Well, sort of that way anayway. I've got my truck and trailer TAGGED in excess of what it is rated. Trailer tires are rated for a little over 12,000. Trailer is rated at 14,000.
When the Vehicle Enforcement Officer has his say, it's which ever one is the LOWEST is the max allowed.
Truck/trailer (disregarding tires) is rated at a combined 22,884 lbs.
Take tires into consideration (both truck and trailer) total drops to 20,775
Tags say 22,000lbs
Police bring me no joy over 20,775 (with appropriate weights on truck or trailer axles) regardless of tags.
All is irrelevent, as the load I generally carry is well under 17,000 total.
I like a "saftey net" when hauling. Truck/trailer/chains/tags/ect ALL need to be rated "over-kill" to satisfy me. Taking a loaded truck right to the limit is akin to Russian Roulette in my book.