Funny how everyone starts throwing out different tires. I have 19000 miles and more than 1/2 tread left. How in the world do our think you need new tires. You said you haven't check, kind of impossible not to notice with a duratrack tire. You must get 8 mpg and shred tires everywhere you go. If that's the case that truck won't last long either. Put same tires back on, they're awesome.