I get a little baffled when people buy $50+ tires and say how great they are that they're only just starting to fail at 1500 miles. I've bought $15 tires that lasted 3000. My just plain old Marathons lasted 4500 on the back and the front is still going and looks almost new at 6000. Maybe riding a loaded touring bike wears them out that much faster, but I've read journals of people who rode 5000+ miles per tire while fully loaded.