ICON did a great job. Only correction is that the GROSS DRY weight listed in your original post is the dry weight of the camper with no options or stuff added to it. So, here goes.
If you can weigh the truck and trailer before you buy it, that would be peachy. Then you will be working from actual data. If you can, report back and we'll walk you through the easiest way to get all the important data.
If you can't weigh it, then all this will be a WAG (engineering estimate). If you could provide the make and model of the trailer being considered, that might help get some real world data from the folks on rv.net
Based on what you provided and my experience with trailers, I would guesstimate that your trailer will weigh the following:
Gross Vehicular Weight (weight of entire trailer, including hitch weight, all cargo) = 5,500 lbs
Hitch weight of loaded trailer = 700 lbs (about 12% of 5,500 lbs)
Both of these could be way wrong.
Ok, so lets do some simple math. You will have to participate. Go out and look at the sticker that is on your truck on the door pillar (not the one on the door, the one on the truck). It should say something like "The maximum weight of the passengers and cargo shall not exceed X,XXX lbs" Mine says 1661 lbs. I thought all these stickers were non-specific, but as it turns out, this particular one IS specific to YOUR truck (at least that's what I've been told). Anyway, mine is spot on correct (I weighed my truck). Now we can do some math.
Ok, take that weight and subtract it from 6600 lbs (the GVWR of your Tundra). This should be a good estimate of what your truck weighs with NOTHING in it. This is what we will use for the following calculations:
11,800 GCWR (Gross Combined Weight Rating of your Tundra. This is the max that the truck and trailer with all stuff in them can weigh)
- actual weight of empty truck
- all the stuff you plan to have in the truck while towing
= max GVW of trailer
6600 lbs GVWR of your Tundra (max your Tundra can weigh)
- actual weight of empty truck
- all the stuff you plan to have in the truck while towing
= max hitch weight of trailer
Substitute in your numbers and see how that compares to the estimated weights I listed above for the trailer you are looking at.
If you aren't going to put a lot of weight in the Tundra while towing, you should be fine with that trailer. If you plan to tow at high altitudes in mountains, you will be disappointed with the towing performance, even if you are within your weight limits.
But, the best method is to actually weigh the truck and trailer. Please give that due consideration.
Tom
Here's an example I provide of the weights I am towing:
11,800 lbs (GCWR of my truck)
- 5000 lbs (actual empty weight of my truck. I weighed it.)
- 500 lbs of water bags (me, wife, 2 kids, 2 dogs)
- 500 lbs cargo (wood, genset, bikes, etc...)
= 5,800 lbs (max weight of trailer I can pull, spec says 6,800 lbs max tow rating)
My trailer weighs 5200 lbs, loaded (I weighed it, several times) I'm good here.
6600 lbs (GVWR of my truck)
- 5000 lbs (empty weight of my truck)
- 500 lbs of water bags
- 500 lbs of cargo
= 600 lbs left over This is the max hitch weight I can handle
My hitch weight is actually 680 lbs. Oops, I'm over weight. Not really. My weight distribution hitch puts that excess 80 lbs back on the trailer axles.
Hope this helps.