Thanks for all the replies. It's been a couple of months since I did the figures, however, I think they still are meaningful. I really did
like the Tundra. And it looked like it would pull the trailer. And if your data show that it will tow, that is good (but too late for me
). Here is how I came up with the figures.
* Looking at the specs on the Chevy web site, some 1/2 ton trucks (those with up to 16,000 CGVWR) appear to be able to tow the weight, but they have too low a GVW (last figure in the spreadsheet). So it appears that they will tow, but too much weight is on the truck.
* I got my CGVWR from the dealer. And it looks in line with the kind of truck a Tundra is (1/2 ton). Even if we factor in a larger tow value for the Tundra, the GVW is still that of a 1/2 ton truck and appears to be loaded up too much (last figure in the spreadsheet)
* I got the curb (dry weight) from the website. Though some definitions vary, it appears that curb weight is GVW - load capacity. Even if we take dry weight as curb weight - gasoline it still is overloaded.
* Looking at the rear springs, the Tundra (and other 1/2 ton trucks) have at least one less leaf than the 3/4 ton. This may explain the exceedance of the GVW.
* The preponderance of replies is in line with the need for a 3/4 ton. However, maybe those are the only persons who answered.
Thanks for the input!
More info on other subjects:
The whole rig is now 43.5 feet long. That's three feet longer than my former gross length. However, the stability of tow is worth it. On other topic comments:
* I was also surprised by the quick downshift on a steep grade coming downhill in tow mode! Like as to make me mess the leather! But then after reading about it, it made sense, and I have not had that emotional problem since.
* I get an average of 11 on a trip at 7500' elevation with a generally gently sloping highway.
* Diesels? Not for me. I had a Peugot diesel in 1985 and it was too "interesting" an experience, but that is another story...
* As a sidelight, I always thought the song by Steely Dan was "bringing in the sheaves", not "reeling in the years". Just found out last week... Shows old dawgs like me can learn new things, they just won't admit it...