The manufacturer mentions the recommended PSI of a car’s tire, and they don’t change as per the weather conditions. The ideal pressure for cars is between 30-35 PSI, which is maintained in every weather. During the winters, you may need to inflate your tires more as the pressure lowers down with the surrounding atmosphere. The air takes up less volume, and tires need to be inflated more often. Check your manufacturer’s recommendations and maintain a properly inflated tire.