47mpg seems about right for steady riding . not much change if your cruising at high speed. riding with spirit 38mpg.
Last year i was cruising around 90 and ran out of fuel at 201 miles, its one big bike to push for 0.5 of a mile fully loaded, will not do that again. Riding with a multi strada which returned more to the gallon regardless of how we rode, a little surprised at the time.
The hyabusa returned over 60 mpg on a trip, great touring bike.
Fright of me life when in germany travelling over 180 and a big bug hit me helmet, thought i been shot, lol. Crazy country cruising at 150 and being flashed to move over by four wheel transport.