Originally Posted by SuicideSaints
The tires are rated to carry the full TT because you subtract TW since that part is carried by the TV. This makes them "within" limits.
The load range on the sidewall is for static measurement and not meant to be calculated for dynamic applications.
I'm not so sure the tire manufacturers agree with this.
Carlisle Tire has a document titled "Trailer Tires: Tips & Best Practices". In that document they give the following advice:
"The combined capacity of the tires should exceed the loaded trailer weight by 20 percent."
There is no mention of subtracting tongue weight, which adds another 10%.
The net result of this recommendation is that tires should have about 30% more capacity than the ones put on my trailer by FR.
The reason for this excess capacity would be because the static load rating of tires doesn't have margin for lumps, bumps, and weight transfer on curves. The overloads that I calculate on turns just about go away if the advice from Carlisle Tire is followed.
I'm trying to contact an engineer at Carlisle to probe this further....