WalMart's site is difficult to use. Here are the links to the two Carlisle tires. The pricing is the lowest I've seen anywhere.
Load Range D is $61:
https://www.walmart.com/ip/Carlisle-...R15-8/55012157
Load Range E is $67:
https://www.walmart.com/ip/Carlisle-...DxgI1uyfgX0wAw
At these prices, it's difficult to justify using questionable OEM tires. Just make sure your wheels are rated for 80 PSI/2830 pounds.
As a sidenote, the Goodyear Endurance tire line is brand new. There is only about 3 months of "customer use" available. The tire line may prove to be very good, or it may prove to be a repeat of the Goodyear Marathon. It's just too early to tell and there's no data to indicate how they will last. Somebody has to be the "guniea pig" but at almost double the price of the Carlisle's, I'd let someone else take the risks......