Everybody's going to have their own internal value calculation for peace of mind. I am taking the advice of the wise old heads on this forum (and elsewhere) to swap out the no-name Chinese LRC tires for GY Marathon LRD.
Besides the quality factor, what figures into the calculation is the following number crunching...
The stock specs of my new rig are a 7944lb unloaded vehicle weight, cargo cap of 1406 and pin weight of 1324 (I know my CC will be reduced by the weight of my options). Assuming the worst case that I'm a bad load-master and all the cargo weight ends up on the trailer tires, that's 8026 on the tires when the LRC max is 8600. That's 93.3% of tire capacity or only 143 under max per tire.
Too close for my comfort (also not super happy that its right at the axle ratings but not much I can do about that).
Going to LRD, the max is 10160 and I'm now 79% of tire capacity or 533lb under each tire's max.
That (and a TPMS) does it for me.
2015 Rockwood Signature UltraLite 8282WS Platinum, GY Marathon LRD, TST 507RV TPMS
2005 GMC 2500HD CCSB D/A, Curt E16, Prodigy P2, Garmin RV760LMT w/BC-20 b/u cam