Just when I thought I had most of the problems resolved on my car, I run into another issue

Ok so when I turn left (weight being distributed to the right of the car) it turns great, no problems. When I turn right (weight being distributed to the left drivers side of the car) it makes a creeeking sound, like a shock going bad. If I get out and push down on the car I can not re create the sound. In addition, all of my tires have very good tread left on them except the rear left tire, which has good tread except the OUTSIDE edge. I was thinking maybe when I made turns, the wheel was hitting the fender and wearing just the edge down.

Does anyone have an idea of what this could possibly be?

Thanks for your suggestions in advance!