"Bottom line Goodyear stepped up and paid & I am not sure if other tire manufactures would do that with 4 1/2 year old tires.
Thank you Goodyear.... "
GY is the ONLY tire manufacturer that will pay for damages.  They recently replaced 3 of my 4 GY "H" tires because one lost part of the center tread and the other two showed signs of coming loose.  They pro rated them .  My 4th tire started showing signs and since I had been in contact with their CA rep about the three I spoke to him about the 4th. He arranged for me to take the tires to a local GY Dealer and have it replaced for free.
FYI these GY "H" tires do not blow they only loose part of all the center ribs.  I think I just got "LUCKY" and got a bad set.  I don't run trailer tire monitors because these just have no record I have heard of for blowing.
First pic is what the tires start looking like.

