3 ms·

> And winter is the time when tire pressure fluctuates the most genuinely curious, why? I thought tire pressure fluctuations were linearly related to air tempe

• Bartweiss 7y ago
  At least in some of the US, quite a bit more. Winter might be swings of >50F, especially night to day, while summer variation is likely to be <40F. I'm not what all weather patterns factor into that, but a major part is that winter air is dryer, and water vapor does a lot to 'buffer' brief temperature changes. That said, I mostly end up checking my tires more in the winter because I care more; if a tire is only a few pounds low I'd still prefer to handle it before I have to go drive on snow during a cold snap.