Thanks. When I first got the car I kind of made a game of keeping that instantaneous mileage slider display on the bottom around 60mpg as much as possible. My best tank was 57.3mpg/703 miles. Of course I literally had to run it out of gas to get that. I did it on purpose, I wanted to see the max so I was carrying a gallon of gas in anticipation.
Slow down. Avoid jackrabbit starts, without overdoing it and being a nuisance to the car behind you. Slow down. Keep it in the highest gear possible while keeping that lower slider display high, it takes a little practice. Did I say slow down yet?
As for the tires, yeah I replaced them with something besides the B381's at about 70K and my mileage dropped. To about 47-48mpg if I recall correctly.
I went back to the Bridgestones on the third set. Mileage went back up, but not as high as when the car was new. I recommend the Bridgestone's but they were up to $93 per tire at tirerack.com last time I checked.
I actually just bought a couple cheapies for the front to get me through the summer, let's see if my mileage drops.
Cheers.