Clicking Noise from Front - Need Help!

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I'm experiencing an annoying clicking noise from the front, the source of which is proving to be difficult to isolate. Noise first appeared last Fall just before car was put in winter storage. (I ignored it). Noise has become progressively more noticeable over the course of driving during the last several weeks. Originally, noise originated from driver's side and was only apparent on full right turns at slow speed. Noise has now appeared on passenger's side on full left turns at slow speed. No success so far isolating and fixing the problem. There is NO evidence of the tires rubbing on the fender liners. Here's some further background:

Car is a 2103 sport touring model with approx. 20K miles. Relevant aftermarket parts include:
Eibach front sway bar (installed Year 1)
SPL front end links (installed Year 1 … replaced last month)
DBA Series 5000 two-piece slotted rotors (installed Year 2)
Hawk HP brake pads (installed Year 2)
Advan GT front wheels (19 x 9 +35) (installed Year 5)

Attempted fixes so far include:
Lubricated sway bar bushings - no success
Aligned and fully tightened front end links - no success
Replaced front end links - no success
Re-balanced front wheels and rotated side-to-side - no success
Removed brake pads, caliper and rotor and inspected for signs of abnormal wear and any signs of rubbing … no success
Replaced driver's side wheel hub assembly … noise appeared to disappear from driver's side, but then appeared on passenger's side.
Replaced passenger's side wheel hub assembly … noise has now re-appeared on driver's side.

I've now run out of obvious options and am looking for input. A couple of other points:
The noise is most apparent after the car has been driven for several miles and the ambient temperature is high (80 degrees F or higher) … so it seems to be related to heat and expansion.
The noise is definitely rotational. It's a clicking noise that's tied to the rotation of the wheels.
The noise only occurs on full to near-full turns.

Any advice/suggestions on possible fixes would be much appreciated. Thanks in advance!