Geez, I would love to get 6-7 k on set of tires!! I get about 3500 if lucky!! Back wears quickly, front might go 4500, but always change set together. I am on 3rd set since June!! I don't know if it is Fla pavement or my riding skills, or combo of both. I have discovered that if I lower PSI slightly from Factory setting in both they last longer at 100+ speeds. I need to make friends with someone who owns a tire store!!