went from 39 to 43 MPG
I live in Chicago, and I was noticing very poor MPG since the weather turned cold. I hadn't touched my tires since my last oil change in November.
I added 8lbs to each tire, bringing them up to 33 lbs each (yes, they went down to 25 lbs from the cold weather!). My mileage is up to 43 MPG now! (Normally 51 MPG in warmer weather)
Stephen
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