I have almost 10,000 miles on my KM2's and have had them on my truck since they first came out last year in Sep 07. I believe with proper inflation, rotation and obviously alignment 40,000 miles would not be difficult to achieve. Link to a little update I wrote on them after a year of ownership http://www.f150online.com/forums/whe...port-km2s.html

Just wondering about the tread life so far on your KM2's. I hear they wear out quick? What do YOU think and if you don't mind me asking, how many miles on them?