Loose wheel nuts, REALLY, Earnhardt?

NASCAR are the "big boys". They stay with 5 lug nuts because that's what is in your production car. Also it makes the pit stops more challenging.

we're not really trying to keep up that look are we?
there is no point arguing that is where nascar started but they left that ages ago

the aussie cars you posted might be no further removed from stock but at least I can tell the make and model by the shape of the car, and they use single lug axles
come to think of it, so does the german DTM league
now there are some "stock" cars for you