I wonder how it felt without the weight of that fifth wheel.
I would never think that auto engineers ever design with the thought of selling more tires. Therefore, they are considering safety (maybe including their own liability), handling and comfort. It would be wise to consider each of those when doing comparisons of tire pressures.
There are huge numbers of reasonable people who would simply not care if they spent an extra hundred dollars per month to have a more comfortable ride. And that's just one issue.
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