The charts are not crystal clear. If you call them you will find out much more than you can on the website. I have dealt with these guys in the past, and they are great.
These are the ET-V wheels with 4" b.c. I had made by ET several years ago. Please note they use some unique lug nuts in order to clear the center hub. (long cylinders, with a hex inside one end, and threads in the other end) :
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