Green Tip #145: Avoid Underinflated Tires

If you want to save gas and reduce auto maintenance you should avoid underinflated tires.  You can improve gas mileage consumption by up to 3.3 percent by keeping your tires properly inflated to the manufacturers suggested pressure rating. Underinflated tires can lower gas mileage by 0.3 percent for every 1 PSI drop in pressure which can really add up. Lastly, underinflated tires are less safe and don’t last as long as properly inflated tires.

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5 thoughts on “Green Tip #145: Avoid Underinflated Tires

  1. Part of buying tires at Costco is checking the inflation monthly. I also have them rotated (free) every 6,000 miles. Maintaining my car makes it last much longer (16 yrs. old). I could say it is a frugal thing, but I hate the idea of getting stranded. The added MPG is nice too.

    1. Costco does that for you? I didn’t even think our costco had an automotive department. I am sure I can buy the tires there but I didn’t think they would do service as well. Tire rotation is a great idea to improve mpg.

    1. I read somewhere many moons ago that over-inflating, especially in winter, can cause big issues if the temperature happens to spike upward with one of those weird winter days where the temps go above freezing.

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