I found it a bit humorous that the physics developer, at least for the Historical version, stated in his Physics Guide that he couldn't see a reason to set the wings lower than 20 for a road course, which Suzuka would qualify for. He stated that somewhere like Monza, he could see the possibility of going lower, though.
I started out running 15/11 and I think my final race setup was 17/13 and my car was pretty "grippy" through every corner except for the last tight RH'er through the Esses, but that was more because of weight transistion due to stiff springs than it was aero. I'm sure the LE edition's quite a bit different than the Historical one, though.
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"Sometimes I wonder whether the world is being run by smart people who are putting us on, or by imbeciles who really mean it."
Mark Twain