Go look up the tire tread wear index rating and then look at your Pilot Sports. They aren't SUPPOSED to last long.
Good track tires are sticky and wear out FAST. Good street tires are sticky, but less so than track tires, and last a good long time.
I am going with Nitto 555 G2's specifically for tread wear, knowing they are sticky enough for street use and occasional track time. Since it will be a new car for me, I'll go maybe 85% on track and have fun, but there is no use in going 100% unless you are racing for gain, are in practice ... so to speak ... and do not care if you damage your car. When I went to Bob Bondurant, it was 25 years ago, and I'm not exactly "in practice" when it comes to track driving. Use to be and can get there again, but it will be at some expense.
When I went to Bondurant, I went through 3 sets of tires, 3 sets of brakes, and a water pump in 3 says on a Jack Rousch-prepared Mustang GT.
Good luck to you! Cheers.