Just a me-too post, I suppose, but my first inclination is to go a bit higher in load capacity for that trailer. There was a poll here or on another Mac forum requesting the loaded weight of the 26X on it's trailer, and those under 4000 lb weren't under by much, with some being a fair bit over. The axle is 3500 lb (with the appropriate bearings), and IMO at least, it's too light for the job, as were the original tires. The previous owners of mine added an axle, so mine loaf at about 1000 lb per tire (1760 rated) - also good for the bearings.
For infrequent short trips you're not tempting fate that much, but for the sake of a few bucks, I'd go with a bit higher capacity tire, and certainly not less than same load rating as what's on there now. Too many stories of folks who can't keep tires on their trailer.
I should mention that the tires on the original axle on my trailer date back to the year the trailer was made (1998), and they're Carlisle ST205/75D-14 load range C (1760 lb at 50 psi). I'm guessing, from the date code on the newer tires on the added axle that the originals spent 5 years as the only tires under that trailer. I just replaced them with new tires on galvanized wheels, and will replace the other two next spring when the budget resets, as I don't trust tires that old. So I suppose, marginal or not, the 205's with load range C would work for you. I just don't like loading tires right to the max as a matter of routine when it's cheap enough to add some safety margin.
In other words, I have no idea what I'd do if I was you. :neutral:
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