My 02 carb. W/G has a 5.2 gallon tank with a 1.1 gallon reserve . Running Shell mid-grade 89 octane I have gone 206 miles before turning on the reserve , mind you that's some easy riding 45-60 mph cruising on back country roads while enjoying the scenery & smelling the roses ! I usually average 47-48 normal around town getting on it & showin off , blippin the throttle and rackin the straight drag pipes . LOL !