bully, I've still got the OEM Dunlop on my KDX, however, I rode with a guy on a KTM this past weekend that was running an IRC Volcanduro(sp?) and that dude was hooking up like mad. I guess the tire is for intermediate to hard terrain, but from my position (slower and ducking the mess he was launching at me) he didn't have any trouble in the soft/loose/silty stuff either. I'm thinking about switching over to it myself. Also, the cost didn't seem too bad either, around fifty bucks at rocky mt. mc. I believe. Good luck.