slightly on the steering wheel, but more so on the tranny tunnel.

I do NOT hear the noise when moving either straight or turning.

Is this wheel bearings or control-arm bushings noise (both original, approx. 110K miles) ?

I jacked up the front and pulled on the front wheel and it doesn't seem to move, and when spinning it, it doesn't make any grinding sound.

What should I do next ?

TIA,
:-) neil