I decided to make all gears 3.4% taller by going 205/60 instead of 205/55. (This size also turned out to be cheaper, roll better, have better wet grip, and be quieter as a bonus.)
They even fill out the wheel wells better(55s looked a bit smallish):
I got 53MPG on a longer trip on sunday, and 42MPG to work and back today. And it's still a bit cold, can't wait to see what i can get when it gets properly warm!
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2016: 128.75L for 1875.00km => 6.87L/100km (34.3MPG US)
2017: 209.14L for 4244.00km => 4.93L/100km (47.7MPG US)