Look on the side of sailun tires and see where they are mfg. Why everyone looks over this in these discussions beats me.
Meaningless reply as the Sailun S637 16" load G are top shelf right now. They've been on the market for over 10 years and have that long term service record that the Endurance may hve some years down the road.
The 16'/17.5" Sailuns got there start in the service trailer industry. Later rv owners looking for a better load G and load H tire that would stay together long term started using them.
The Sailuns have that earned years and miles of trouble free service over on the commercial side unlike the Endurance that simply hasn't been there yet.
JMO but when Endurance owners around the trailering world , report 3-5 years of actual use and 30k-40k miles of trouble free then a statement can be made what type of service they can give.
Just being on the market for 2 years and X months is not a indicator how they will do long term.
I've said before...the Endurance may have that long term service record from around the trailering world (rv and non rv).