I completely understand, if you read some of the older posts about the subject, you will see what I'm talking about. The problem is more mass away from the center of the wheel to turn, not the overall diameter of the combo, as I used to think. I believe somebody said Sean Hyland tested it once, testing between 2 different wheel sizes, virtually the same weight and overall diameter, but still lost more than 5whp. It doesn't only apply to drag racing either, but the turbo setup should be plenty of power to sacrifice a few hp to look pretty.
