-How big of a difference is there in the late model tires between the different compounds and different model of tires, far as handling of the car and speed from the tire. -Is one model of tire faster than the other or are they general about the same. -I have been told that the white dot tires will fire fast, so would a white dot tire be ideal for qualify or will they take more than a few laps to fire and be effective? -How long will the firing last on white dot tires? - Is the rib tires the only thing that is a white dot tire?