Occassional squeaking from front driver-side tire

Looking for some help in trying to troubleshoot and diagnosis an occasional squeak from the front driver-side tire (FDST) on my 2004 Echo (4dr sedan).

I have tried to figure out under what conditions I hear the squeaking and this is what I've come up with:

FDST usually starts to squeak after the car has warmed up.
It is not constant, but does seem to be consistent as a the tire rotates (as if it is the same spot(s) per tire revolution).
It is audible mainly during acceleration at low speeds (less than 50 km/h).
There is absolutely no squeaking or sound if I apply the brakes.
There is no squeaking at higher speeds (greater than 60 km/h).
I can pretty consistently reproduce the squeaking if I just slightly turn the steering wheel to the left.


I would appreciate ideas and suggestions.

Thanks!