Lots of problems for the first 2-3 years of RVing with ST tires. Then I switched to LT and Sailuns and have had no problems for 16 years.
My TH is a tri-axle.
On edit:
My first TH was a tandem axle with china bombs on it. Two blew the same day after 2000 miles (500 into the return trip). Eventually, I switched to Goodyear G614 and never had another problem.
I insisted on a tri-axle for my current TH (new in 2011). It had china bombs on it but I got 15000 miles out of it before they were worn out. Replaced them with Sailun S637. No problem.
Oh yeah, I NEVER drive over 65 even though these tires are rated for much higher.