They are doing ok. I've got 17K miles on the them and I'd say the fronts are at 40%. I say ok because they are doing as well as any other tires I've had. Rears are probably 70% but I have always gone through 2 sets of fronts for a set of rears. Last set if tires were 235 Toyo M-55's and got 40K out of the rears and those lasted the longest. Probably could have gone longer but the second set of fronts were done. The KM2's should get to 30 or 35k I'd guess. These don't have the "snowflake" either which may mean the compound is harder. A buddy has snowflake KM2's on his f450 and at 23K-ish he's getting ready to replace them. My rig isn't a daily driver so I'm ok with how they are wearing.