Most important ratings, for an SUV, are payload and GVWR. You will run out of available payload, before you get close to that mythical max tow rating.
Besides max tow, what the vehicle is rated to pull, it also has GVWR, gross vehicle weight rating, and payload, what the vehicle is rated to carry. With a travel trailer, ten to fifteen percent of it's loaded weight, is actually carried by the vehicle, not towed. That means the vehicle needs enough payload to carry everything and everybody, in or on it, plus trailer tongue weight.
Max tow rating is calculated considering a 150 lb driver, and, that driver is alone with no cargo. As you load people and cargo that tow rating drops, as does available payload, pound for pound.
Average camping load (dishes, pots and pans, bedding, camp chairs, BBQ, groceries, water, etc) is 800 to 1000 lbs.
If you buy a 5200 lb trailer, it will be over 6000 lbs loaded, and will have approximately 750 lbs of tongue weight.
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