I am currently running Sailun 16" S637 tires.
It is a super heavy duty tire. After reading several favorable reviews on this forum I decided to give them a try I have not been disappointed. I have yet to read a negative review from some one who actually owns them.
They are not your typical Chinese tire they are built to meet a high quality standard and Sailun has committed themselves to meet this accreditation standard.
RV .net member NC Hauler is familiar with Sailun's certification and can vouch for the validity of the standard.
The Goodyear tire has a stellar reputation. Goodyear has been known to pay for any blowout damage damage caused by the G614 tire.
A quick search had the Goodyears priced at $321.00 each vs.157.99 for the Sailuns.
That is $160.00 difference per tire or $640 for a set. I figured I already had insurance to pay for blowout damage. I did not need to pay Goodyear 160.00 more per tire just for the added protection.
Beware I believe the Sailun 16" tires are a bit larger in diameter than the Goodyears
So far I have been happy with my decision. I have had the Sailuns for 2 full seasons.