Is there any regulations regarding tongue weight from a legal point of view when building a trailer? I ask because I purchased a trailer that I was told could haul a full size bobcat ahead of the axles and still not give excessive tongue weight due to the axles being spaced apart in the rear with a dump bed over the axles. I knew it would be heavy, but was assured that they have had no problems with them. Well I cracked the frame nearly in half only hauling a small utility tractor. The operations manager said it was not built properly and needed added reinforcements. The tongue weight was checked by the manufacturer and showed 875 lb's with the trailer empty and no reinforcements added. I assume the added steel would get it near 900 lb's. This trailer is designed as a lawncare landscaping trailer for 3/4 ton and 1 ton trucks. It does not seem reasonable to ask a 1 ton or smaller truck to haul this trailer, let alone haul one with a Bobcat a head of the axles. I want to know if I have legal grounds to say this trailer is built improperly and should not be on the road due to the nature of it's construction. Any help would be appreciated.