I found information about the Bridgestone R500HD. I had 5 installed, my weight on the axles is correct for these tires. I had rig weighted when I was going on a trip with all loaded. These are commercial rated tires for work vehicles. Good tread for a trailer tire.
The R500 Bridgestones LT E at 3042 lbs per tire have been around for years and have always been one of the better choices for rv trailers and commercial work trailers with 5.2k and 6k axles. Commercial haulers find with a LT tire we don't need a huge amount of reserve capacity like ST E tires require.
If you do a lot of road miles per year you will find more miles of service with a LT E with 14 to 16/32nds of tread depth than any ST E tire like a Endurance with just 9/32nds tread depth. Big deal for those of us that see high miles of road service.
Keep those R500 Bridgestones pumped to the max for max service