I agree with squarebore, I like to know how far I can actually go. Of course that varies and is effected by many things. When I got my Guzzi I ran it around near home and a fuel station that I frequent to see about how far a tank will get me. Of course, that changes slightly as the new motor wears in. Both times I ran out it was due to a combo of things, mostly me trying to make it to the next station. When I had to push it the fuel station that Google Earth said was 25 miles up the road was closed and looked like it had been closed for a few years. Ran out 5 miles outside of Parker, AZ, fully loaded, 3000 miles into a 4000 mile trip. Pushed that heavy beast about 100 yards and a pick-up truck stopped with New York plates and asked what was wrong. I said Moto Guzzi in their infinite wisdom and knowledge decided NOT to put a 9 gallon fuel tank on this thing, and cheaped out with a 8.5 gallon tank, so I ran out! After a laugh he dropped his tailgate and there sat 3, yes 3, five gallon cans of gas. He really wanted me to dump an entire can in, but I only put about a half gallon, (guessing). He wouldn't take any money either! Great guy! Going to mount a 1 gallon RotoPax on the Tenere for these instances on trips, plus the ability to Pay It Forward...Looking forward to a touch better fuel economy on the Tenere.
Still hoping someone will post up a pic of that hole in the filler neck...