ST Tire "Plies" Question and a PSI Question

Me Again wrote:
Again, we have had numerous reports of the second tire on the same side fail within limited miles of the first one!!!!!!!! Chris

Hey Chris seems like pretty simple math to me. With a FW you have three points of contact. The Pin and the 2 pair of tires on each side.
For simply ballpark numbers lets say the pin has 2K lbs and each pairs of tires on each side of the travel has 5K Lbs for a total trailer weight or 12K lbs.
The single weight of 5K lbs is distributed in a un-equal but similar manner between the 2 tires on each side of the trailer. So for argument sake lets say the distribution is equal at 2500 lbs on each tires as you are running down the road. and lets say that the tires have a 3042lb max capacity.
Each tire has a 500lb cushion under normal conditions.
Lets says one of those 2 tires blows out and can't carry any weight?? Where does that extra weight go?
Almost entirely to the other tire on that same side. So now you have a tire rated for 3042 lbs trying to support 5K lbs. 60% Overloaded.
We all know how fast heat builds up in a under-inflated well there will be a rapid heat build up in that suddenly overloaded tire as well regardless of inflation level, speed traveled or distance covered.
How far and how fast it must carry the 60% over load will depend on how quick it fails and how much deterioration towards failure it will incur.
Regardless of whether it fails or not before the blown tire is replaced it's life will have been severely impacted and will fail prematurely compared to an identical tire under the same conditions except for the sudden 60% overloaded.
Not changing the second tire on a side when ones blows out seems foolish to me.