I found this in one of my back issues of Grassroots Motorsports, and thought I wouldnt be the only person who was interested in printing it off, laminating it, and keeping it inside the case of GT4. I have found this to be extremely helpful to keep in front of me while tuning in GT4.
That's a handy general set of simple rules-of-thumb to have in front of you when setting up a car.
I have a similar one myself but it's held in my head and I've always meant to type it up and have it to hand for those "Why isn't that working?" moments .