I have heard all of the rumors about only getting 1500 miles out of just about any knobbie dual sport tire on the market, but I would like to say that I do not ride like a slug and most of the time ride it like I stole it. I do about 50/50 dirt/street riding ranging in elevation of 800 to 7000 feet on a weekly basis. I still have at least half of the tread on the knobs left. I also would like to mention that when off road I ride in a lot of harsh rocks, logs, roots, and so forth, I am just about ready to get another set because winter is coming and I will need the extra tread for the mud and snow. This has been my 2 cent review on Dunlop D606's. I give these tires a 5 out of 5 for great performance on all terrain and long life. They are also fantastic when you get a flat. I did not even know I had one for about 20 miles until I took a high speed corner and felt some wobble. Have a great day and Braap,Braap,Braap!