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Old 05-17-2011, 09:15 PM   #59 (permalink)
suspectnumber961
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Join Date: Mar 2008
Location: I flitter here and there
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highcountryexplorer - '86 Nissan 720 KC 4x4 ST with fiberglass cap
90 day: 21.78 mpg (US)

Elroy - '03 Ford Focus ZX3 w/Zetec DOHC engine
90 day: 32.89 mpg (US)
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Quote:
Originally Posted by Enginator View Post
Running tire pressure at 45 psi or higher increases danger of loss of control, bouncing and the suspension is NOT tuned for it. It can affect stopping distance. Plus the tires will not last as long.

Last time I checked last fall, about the cheapest tires out there for a GEO for instance were around $50 each and rising. Saving $75 dollars over a year on fuel you would probably burn more than that off the overinflated tires.

Different story for engineered, lowered rolling resistance tires. You will save approximately as much in fuel as the extra cost of the tires. So it is a break even.

Enginator
For a decent ride and handling maybe 1/2 way between the door sticker and the sidewall max?

Assuming a 5% mpg gain from LRR tires...they will pay for them selves over 40-60K miles?
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