ANSWERS: 1
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The amount of energy an inflated tire uses depends on the tire's psi, or pounds per square inch of tire. According to the U.S. Department of Energy, a vehicle's appropriate tire pressure is usually noted on a sticker in the driver's side door jam or in the glove box, as well as in the owner's manual.
Source:
The Great Tire-Inflation Debate: What Does It Mean to You?
The relationship between correct tire inflation and energy consumption
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