The Fuji Racing car I mentioned is a street tire class car, obviously unlimited is more, and obviously unlimited would mean WIDE tires because BIG HP numbers. In MY EXPERIENCE a Miata naturally aspirated with huge wide tires simple doesn't work as well, at least to my driving style. I'm not stupid when it comes to Miata setups or racing, no shit a 9 inch wide wheel will grip better if you're in a fast car. It's also about the driver.