You have the 911 for track i'm guessing?I got new Michelin Pilot 4S tires for mine. 295-35/R19 on front with 325-30/R19 rear. I am starting with 34 lbs front and rear. Torqued to spec.
The tires feel great so far, and no more track use for me. The car needs a cage, a harness, and a HANS to track. The factory Cup 2 tires are 4,000n miles maximum.