I am getting some very odd wear on my passenger side front tire and I am suspicious that might be the ball joint.

How do you check if the ball joint is bad?

I jacked up the car on both sides and grabbed the tires at 12 o'clock and 6 o'clock. I then tried to rock them back and forth and they moved a little and it even sounded a bit like a "click" when I did so.

The passenger tire is wearing much more than the driver side.

I am getting excess wear on the inner half of the tire and some slightly irregular wear on the center bead.

These tires have "wear indicators" that show if you are having uneven wear issues.

The driver side looks fine but the passenger looks screwy all around.

__________________
1993 W124 300D
-297K on the clock as I type this.