I haven't been to a road course with them, but I've used Kumho V700's for the last 2 years. Really good auto-x tire, I imagine they would work well on a road course, and at the strip they got me several 2.1 60' times. And they're cheaper than the Hoosiers. I have a friend who auto-x's his Miata, and also works with tire manufacturers regularly. He has a set of Kumhos for hot days and a set of Hoosiers for the cool days. Dunno if that helps or not, but that's been my experience.