Front or rear either one, but it sounds as if not the tire wore out, but the hub stripped out which is caused by not checking wheel nuts every run.....
a small dab of blue locktite works well to keep them from loosening even tho they have nylock in the nuts....
Yeah it was like this when I bought it. I'm running the Hott Racing 17mm hubs with the serrated wheel nuts now. There tight.... I just want put the newer tires where they'll wear faster to catch up to the older ones.
Ya my XTM MMT has no nylock in the 17mm hub/wheel nuts, I use locktite blue and even under heavy bashing my wheels stay on. I put it on when I clean and prep for next runs, and let dry well.... I have to use a 3/8 drive ratchet to remove my wheels but they stay put always