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07/12/2020 1:41 am
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My car manual says I should increase tyre pressure in winter ie at 40° it is 2 PSI more then non winter temperatures why is that.
2 Answers
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07/12/2020 1:45 am
because pressure changes with temperature.
For example, on a cold day my tire pressure will increase by 20 PSI after they've warmed up.
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07/12/2020 1:47 am
Air temperature can affect tire pressure by several degrees. I know personally I keep my pressures at 34-35 but when I stay up at my girlfriend's house where it gets much colder, my pressures will be 31-32 in the morning.
