Sounds like a problem I had with my favorite tires. Three out of three that I bought at the same time had the tread delaminate, leading to blowouts and long walks. I figure they had a quality problem in their production, and bought different tires for a few years to let those funky tires work their way through the supply chain. Then I went back (I really do like those tires and their price!) last year, and I've had no problems since.

FWIW, I found Black Bibs last summer. Averaging one ride a week per pair, that's about 25-30 launderings each since then with no problems.