I wanted to thank everyone for all of your help on this tire issue.
I think I must have been living a charmed life or something.? When we bought our toyhouse in 2001 it had what I believe were the factory-original tires, Bridgestone load range C (50 PSI).? We ran them until 2011 when we replaced them with the current Hankook load range D (65 PSI).? So, if my guess is correct about the Bridgestones being the originals, that's 21 years on those and 12 years on the Hankooks.? In all that time, never so much as a flat tire from picking up a nail in the road.
I must have had an angel riding on my shoulder.? (Oh, wait... I'm married to one!)? :-)
Eric in NH