OK... this is a weird one for me... never heard of a trailer inspection and I have a large horse trailer. Trailer weighs empty around 3800 pounds and based on weight of horses, tack, and what not, I've pulled it weighing around 8500 pounds or so... and my trailer is pretty light compared to some of the mobile palaces my friends have ( easy 12k pounds ).
Anyone have a good place to investigate this further?