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Not much more (if any) over 40. I've done tons of real-world research and you just can't get much more than that.


Can and do get more than that. I must live in a different world than you. My 03' got mid to high 40's, and even with a PCIII installed with "rich" maps, I'd average 42-43 mpg. These figures were derived from a combination of interstate (75-90mph) and twisty mountain runs. Those #'s are consistent with my 05' as well. Regional fuel formulations are one of the many factors that will effect one's mileage. Depending on riding style and climactic conditions, I've seen FJR's getting anywhere from 30 to mid 50's.