Ok, short version sold the house and went full time, did all the research set up a mail service etc, The DMV is not wanting to take it for my tag renewal. They need a physical residence within the co...
I see the OP is living in Tennessee. I had no problem using a mail service to register my RV in Texas, but Tennessee may not be so flexible. All my exes live in Texas, but I'm still not living in Tennessee. I'm happy in Texas for now.