I know a lot of guys like those, but it didn't work for me. I guess it was too wet here. Maybe I should have aired them down more. I ended up with a dirt knobby for the trails. For dual sporting I really like the Shinko 244 that I've been running on my XT225. I don't know how well it would last on a WR450, but it's been great on the little bike. Much easier to mount than the MT43 or the stiff knobbies are. They are very inexpensive too, so it would be cheap to test one.