The original question wasn’t what size trailer was needed for the tractor and loader and loaded tires and implements. It was what size trailer would be needed for the tractor with the loader and loaded rears. And at roughly 8,940 lbs for those items a 12,000 pound rated trailer would be plenty to haul it. If you want to also haul additional implements, and maybe a spare diesel tank, and a
ballast box, etc then a 14,000 pound rated trailer is not sufficient either. If you intend to haul more than the tractor with the loader, then not only trailer weight rating is different but so would the physical size of the trailer. All of that “stuff” takes up a lot of room and would require a pretty long trailer as well just to physically fit it all. So you’d definitely be into at least a 3/4 ton truck and a really big trailer to go with.