Can we talk about "center bore" for a minute?

In 2 cases for me, putting Ford-based wheels on Mopars (aftermarket FR500 wheels on my Duster and OE turbine-style wheels on an M-body) I found the center bore itself to be big enough but there was a thin lip that shrank down the ID a tad. I did have to get the front wheels bored out to fit on my hubs for the Duster (like 72bluNblu said, center bore shrinks down at the outboard side to fit center caps) but for the rears I just took a sanding roll on my Dremel and slowly removed material from the lip in the wheel center bore until it fit snugly over the hub on the rear axle flanges.

To me having hub-centric wheels is more of a bonus, not really needed unless you're doing some serious corner-carving with wide sticky front tires (heard of people breaking wheel studs from that!). Takes a bit of the load off the lugs but not much if you look at the direction the forces are acting.

To add to the star-pattern method for tightening non-hub-centric wheels, I lightly snug down 2 opposite lugs going back-and-forth until they're fully seated then proceed to snug down and torque the rest of the lugs in a star pattern. That ensures the wheel gets centered before any lugs get torqued enough to keep that from happening.