I turned my 250 X-6 Suzuki into a dirt bike by stripping the fenders off it and putting on knobby tires. It worked well both on the street and in the dirt. My friend had a new 185 dirt bike that was street legal, and we went trailing all the time and rode our bikes to the trails. Neither of us had any problems riding on the streets. That said, I'm surprised that one of you said dual sport bikes don't do either dirt or street very well. If you go into ADVrider.com, you'll find that almost all of them who take those long trips in the dirt have dual sport bikes. They seem to do very well. I'm tempted to buy one so I can also ride in the dirt. I know my C90T won't do very well.