'03 800 Classic - mostly stock w/highway sprockets (18/40 vs. stock 17/42)
I keep very close tabs and get 49.5 to 50.25 mpg.
However, rick is correct about odometer. I can't be certain about how far the speedometer is off, but I am certain the odometer is 5% "long" - given the nearly new 140/90 Michelin COMMANDER II currently mounted on the rear (different rear tires at different levels of wear WILL effect the odometer reading).
This would make "actual" results (when compared to another vehicle with a dead on accurate odometer) to be approx. 47.25 to 47.75 mpg.
Montani Semper Liberi
2003 Vulcan® 800 Classic - Pearl Mystic Black
National Cycle Custom Heavy-Duty Windshield
Mustang Two-Piece Wide Vintage Touring Saddle
Volar SissyBar/Backrest - K&N Air Filter
Viking Quarter Circle SaddleBags & SissyBar Bag
Scootworks Sprockets (18/40 - 2.222:1 ratio)
Baron 3" Bullet Tachometer - Engine Guard (black gloss finish)
Michelin COMMANDER II front 130/90-16 73H, rear 140/90-16 77H
EK X-Ring Chain, Deer Warning Whistles & BackOFF® Brake Module