I got about 8k miles at the very most out of my 275/50 15" nitto's, and my best ever 60ft with them was a 1.9x, mostly in the 2.0 range.
Theres no way in hell I would ever buy another set. over $300 for a pair of tires that lasted me less than 9months and only about 3-4 track days.
I'd suggest the BFG's for you.
I'll stick to the slicks for the track, theres nothing like dumping the clutch at 5000rpm, hooking up, and trying to hold on
