From the SCCA forums:
According to Rick Brennan, a 205/50-15 Kumho XS will be available as the only 15" size. Another size that may work for the EF Civic is a 215/45-16. I believe a 225/50-16 will also be made. There will be many sizes available in 17s and 18s as expected.
I spoke to a chief engineer and he tells me that the Falken RT-615 was the benchmark and that their test driver is consistently faster on the Kumho. Internally the tire has been known as the FK (Falken Killer). The test driver has also been faster on the new Kumho over the Bridgestone RE-01R.
If you're wondering why the one of the circumferential grooves is closer to the outside, it is for better rain performance without sacrificing dry grip.
Construction and design is finalized. Compound has yet to be finalized should be in orderly fashion to meet the April deadline. Cannot say whether all the sizes will be immediately available but time will tell.
Prices should be similar to Falken RT-615 prices which will represent a good deal for such a fast tire.
the Falken RT-615 was the benchmark
^^^Yeah...judging by the exact replica of the outside tread...
I'm just glad there's some more competition for a change!
(Never did get to see Nick's new Bridgestones in action...)