After a couple of folks here had catastrophic tire failures on grossly under loaded ST tires I switched to Micheline Harmony passenger car tires, each with the load capacity of the entire weight of the tear. Trailer tires are not as vigorously tested and standards are not as stringent, my bet they figure it will be less fatal when they blow. On FB one couple with a new trailer has had one blow out per day (total four) and I suggested weighing the trailer and making a complaint to NHTSA.
Today some one posted that Goodyear is now making a US made ST tire.
https://corporate.goodyear.com/en-US/media/news/goodyear_launches_american_manufactured_trailer_tire.html
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