push back trying to get Michelin XPS RIB installed

I blew 3 tires in one day last spring. All LT 225/75/16. I was going to replace the tires with Maxxis but that thought was blown to the wind when I needed new tires now in Van Horn TX on a saturday afternoon. Before I put LT back on I would try the GY Endurance. Only had around 12000 miles on them and aired to 80 # and driveing about 62 mph. BUT air temp was 94 and brand new BLACKtop. I wonder. The tires where Uniroyal.durasomething.