I’ve heard that maintaining your car tires improves gas mileage. Is it really true? –Daryl B., Allen, TX
Improperly inflated tires require more energy to maintain speed, which burns gas. Blow those wheels up right and you can improve your mileage by around 3% compared with underinflated tires. “Check the sticker on your car’s doorjamb and it’ll tell you what pressure to use on your tires,” says Tony Quiroga, senior editor at Car & Driver magazine.
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