Wondered if anyone could help me out ....
I've got a set of tires on a bike I bought used that still have plenty of room on the wear markers - but I'm not sure how they've been heat cycled. I believe they were run a few times with warmers, and I've put a track day on them without warmers (although I now have warmers).

How do I know if the tire has been cycled too many times and won't stick when I need it to? I don't want to pull the tires off if they are good for the race class coming up, but I don't want to end up wiping out because I tried to save a couple bucks either. Any good way to tell if a tire is still sticky?

Thanks!