Thanks guys!
Right. Here goes the most complex car part known to man kind loll
So... Center is done. This will snap right in the center of the cap and accommodate a P shield that I am already familiar with. I'll assemble all this together tomorrow if all goes as planed (e.g wife going shopping) and get this to render.
Next is the wheel hub adapter. I already had the concept in mind since a few days already but until I have a proof of concept to see for myself, I won't publish. Might actually need a few days for this part alone :/