Originally Posted by dex37
I don't get it why you guys in the US have to drive with the windows down on a track day. That's absolutely ridiculous. There is no such rule in Europe and I think there will never be something like that. First of all with the windows down you have worse aerodynamics. I would absolutely hate it to spin and let all the dirt get into the car, apart from all the debris which will fly inside even if you don't spin. Another annoying thing will be all the noise from the wind. No, really that is absolute nonsense.
Because it's safer (for the many reasons stated above). Kind of like wearing a helmet, which afaik you don't need to do at certain tracks in Europe either. You are correct that you get debris, aero is worse, and it is noisy
But it's certainly not "nonsense".