I wasn't arguing the fact that they don't.

I could mount a 315 on my rear rims of the Supra, but it will do me no good because the rim is way too narrow for that size. It will bubble up, and once it spins at a very high rate of speed, the tire contact patch would go "in" more.

Guess I'm just searching for a better reason than them just looking nice. I would run a tire with a much nicer/aggressive compound for what I need than one that looks better.