These are the factory set, bought the truck last year with 26k on the clock. Closing in on 49k now. Just never saw a set crack this bad. Wondering if it's from the non-use that the truck got from the first part of its life. Not terribly worried about them, like I said I'm changing them anyway. They have a little life left in them tread depth wise, just want to swap before they get any worse, and while all the spring tire rebates are going on.