Towing capability is one consideration, the other is pin weight. A Tundra, depending on configuration and options has a payload of about 1500lbs +/- a couple hundred pounds. If you figure about 20% pin weight on a fiver that's a max of about 7500lbs for the loaded fiver. I'm not aware of any of fivers that size. Plus you need to figure passengers, cargo, and fuel in that 1500lbs. He was over the GVWR for the truck, no doubt.
Towing at 75MPG on ST tires which are rated at 65MPH is a whole different discussion....
Dave
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Dave, Barb, and Paisley the Wonder Wiemeraner
Was - 2015 3160RL Legacy Edition & 2014 F350 6.7l PSD SRW Platinum
Now - SOB
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