mvela
Senior Member
- First Name
- Mike
- Joined
- Sep 13, 2018
- Threads
- 17
- Messages
- 1,178
- Reaction score
- 630
- Location
- Orange, Tx
- Vehicle(s)
- 2018 Honda Civic sedan lx 6mt and 2018 Honda Civic hatchback ex auto
Well most of our civics came from the factory with the wheels filled with nitrogen. Nitrogen really doesn’t change with temperature because it is dry. It’s the moisture in the air that expands and retracts with temperature. This is why most people want nitrogen in their tires. I know both mine and my girlfriends car have nitrogen and tire pressure doesn’t changeI've read that a tire's pressure changes about 1 psi for for every 10 degrees F change in ambient temperature. Not driving or having the sun beat down on them. Let's say the car has been sitting overnight in your shaded garage which is 70 degrees F and the tires measure 32 psi. You go back later in he day when it's hot & the garage is now 90 degrees & the tires will be about 2 psi higher.
I have heard that tire pressure should not increase by more than 10% when hot from driving. If it increases by more that means the tires are overheating due to under inflation. I don't usually check my tires when hot, but my other car's TPMS system gives individual pressure readouts & it does increase about 3-4 degrees after driving awhile.
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