My lower control arm bushing was cracked right down the middle and there doesn't seem to be any slack anywhere else in the system. I believe that was the cause of all the wear. The rest of the tire was fine -- Everything but the inside had 7/32" life left! Quite a shame actually...
Since the camber/caster is non-adjustable, and I replace the lower control arm + ball joint...then the only other place that would make any changes must be spring sag only.

I ran out today and bought a Craftsman Digital level gauge. I plan to cut a straight 2x4 to the size of the rim and use that to measure the camber.

I don't quite understand caster quite yet on how to "check" it? Can anyone explain if there is a way I can measure it using the digital level gauge I got?

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2016 Monsoon Gray Audi Allroad - 21k
2008 Black Mercedes E350 4Matic Sport - 131k
2014 Jeep Wranger Unlimited Sahara - 62k
2003 Gray Mercedes ML350 - 122k