The new bfg ko pattern the ko2. Is not lasting like the old pattern did. I don't know if they went with a softer compound or what but a heavy 2500 truck will eat them like candy. Some goes for the nitro terra grapplers in the new version g2. They used to be a could tire might still be on a light truck or SUV. I've personally seen them wear out under 20k miles on a 2001 dodge 4x4 2500. And 35k on a 2001 1500 z71 chevy. I'm running toyos AT2 extreme on my 03 dodge 2500 4x4 and they have been wearing great fairly quite with slight road noise around 75 mph and traction is great on wet roads and in the fields and pasture where it can get muddy.