Alright its early morning with brisk 40 degree temperatures. The sun is just rising and we're preparing to move on to the next campground. Part of my usual list is checking the tire pressure. So I've wondered ... what should my tire pressure read? I know at 70 degrees it should be 110 PSI.
I've heard the rule of thumb is about 2% PSI per 10 degrees. So 2.2 PSI per 10 degrees means 103 to 104 PSI would be a good reading at 40 degrees?
This seems to hold also for driving conditions. The tire temperature is roughly 130 degrees when driving. That would be a 60 degree shift and I would see about 12 or 13 PSI increase. My Valor TPMS usually reads in the 120-125 PSI during normal driving.
Is this what others see? How do you handle pressure checks at different temperatures?
I've heard the rule of thumb is about 2% PSI per 10 degrees. So 2.2 PSI per 10 degrees means 103 to 104 PSI would be a good reading at 40 degrees?
This seems to hold also for driving conditions. The tire temperature is roughly 130 degrees when driving. That would be a 60 degree shift and I would see about 12 or 13 PSI increase. My Valor TPMS usually reads in the 120-125 PSI during normal driving.
Is this what others see? How do you handle pressure checks at different temperatures?