I traded my 2006 GL1800 which got about 38 MPH under almost any condition (2-up at legal speeds). Bought a 97 GL1500 Aspencade with Roadsmith conversion. Am getting 30-32 mpg riding 2-up at legal speeds. I found that the gas tank on the 1500 wasn't quite as big as on the 1800 so I have since added the Roadsmith auxiliary 5 gallon gas tank kit and go about 250 miles between fill ups. The only downside to the kit is that the auto shut-off on any gas pump doesn't work on the aux gas filler for some reason so you have to be careful or you will wash the side of the trike with gas. The gas gauge isn't particularly accurate for either the aux tank or main tank so I watch the odometer.
I was a little disappointed at the mileage when I first got my trike but just noticed in Motorcycle Consumer News that a period test of a 97 GL1500 SE had average gas mileage at 32.6 mpg... I am getting pretty close to that after the trike conversion so I guess I should be happy!
I was a little disappointed at the mileage when I first got my trike but just noticed in Motorcycle Consumer News that a period test of a 97 GL1500 SE had average gas mileage at 32.6 mpg... I am getting pretty close to that after the trike conversion so I guess I should be happy!