Ive ridden mine on the road a little,down some of the best sportbike roads aroung here in norcal,I can easily see why guys put the super-moto wheels on them,It seemed to start pulling nice at 70 and Im sure it would buzz to 100,really smooth and fun for a dirtbike. The trails around here tend to be steep and tight,probably affects mileage compared to other areas,sometimes just getting up them involves lotsa work. I have done some pre riding for www.ironman dualsport.com,out in the Nevada desert we went 800 miles in 4 days,hot each day, on the bikes at 6 in the AM and finish in the heat. I lost 9 lbs that didnt come back. I rode my DRZe for that,came home and bought the 530,no mas wrestling a heavy bike in the rocks. Whats the name of your cousin's dualsport business?