Some posters will swear by the Goodyears because some people who have had blowouts with Goodyear G614 tires have had the damage covered by Goodyear. Did Goodyear cover all damage by all people who have had damages? Hard to say, but they have covered some. There is no guarantee that the damage will be covered if Goodyear decides the tire failed because of road damage.
Other posters, me included, have decided they don't want to spend the large sums of money necessary for the Goodyear tires and have gone with the Sailun S637. We are gambling that the tires will not explode and damage our trailers. I spent $1307 for 6 Sailun S637 tires, that included shipping, and mounting and balancing. Will they last? Dunno, but it's worth a shot IMO.
Ya pays yer money, ya takes yer cherce. :)