These tire deliver excellent performance both on the street and in the dirt. They hook up in the dirt like true knobs should, allow me to pass sport bikes in corners (seriously), and are quiet for highway droning.
Their one problem is that the knobs in the rear are just too short and wear out in no time. The front holds up fine, but it would be great if Michelin could add a half inch or so to the knobs. At least they are less expensive than some other similar tires (606), so I keep buying them.