I hear they are a stiffer sidewall, flat treaded design, kinda like a car tire
![Grin ;D](http://zggtr.org/Smileys/default/grin.gif)
They would be out already but they are still in the middle of an endurance test. Rumors have it they are at 50,000 miles and not even close to the wear indicator bars
![Shocked :o](http://zggtr.org/Smileys/default/shocked.gif)
Straight line handling is great but due to the shape of the tire cornering is greatly impacted. The test would have been completed but the secret testing facility experienced severe rain and the tire started hydroplaning at parking lot speeds so they suspended testing.
![Lips Sealed :-X](http://zggtr.org/Smileys/default/lipsrsealed.gif)