Tires

+1 for Endurance.
-1 for Maxxis.

The XPS RIB is a commercial truck tire. I've been running them on my toy hauler for 5 years now and they are wearing fantastic. Tires on triple axle trailers really take a beating from scuffing and my RIBs are holding up well.

After a year of research on RV and Freight Transporter forums, I decided to go with Michelin XPS RIBS tires. They seemed to have the best reviews from people who put lots of miles on their vehicles each year. My second choice would have been Maxxis tires also due to the posts on those forums.

You can't go wrong installing a set of Maxxis M8008 ST tires. They are available in 8 ply rating.
Be sure to have them balanced.

You can't go wrong installing a set of Goodyear Endurance which in your size are load range D.