All the answers are applicable to spoons question. AND jimlins answer re tire/rim manufactures do not have tires capable of handling the loads.
Another issue on semis has been loading dock heights. They are generally speaking, limited to a 36-38" diam tire, as any taller would make a truck/ trailer bed height too tall for warehouse decks.
Only in last 10 yrs or so, have manufactures come up with technology to make a 20" wide tire, in a needed 35-55 series tire with stand the minimum 20.5k to 22.5k lb per tire capacity to meet federal bridge laws.
Their are tires as I noted earlier that could work on pickups in the 5-5.5k relm. Not always the best riding tires.
Another point or two to ponder.
Marty