x5 weight issues

[civdiv99]

I'd wager it's a 7,000 gross wt tandem axle trailer he's talking about. 3,500 lb axles are a very common axle rating, and it wouldn't surprise me if the tire load ratings are commensurate with that axle. Trailer tires, especially with a few years under their belts () are kinda notorious for failing if tire pressure is even a bit low. Regardless of your decisions, I suggest being all kinds of anal about checking them yourself and don't run even a little bit below max pressure on the sidewall if you are (and you will be) approaching the tire's design load. If possible, after you pick up the trailer, you can generally find a load vs. pressure table on manufacturer's website.

Second, check them often if you don't have a portable tire pressure monitoring system (spendy, so likely not, but for those who tow often, I'll tell ya what, I wouldn't be without mine). If one tire fails you may not be aware of it, but then the other will fail very shortly thereafter, and you will then be acutely aware of it. And it sucks to be on the side of he road near "Thumbnail, Nebraska" waiting on the rental company to get it unscrewed.