Okay at the risk of sounding like an idiot, I have a question about fuel mileage. I am new to the four stroke thing so go easy on me. I just bought an '06 YZ450 and race cross country. It was my understanding that thumpers typically get better mileage than smokers but this past weekend I had an issue with running out of gas. The course that we were running on was pretty wide open and very fast (4th and 5th straights) and very sandy. I realize that this will diminish mileage but I estimate I only ran about 25 miles on a stock tank (1.85 gallons) before running out. Does this sound right? I had several people tell me I had a problem somewhere but, the bike ran to good to have any mechanical issues, besides its brand new. Any thoughts?????