Hi All. Thanks for the tire replacement recommendations.
Just wanted to provide an update. I checked out Discount Tire. They have a relatively new location near me. While the lot isn't huge, they directed me to park next to the building blocking only the last bay. With two entrances to the main road, I could pull in from one end and leave from the other - no backing needed. In about 30 minutes, a crew had replaced the tires.
Old tires: Westlake ST225/75R15. Load E. Speed L.
New tires: Goodyear Endurance ST225/75R15. Load E. Speed N.
I had them install metal valve stems as I am planning to add a tire pressure monitoring system.
Tires have a six year warranty.
Per tire price $134 + about $45 for installation, disposal, etc.