I think after all that has been said in this post a recap of the OPs questions is necessary.
The OPs trailer is a 2021 model with 6000# certified axles. It came equipped with ST235/80R16 LRF tires (polyester). They provide a maximum load capacity of 3750# at 95 PSI. Those tires will provide 25% in load capacity reserves. Yet, he asks about going to a larger designated size tire that will provide nearly 47% in load capacity reserves. It’s very hard to support any of his requests when he already has more than just sufficient load capacity reserves available and his current tires comply with a load inflation chart for that designated size. Maybe he just doesn’t know that sticking with the OE designated size and increasing its load capacity to a LRG will not invalidate his vehicle certification label. However, why the need for 4080# of load capacity for 6000# axles???
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