I tow in 4x4 hi but only in winter when it’s necessary for traction in the snow. If your trailer is connected properly and you have good tires I don’t see any advantage to using 4-hi in rain.


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This is no compact or mid size SUV. Its about as real a 4x4 truck transmission system as you can get from a large SUV.

All wheel (or Full time) drive is NOT the same 4 wheel drive we have in the Tundra/Sequoia. Google the difference.

Also, you could run 4x4 all the time if you wanted to. Its just a little silly and harder on the drive system in general to do that all the time. But its even more silly to run 4x4 while towing at highway speed.

 

The Sequoia has a center differential and it is acceptable to drive on hard surfaces in 4x4 hi per Toyota and the owners manual. The Tundra does not have a center differential and cannot be driven on the highway without excessive wear or damage. The sequoia is unusual in having a center differential that allowes the front and rear wheels to rotate at different speeds when in 4x4 hi. I think it provides an extra measure of safety in wet conditions. I’m just curious if anyone else feels the same way. I have the full tongue weight on the rear and have had the rear wheels slip going up a steep hill at 40 mph. Will not happen in 4x4 high.

 

If you need 4wd while towing, use it.



Interesting that you need it though, I would think that there would be enough tongue weight to plant the rear tires. At 7000# the Sequoia is maxed out. I wonder if you are losing traction because the rear end is really squatting and reducing the tire contact patch due to excessive camber? Anyway, that's a pretty big load. More than I would want to pull.



If you are thinking of moving to a truck, IMHO, you should be looking at 3/4 ton vehicles. You won't need to worry about traction (or anything else) with one of those. A 3/4 ton truck would have no problem with a 7000# trailer, It would be much safer and less taxing to drive too.