I'm looking at replacing the tires on my G35 sedan 6MT. Currently I have 235/45R18 NCT5s on the stock 18" wheels. I'd like to replace them with stickier tire (I'm in Texas, and have another car for colder days). I also like to take it to the track periodicaly (Texas Motorsport Ranch in Cresson), so great cornering/traction are very important to me. The NCT5s seem ok, but...

My options seem to be :
Bridgestone Potenza RE050A
Continental ContiSportContact 2
Pirelli PZero Nero
Kumho Ecsta SPT

Any opinions or alternatives?
(seems to be a lot of info/opinions on coupe sizes, not so much for the sedan)
Thanks in advance!

 

the KDW's i would recommend

 

I had potenzas on my MSP, they were awesome in wet/dry and lasted about 60,000kms

 

Ok, what's a KDW, and do they make it in a sedan size?