My stock 2003 Road King 88(FLHRI) with Liberty Sidecar but with a taller windshield from stock (due to my hieghth) has averaged about 32 miles per gallon regularly. It goes up a couple mpg on long highway drives but holds at 32 in the city very regularly. It goes down slightly with a passenger and gear. Most of my riding is city commuting. Since the conversion of the Road King to a prime mover in late 2005 I've put 20K on it as an outfit in all weather conditions. I save data at every fill up with gas since purchasing the bike new and have a mountain of data on spread sheets to support the evidence of 32 mpg average. Prior to mounting the chair I was getting an average of 39-40 mpg as a solo in city riding and much higher on the highway.
94 FLHTC WITH CAMS AND HIGH COMPRESSION PISTONS AVERAGE 25 MPG HIGHWAY AND 28 MPG ON SUNDAY'S REAR TIRE ,4,000 MILE'S WITH CLASSIC W W TIRES.BUT I DO LIKE TO GO FAST !!!!!!!!
