I ran RIBs for 40K+ and 6.5 years then R250 for 4 years before selling that trailer. I liked the tread and cost of the R250's over the Ribs. Both are great tires as a LRE LT tire. The Sailun S367 is a great LRG tire, and our new BH came OEM with them.
BTW I sold the used Ribs for 200 bucks on CL. Chris