It's not for looks. It's for more overdrive on my 6 speed manual. These tires are very narrow tread width (5"), and are 27.1" diameter.
I have Eclipse 205/70/15s (26.5" diameter when new) on now and will need 2 new for the front soon.
I figured an additional 8% overdrive nominal with the Eclipse, and if the Optimos fit they will give me 10% which would be nice.