I know when I’ve hit the perfect apex. It’s when I’m able to just barely stay on the track at the exit, while accelerating as early and hard as possible. If I have to ease up slightly on the throttle to stay on the track, then I apexed too early. If I wasn’t able to unwind the steering after the apex, I apexed too early. But if I still have room left on the exit, then I apexed too late.
