there is no arguement against your point on the indycars, I don't think the rain tires would be capable of holding indycar speeds without coming apart...
and sure, nascar is 2 wide 90% of the time, I'll grant that.
but nascar doesnt have to make lane changes to avoid slower GT cars, while trying to make the gear changes...
actually the GT cars themselves are a great example too, granted they only run around 160mph exit speeds they still have gear shifting to do, and realistically produce close to the same actual downforce as a cupcar.
as for the "no air to stabilize them" where are you getting that? rain does not make the air go away... if anything it would be denser air creating more stabilization....
***and I've noticed we've started dragging this out so how about for the sake of the thread we just peacefully agree to disagree...