Road course is track Dependant, if your in a torque trough coming out of a corner your gonna loose a second per lap. I have this problem at sebring, turn 7 3rd gear is too high and 2nd is too low. now I've solved this problem with a slightly smaller diameter tire... I can carry 3rd through the corner and be on the power coming out. but ALSO with the larger tire being a R-compound, I can carry that few MPH diffrence if I hit the corner perfectly.

so there is no honest answer to your question.