Stumbled across this device that might be of interest tire & wheel fitment choosing:
https://www.speedwaymotors.com/Wheel...up,485869.html
A page showing options for bolt circle etc:
https://www.speedwaymotors.com/shop/...4-17-601-14954
And a YouTube video showing how it's used (lame music opening naturally):
There are numerous sellers of these tools, Speedway Motors just being one of them.
Hope this proves useful to some here---feel free to place this in another sub-forum if it would be more widely viewed by those most likely to find this information useful.