I drive very conservatively all the time. I always drive 5 mph less than the posted limit, sometimes 10 mph less. I just leave a little sooner. The trip to Nashville netted an average 40.55 mpg for the whole trip. I'm sure I did better than that on the Blue Ridge Parkway at 45 and less on I-75 but that was for the whole trip, keeping receipts for all the gas and using the trip meter to record the mileage. The 2 folks I rode down with did appreciably better than that. They were both in the low 50's with their Evo Dressers.
That could also be why at almost 6K, the rear tire shows very little wear even being a paper thin Metz. I'm figuring that with an Eagle, I'll cack out before the tire wears out.