I am amazed at how many miles some get out of tires. With in the last three years I've put pairs of Michelins PR4's on a 650 Strom, BMW R1100RT, and a Honda ST 1300, all were kaput at between 6500 ( ST Rear) and 11000 ( Strom Front). While they are great to mount and balance, easy to de-mount too, the volume of the front singing as they get older is annoying to me. Great tire I admit, tremendous feel, good in driving rains, and a bit more expensive than the Bridgestone's that usually buy and get the same mileage.