How much of an increase in mpg can I expect with overinflated tires? - Fuelly Forums

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Old 10-11-2007, 04:31 PM   #30
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The difference is not readily discernable to the eye...use a pyrometer and take temps across the tread...you WILL see a difference. The higher temps in the middle show an overinflated tire and uneven wear will result. You just have to weight the cost savings verses the wear factor...you have to assume that the vehicle is properly aligned

Higher pressures are used in Auto-X to keep tire squibb to a minimum...you dont' have time to build up heat on a run

Lower pressures are used in Road Racing...heat builds and psi increases

For the street you are pretty safe unless you run underinflated...BOOM!!!
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