Bill, no worries about thread jacking on the other one!
I have had top shelf factory tires when I have bought new trucks. A ford Ranger in 95, barely got 20,000 out of them, Again Firstone on my 99 F 150 barely got 25,000.
I never buy high dollar tires. I am on my my fourth set of skins on this truck, ( 180,000 miles). So subtract the original Firestones and that leaves 155, 000 on three sets of off brand tires.( this set has a lot of life still) And I have always had one tire be the cause of needing new ones. Three are still usable for another 20,000 miles and one is flat out shot. Dunno why this happens.
So from that I say you are not doing well with what you have on them rice burners.
I have had Michelins on the Minister of War's cars several times, they do good but not what I get on my truck.
I do check tire pressure and inflate as needed every month.
FWIW I have paid in the ballpark of 500 bucks for four tires every time.
these look very similar to mine