I put 48k on a set of 265/70/15 Revos and put a staple through a side wall. Of the original 13/32s there was still 7/32 left. They are an AWESOME tire. Quiet, Great traction both on and off road, and wear very well. If the tire starts making noise, its time to rotate.
My new tires... 31x10.5 Revo's.