Yeah, they constantly go in and out. And every time they come back it's a different part number.
I haven't used it, but my Costco person said there is no tire mileage pro rate if something happens to them. It's full replacement. I can only imagine this is a loophole because the expected mileage is so short.
Edit: they not available now for me either. When I try to add them to my cart there is a webpage error. Item # 1577053
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