The most I got from a standard tank was the first day I had the bike. Topped off at a gas station across from Martin Motorsport in PA and rode 170 mile non-stop to Alexandria, VA. Picked up the machine and my wife drove the car home. I didn't think to tell her before hand to pay my tolls and stop for gas at about 100 miles.... so she didn't. At about 140 or so hit reserve. Then rode reserve until I couldn't stand it any more and finally pulled in for gas 15 miles from home, with 170 on the odo so I was getting at least 40.
I did run the tank dry once, unintentionally. Reserve got me 10 (ten) miles. I don't how it happened (well... it used up all the gas, that's how it happened). I've filled up with gas at least twice in my life so I know what a full tank looks like and was expecting at least to be able to get to a gas station 5 more miles down the road. No such luck. When you hit reserve, don't pass gas!