Temperature significantly affects tire pressure. As temperatures drop, the air molecules inside the tire move slower and closer together, reducing the air volume and thus the pressure. This phenomenon is analogous to a balloon shrinking in cold air. For instance, a tire inflated to 35 psi at 70F might read closer to 30 psi at 30F.
Maintaining proper tire inflation is crucial for vehicle safety, fuel efficiency, and tire longevity. Underinflated tires increase rolling resistance, leading to reduced fuel economy and increased tire wear. They also compromise handling and braking performance, potentially leading to accidents. Historically, understanding this temperature-pressure relationship has become increasingly critical with the prevalence of tire pressure monitoring systems (TPMS) in modern vehicles, which frequently alert drivers to low pressure during colder months. This awareness promotes proactive maintenance and enhances road safety.
