I had 265/70 R17's in both BFG KO's and GY MT/R's and 255/75/R17 in both GY GSA's and BFG Mud Terrains and in both cases I moved from AT to Mud/Rock tires in those sizes and in both cases there was a small amount of rubbing on the latter that needed to be addressed that wasnt with the AT's leading me to think the lugs on them are taller then the AT's.