http://www.tirerack.com/tires/tests/testDisplay.jsp?ttid=4
Kumho Ecsta SPT are a great tire, great price, and kicking ass in head to head reviews. I don’t like putting much weight in customer reviews on tires. The majority of drivers don’t know shit about tires and when they go from their old, bald, factory tires that were out of balance to a new set of tires of course they give the new tires glowing reviews.
That said, I’m really happy with the compromise of the Ecsta SPT. On the GTO I’ve run the factory performance all season and a set of Ventus RS2’s. On the previous car I ran a set of Yoko AVS ES100’s and Azenis RT-615’s. Out of all those tires the Ecsta SPT was the best performance street tire. Less grip than the 200 treadwear RS2’s and 615’s, but 200 treadwear tires wear out way too fast. The 320 treadwear SPT is a much better balance between grip and treadwear for anyone not trying to win a street tire class autocrossing.