What, 45 - 50 mpg doesn't do it for you? That's what I'm seeing on my R12RS with only 700 miles on it.
I'm coming off a K1300S where I was lucky to get 37 - 40 mpg. And that was burning Premium.
That would be in comparison to my F800GT. I got 58 - 61 mpg. I'm averaging between 45 and 48 mpg with 3,000 miles on it. I expect the mileage will settle in at around 50mpg. It's better than my K12RS. I got 40mpg on it. And about the same on an '87 K75RT.