Chip you have enough on your plate as it is.
If you select a tire supplier to sponser, it is pretty close to a spec tire.. the only difference is tire sizes. then it becomes who can fit the largest tire on their car. After jumping up 10mm on width on my street car within the same type of tire (Dunlop star specs) it makes a big difference.
Right now the larger R compound tires do corner better but due to the increased traction they are slower in the straight line, so it kinda washes out. Before each race I have been testing 205 v 225 tires on each racetrack to determine what is the tire to have.
With the less sticky street tires the difference in rolling resistance form a 205 to 225 is not going to be as high so running a wider tire is not going to slow you down as much in the straight. In ITB this is not a really big deal as we are limited to 6" wheels. However in the higher classes with wider wheels I can see it being who can fit the rubber.
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