Check out this thread on Bridgestones and tire pressures. There are probably many more if you check around. In fact, it's the optimum tire temperature you are looking for and what pressure delivers such under specific conditions that day.
Of course, air temps will have to be factored in reading this thread.....it was 95+ at TWS when were were there at Rally 4.
http://www.fordgtforum.com/forums/s...as-World-Speedway&highlight=tire+temperatures
Mike,
Here is a thread regarding tire pressures/temperatures for Hoosiers. While not Bridgestones, it gives you an idea of optimum tire temperatures of 180-200. Perhaps someone with Bridgestones can provide specific tire temps for them. I suggest you buy a tire thermometer to use when you track you car. It is extremely helpful in setting proper tire pressures as the day and track get warmer morning to afternoon.
http://www.midatlanticmotorsport.com/hoosier_tire_tips.htm