I went through a similar thing in Indiana. My F350 is plated for 9,000# on the registration (we weight about 8,200# by CAT Scale ready to roll). I asked BMV about pin weight when I 1st registered it and was informed that was covered under the 5er's registration. Now if it was a commercial tag, it would have to include the weight of the trailer (Gross combined). My insurance agent says I'm ok to 14,000# on my truck and I've thought of raising it cover to my 11,500# GVWR but I really don't like going to the BMV office to do it. Heck, I see F350's running around town with 7,000# tags.