Curious about tire pressure on hot pavement

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Originally Posted by buvens

I have a Chevy 1500 with tires that say 44# psi at so much load and a trailer with
6 ply tires that recommend 50# psi

Was just curious what pressures I might see driving on hot highways in 90 degree weather?

Took the truck to fill it up with gas a couple of days ago and without the trailer the tires were running 49-50# psi.

Checked the truck tires the next morning and they were all at 44# psi.

Figured with trailer on the highway it would go some higher.

Was wondering what others experiences are?

Maybe even temperature also. Don't remember what tire temps were right now.

Thanks...

Always set your tire pressure when the tire is "cold". There is no reference to a certain temperature for the meaning of cold. That reference is made to mean; When the tire is at ambient air temperature of the surrounding air. If it's 90 degrees outside and the tire has not been in use (cold) then set it to the correct pressure that is required....in your case, 44 for the truck and 50 for the trailer. The next day, you might have travelled to a location where the ambient temperature is 70 degrees when you wake up and before you start travelling. Adjust the air pressure to 44 psi for the truck and 50 for the trailer.