Street tires in IT??

[lateapex911]

Can't really turn back the clock to the good old days of those BFG tires.

Remember those?

IT is far too wide ranging to have spec tires. Moreover, as was pointed out, you need many different sizes to accomodate IT.

I see many people happy with the Hankooks, but crying over availability.

Wait. NObody said ANYthing about a "Spec tire"

The idea was, a gentlemans agreement within the existing structure that say 200TW tires from any maker get a % weight break.

Now, coomon sense dictates that the % weight break isn't going to be the same for ITC as it is for ITR. Sorry, physics rule there. So, sadly, the ITC and ITB guys might not get the opportunity that the higher class guys get. They wouldn't anyway because of available sizes.
But, if it were to help a large percentage of racers in classes where cars can still be classed (Anyone seen a new ITC VW Bug run?) then it's a good thing.
Nothings perfect.

[quadzjr]

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.