rember this isn’t true for all states, I’m in Pennsylvania, my f150 is registered class 2 5,001-7,000lbs, technically I can’t use the last 500lbs of my 7500 gvwr Factory rating. Nothing here is class 3 and class 4 is split 4A and 4B 9,001-10,000 and 10,001-11,000, costs the same to register...