Same here in Oregon, once you are over 9,999 lbs it is a different registration ('T' plate) and much more for registration, as it goes from <$50 per year when under 10,000lbs, to $450 per year for 10,000-12,000 lbs and on up from there, OUCH! I'm guessing the OP is going to be a 'motorhome', so...