It all depends on the design of the trailer and the capabilities of the TV and hitch.
The general recommendation is that a TT should have fron 10% to 15% TW
How this came about is pretty simple. Most TTs NEED at least 10% TW to tow well. And most TVs and hitches won't be able to handle more than 15% TW.
The bottom 10% figure is pretty much set in stone. But the upper 15% figure can be gone over IF the TV and hitch are capable of it.
In fact the more TW, the better they will tow.
Many here are very concerned about TW as their TVs have a low limit in this area.
Another thought to ponder, is that TTs are different from most other trailers in that the TW can vary a lot in the course of a trip.
FW gets used and ends up in waste tanks. Food gets eaten and ends up there as well. Propane gets consummed and dissappears. Many other items can move around the TT as well.
This why I always caution those with a TV that can barely handle the 10% TW.
I have a stout truck and hitch, and like my TW heavy.
MY TT has four 42 gallon waste tanks.... Talk about some potential for weight moving around!
