I sort of wonder what everyone's personal choices are when it comes to which center-lock wheels you apply to which cars?
For me, I leave the wheels on race cars as-is, as I only apply custom wheels to road cars, especially ones where I can install something like a widebody or other custom parts.
I don't think I've really had much use for the center-lock wheels from Enkei nor Rays. I do wonder if the Rays RW-GT3 wheels are only for race cars IRL, or if they've been installed on various road cars, too, as I do think they look good. Otherwise, I do seem to put the center-lock design from OZ or BBS on various European supercars that come with them as-stock. Meanwhile, the center-lock designs from Motegi Racing do seem to fit various Ferrari models very well, especially since they come stock with the 458 GT3, but like any other center-lock design, I personally only install them on cars that already come with center-lock wheels as stock.
Now, this applies to both center-lock wheels and those that aren't, but I do generally like to install wheels that resemble the factory wheels as close as possible. So I might put the OZ center-lock wheels on a McLaren F1, and then one of the BBS designs on a 911 GT3 RS. For many classic cars, I just install the tried-and-true BBS RS, such as on the newly-added Renault 4, though the American Racing wheels may prove more appropriate to some American classics. On Japanese classics in particular, it depends on how many lugs I can spot on the stock wheels, but if it's four, I might go for the four-lug version of the Rays TE37 SL or maybe the Work Equip 01. For modern cars with a rallying heritage behind them, especially Italian ones like the Abarth 500 or the newer Mini Cooper, that's when I'll especially go for the OZ Racing Leggenda.
EDIT: Although I recall at least one version of the Dodge Viper coming with six-lug wheels, I still find it personally fine to install a five-lug design, as I usually reserve any of the six-lug designs for one of the two pickup trucks. Hopefully we'll get the Dodge RAM Rebel and Chevrolet Silverado ZR2 to join the Toyota and Ford, and maybe even new rounds of the Pickup Truck Race to boot. Heck, the RAM Rebel could even get the Challenger SRT Demon's engine as an alternative option, but I digress.