speediq99 wrote:
Attached are the door stickers on truck
Combined weight of occupants and cargo not to exceed 3341
Front Gawr 5200lbe
Rear gawr 7230lbs
Vehicle Gvwr 11500
Weight on trailer
Uvw 14344
Hitch 2686
Gvwr 16800
As noted elsewhere, Grand designs are generally a bit more pin heavy than perhaps other brands. You should assume 22-23% of your weight will be on the pin.
You should also assume that you will be at GVWR for trailer, or close to it. Trust me, over time, you will add weight and before you know it, you will be at max or above. Happens to most/all of us at one point or another.
So, lets just go with 16,000 for your trailer, loaded. Assuming 23%, you will be at 3680 pin weight. Your payload is 3341 (total weight of cargo and occupants will not exceed 3341). Payload has to take into consideration everything, including driver, all passengers, and all cargo. At 3680 pin weight, you are already 340 pounds over payload WITHOUT taking into consideration any passengers or other cargo.
Now, the pin weight percentage unloaded is 18%. As you add weight in the front storage area, almost all of that goes on the pin. There is virtually no way to physically maintain the 18% pin weight as you add stuff to the trailer. If you can keep it at 20% you will be doing very well. Undoubtedly, it will be above 20% and in neighborhood of 22-23%.
No matter how you do the math, even assuming as low as 1500 weight added, and 20% pin weight, you will be over payload. 15844 (dry weight plus 1500lbs) times 20% is 3169. Subtract that from 3341 payload only leaves 172 lbs left for passengers and the hitch itself.
There are people, like myself, who use all the numbers to make informed decisions. Gross Axle Weight Rating is one of those. There are others who swear by payload is the only number to exceed, and if you exceed that by a pound, your truck will self destruct in seconds. You need to know the unloaded weight of your drive axle, add the pin weight as well as hitch weight (usually about 200 lbs) and any passenger weight on the rear axle to decide if you cn stay within the axle weight.
All this to say I think no matter how you slice it, a 16,000 trailer is dually territory.
Mike