I'm making some custom hubcentric adapter rings tonight out of 6061-T6 barstock (the wheel centerbore is an oddball size and seems nobody has off the shelf hubcentric rings.) Plan is for a .002" press fit into the wheels and a .010" clearance to the hub/axle flange. I'll be hard anodizing them for corrosion resistance.
The wheels work fine as-is being lugcentric (if you take your time mounting them) but paranoia is a driving force behind many of my projects.
Better still, hopefully tomorrow night I'll be taking the knockoff adapters to a friend's shop where I can use his 2-axis NC retrofitted Bridgeport to ball mill a bowtie outline on them. Shhhh, don't tell Mr. Shelby!
Just need to draw it up tonight and generate some G-code to feed the machine. I'm open to other suggestions in this department but a slight bowtie outline seems like the logical choice.