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Old 06-28-2008, 07:24 PM   #3 (permalink)
Depends on the Day
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Join Date: Nov 2007
Location: Kansas City Area
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Teggy - '98 Acura Integra LS
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90 day: 32.74 mpg (US)

IMA - '10 Honda Insight EX
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Welcome to EM...

As for #1 -- the contact patch area remains the same between tires, so the resistance is similar. It may have an aerodynamic advantage. Search around the site -- a few experiments may shed some light on the idea.

#2 -- Yes, but the check engine light will generally come on (involves cutting power to the injectors).

Best FE to ya...

“If we knew what we were doing, it wouldn't be called research” ― Albert Einstein

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