two people have voted <90 miles. If you can't get more than 90 miles without running out of gas, something is wrong. That's less than 27 miles a gallon. I get 40-50 miles per gallon, depending on my riding habits, and I think I'm on the low side and that I'm losing efficiency somewhere.
Using Ethanol blend fuel is another mileage factor too..I've noticed less overall mileage with ethanol blends, but I try to use name brand filling stations when filling up, none of that cheap shit from Sam's Club!
I'm gonna hold off voting and maybe on my next tank actually wait till I hit reserve. I tend to fill up well before I need it, just to make sure I always have gas in the tank. I have gone as far as 120, though, and still had about 0.9 gallons left in the tank based on what it took to fill up.