I can see where logic would suggest that to you, but logic goes out the window in PWD the minute you get a track to test on. While a lot of basic physics stuff is pretty easy to rely on, MUCH of the more subtle things turn out to be counterintuitive.
For me, razor wheel cars seem to like being very close to that 'just daylight' region, while the big wheel cars like a more comfortable space. Not sure if that is true for the majority, but it's true for my cars.