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Originally Posted by ricqik
You guys forgetting something. Remember that when the tundra first came out it had the strongest frame as I remembered toyota claimed. Back then the domestics are already rated to tow more, well into the 8k range, even with a weaker frame. It wasn't until the past few years that everyone upgrade to boxed frame, only then did they have a stronger frame and not by much. Well, I wouldn't call it stonger, just more rigid. Rigid doesn't always mean strength, why else would semi's not have rigid frames. You don't want to snap a frame cuz it won't flex to absorb the torque. Currently it's not the frame I'm worried about, it's the bearings, brakes, axles, gears, and it's light weight.
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Absolutely correct... there are a lot of things that make a great towing truck handle the loads, and most of them, just as you mentioned, are not conducive to a plush ride. Most of these also move in various degrees with the suspension. Also as you mentioned, big wheel bearings are a must if there is going to be a heavy tongue load, so long hops with a heavy load in the Tundra is not a wise idea.
I used to drive around in a F350 and F550 which rode like bricks, but they could pull anything. I'd put a full ton on the flatbed when driving "without load" just to soften things up A BIT. Nobody wants this for daily driving though, so we compromise.
My Tundra is great, but even pretty lightweight enclosed trailer bogs her down due to the wind resistance. The 4.7 is nice, but when it comes to towing, it's kind of a pooch. Don't think I'd ever consider pulling even 8000lbs even if it was rated for it. Big displacement diesel if you do this a lot.