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CentralMass

(15,265 posts)
5. Tire tires lose or gain 1-2 pounds per square inch (PSI) for every 10℉ change in temperature7
Sun May 12, 2019, 02:14 PM
May 2019

However your question is tricky. When you say warm do you mean the ambient air temp or warm as in you driven the car prior to inflating them.
Below is a link to a really good article on the subject.





https://www.tirerack.com/tires/tiretech/techpage.jsp?techid=73


Latest Discussions»Culture Forums»Automobile Enthusiasts»Checking and filling tire...»Reply #5