With two track events per month,(autocross and time-trial), I am going through tires at a fast rate. What is your opinion on which tire will last longer in a track environment,(D.E's, time-trails and Autocross)? The price difference is fairly small, about $10 a tire. And yes, I am aware that over 3-4 some odd sets a year, that is nearly a tire. But if one lasts longer, it will kill any difference. -Bobby ps- and yes I have them heat cycled.