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Tire pressure plays a significant role in fuel efficiency for cars. Underinflated tires can decrease gas mileage by up to 3%, while overinflated tires can increase it by up to 5%. Proper tire pressure is crucial for maintaining optimal vehicle performance.

How Tire Pressure Affects Fuel Efficiency

1. Underinflation: Decreases fuel efficiency, leading to increased fuel costs and reduced vehicle range. Typical underinflated tire pressure ranges from 6-10 psi.
2. Overinflation: Increases fuel consumption, resulting in higher gas bills. Excessive tire pressure can lead to reduced handling and increased wear on the tires and wheels.

Tire Pressure Monitoring Systems (TPMS) and Fuel Efficiency

Tire pressure monitoring systems are designed to alert drivers when tire pressures deviate from the recommended level. Many modern cars come equipped with TPMS, which can help maintain optimal tire pressure and fuel efficiency.