So let me get this straight; you're taking it as gospel even though it might as well be scribbling on a coctail napkin.
Frankly, I'd like to know from a manufacturer like Ford, GM, Mazda, or any of the others, why they choose to have an extended hub that projects into a precisely sized hole in the wheel center on pretty much ALL of their vehicles. Why do they have such hub centers of differing sizes on various vehicles? Seems to me it would make sense to have them all the same size so you could interchange wheels freely and possibly save on some manufacturing costs.
Additionally, how much force do you suppose is exerted onto a wheel when a car rolls through a pot hole at 45 mph? Seems to me that forces approaching the 10x margin of safety are not outside the rhelm of posibility, especially if the car is going around a turn 'cause then you add the stresses of that lateral load on a relatively soft alloy wheel. Nasty stuff...
Maybe I'll do a little research of my own...
