Update: I pulled the front wheels off to look at the pads. These are all guestimate measurements based on my measuring the pad backing plate thickness at about 5 mm. The right front pads are equal in material left, and have about 8-9 mm of friction material remaining.

On the left front caliper, the outside pad has about 2-3mm of material remaining, while the inside pad has about 9-10mm of material.

Given the differential wear on 1 caliper, I am going to have the dealer take a look at at.

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'07 Cayman S, '98 M3 daily driver/track toy, '04 Wrangler