Dont have the spec they are at after the drop. I started off rotating the tires every 3000 miles when I was at 12,000 (when I got the rims/tires new). The front tires that were just replaced had been on the front for 6,000 miles straight (been to the drag strip a few times in that strech too). I'm not worried bout the wear, its the uneven wear I am concerned with. two thirds of tire still had good tread.