+1 on the mileage comment
I have a 16T front sprocket and I ride with my Givi bags and Shad top case just about all the time. I also have a Givi windshield.
At an indicated 110 kph - which is probably closer to 100kph (63mph) actual -I can easilly get close to 375 klm out of a tank. But......with the 16T the bike is very comfortable between crruising along at an an 135kph - 140kph, which is probably a true 125kph or approx 78 mph. It just seems to want to lope along and keeping the speed down is tough since it's so smooth. But at 140 I'm pushing it to get 300 klm out of a tank. I'm more than willing to put up with the drop though, in return for the fun factor
"Far better is it to dare mighty things, to win glorious triumphs, even if checkered by failure, than to take rank with those poor spirits who neither enjoy much nor suffer much, because they live in the gray twilight that knows not victory or defeat."