What’s up with my tires?

I sripped down my Outlander to replace the brake pressure switch and grease the handlebar stem bushings and noticed my tires are delaminating.
I’m running the stock Carlisle ACT tires with 2600 km on ’em. Upon close inspection I found 3 of my 4 tires have the same delamination issue. This is actually delaminating of the tread. You csn see where definite layers are peeling/coming apart. The defect runs directly across the tread face (bead to bead) and appears no where else on the tire. It’s almost as if there’s an overlap seam in the carcasse and its coming apart.
Has anyone had this issue with any tire, ever?

Attached Images
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File Type: jpg 20160517_190441.jpg (2.77 MB)