Well yes that is what I was referring to.Car at 65C exactly hits a brick wall. So at least in my case its clear as to where the red zone is
Your baseline is 65 degrees as a 'normal heat condition', so you should compare it with that number under the same stress.
I don't care about numbers under normal driving. Only about what the temperatures are under heavy load (race track) or during extensive dyno runs on a hot day . Cause for normal driving etcetera, the standard radiator is just fine.
But we also need to make sure that during normal driving, the car gets up to temperature in colder conditions.
As always... trade-off haha