Another RPod Question

Ok, I have another question.  I'm looking at the Rpod brochure, and it lists the "Unloaded Vehicle Weight" for the 173T at 2245, and the hitch weight at 282, and the load capacity at 1537.

Then I go to RVNation, which I like looking at because of the detailed photos they post, and they have a photo of a sticker on a 173 T that says "Dry Cargo Weight" 2463 and Cargo capacity of 1302.

These numbers don't match the numbers on the brochure at all.

Where do I find the definitions for all these terms, and how do I figure out the TOTAL weight of the TT and its cargo capacity, so I can figure out what our small SUV can pull?  We have an Xterra that's rated to 5000 pounds.

When evaluating these Rpods, do I go by the brochure and add the unloaded vehicle weight, the hitch weight, and the load capacity?   If I go by the numbers on the brochure, the vehicle weight and hitch weight are 2527, and if I add a load capacity of 1537, that's 4064.

How do those numbers relate to the numbers on the sticker of the 173T I'm looking at on RVnation?

And further, even though the xterra says it's rated to 5000 lbs., my husband is concerned about being able to tow that much, and wants to keep the weight much lower.

I understand that there's no "one answer," but if someone could clear up these terms or point me to a website where they are all defined and I can figure it out, that'd be great.

Also, how much do you think I should figure our gear will weigh for four of us?  Does everyone generally travel with an empty or almost empty water tank?

Clearly, there is a lot more to buying a TT than just going and picking one out . . . must look at Amazon.com for "Travel Trailering for Dummies."

The UVW of 2245 in the brochure is the weight of that model/year 'pod with standard equipment.  Some things like A/C are optional, and that would be added to the UVW to get you to 2463 on that specific 'pod (with the leftover capacity for your own stuff of 1302).  Subtract from 1302 any water you carry (black + gray + fresh) at 8 pounds per gallon, don't forget the 6 gallons in the water heater.  Also subtract the weight of the battery and the propane in the tank.  Finally any clothes, dishes, pans, food, chairs, etc. that you load inside.  For most people you won't come close to the max capacity unless you travel with all the tanks full so don't worry about adding it up.  99% of the time you'll only have the fresh water tank full when you leave to go dry camping, and coming back all the tanks will be empty because you dump the black + gray at the campground.