Just for info I ordered set SAILUN 637 G load tires for friend and this size is almost identical in diameter size of the GOODYEAR 614. 30.7 inches so good option to consider
I just got off the phone with someone about these tires and he told me that these are from China (he said all ST's are from China or out of the country) and that yes, the Goodyear G614 are American. He said these were 10 ply compared to GY 14 ply. They both had a five year warranty on them. It's hard to resist the price of these compared to the Goodyears, I'll tell ya that.