humblebrag? Why would that be anything special? That's not a lot of miles in the LD crowd. It was just a lot compared to the guy I was talking to. The point to him being I changed my tires several times a year, so his perspective/benchmark didn't really apply well to me. I'm a lightweight compared to some of those LD guys. I was doing multi-day endurance rallies where I might cover 12k in 14 days or 3k in a 3 day weekend. It was a time when I was house poor and I had to choose between riding less or finding ways to save coin on tires. Getting an old tire for cheap or deep discount was certainly one of them. I even ran some take offs that got tossed my way. Not race/track day take offs, mind you. I don't see people blaming the tire mfg, should they have an issue. The mfg has an liability out, stated useable life span, as others have mentioned. But, like the 'best by' dates on food cans, it doesn't suddenly stop being good at that point, it's just a guideline.