Thor Forums

[Chance]

Originally Posted by Quattro

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1. If your vehicle has not been weighed:
Do not let the pressure get below the placard recommendation from your RV

2. If you vehicle has been weighed:
Run no less than the recommended pressure for the actual loads

It is as simple as that. As temps get colder, you will have to add psi to get up to one of those points described above.

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As you say, “no less than”, which can leave enough margin so you don’t have to readjust for cold-weather deflation if you don’t want to.

As an example, let’s take the OP, who has tires rated at up to 120 PSI, yet the chassis only requires 82 PSI when fully loaded to maximum chassis/axle loads.

If he sets tires at ~ 90 ~ 95 PSI in warm Florida, he shouldn’t have to adjust just because it gets colder (short of North Pole). Because there is a lot of difference between the required 82 PSI and the maximum 120 PSI tire rating, he doesn’t have to worry as much as guys driving around in overloaded motorhomes and where tires are at maximum pressure. Those are the guys that seem to report tire failures most often.