Well, I ended up putting on a set of Hercules tires, 225 x 75 x 15, 40,000 mile tires (these tires will likely never see 40,000 miles before the "time" runs out on them) at the recommendation of my friend in the tire business. Tires come with a 1 year road hazard warranty, total come to $450 out the door on my car.

We have just returned from a 2500 mile vacation with the new tires, which are now a little over a month old. The tires were a bit noisy on some of the grooved surface roads, but were very quite on smooth roads. we experience several different road surfaces as well as rain and freezing cold. The tires were trouble free, as one would expect from new tires. Gene