Vibrations in the seats....

[Trigganometry]

If you’re seeing that much variation of pressure from cold to hot then you need to vent the air in tires and start over. Sounds like a ton of moisture in the current fill. That would make the swings you’re referring to possible.

Mine see a 3 to 4 psi change cold to hot on normal air. Went to nitrogen a few months ago and see 2 to 3 change now. Air is dryer is all that’s from.

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[omniphil]

If you’re seeing that much variation of pressure from cold to hot then you need to vent the air in tires and start over. Sounds like a ton of moisture in the current fill. That would make the swings you’re referring to possible.

Mine see a 3 to 4 psi change cold to hot on normal air. Went to nitrogen a few months ago and see 2 to 3 change now. Air is dryer is all that’s from.

So you are shooting for 33-34 PSI when the tires are warm?

 

[Joeiconic]

You‘re overthinking it. Just set the tires to the pressure indicated on the door when cold. Trying to adjust to a certain warm temp is bassackwards. Ford and Hankook/Bridgestone have already done the math for you.

 

[Megawatt]

Or you could have a defective rear axle like my 2021 with 7000 miles on it. Waiting on parts and been at dealer for two weeks now. Look at drivers rear wheel, first sign of trouble is diff fluid leak on inside of wheel.

 

[Trigganometry]

So you are shooting for 33-34 PSI when the tires are warm?

As another said already. Use cold pressure on door. To know if you’re at correct pressure chalk like the tires and drive a short distance and check. The chalk should wear evenly. If not it will tell you if over pressure or under by how it wears off. That’s the ultimate test to really know where you stand with the pressure you’re at.

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