Went a run yesterday, two up, took it easy as wife's back was bad, never over 70mph really. Got 221 miles on the main tank before the last bar and the count down. Average mpg says 63, 8. 246 miles and still 24 miles left on the count down. Impressive for a big bike, that's better than my triumph tiger800 ever did.
But that said it'll probably be half that next week as of to the TT!!