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Old 11-21-2010, 01:39 PM   #25 (permalink)
MetroMPG
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Join Date: Nov 2007
Location: 1000 Islands, Ontario, Canada
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Blackfly - '98 Geo Metro
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Last 3: 70.09 mpg (US)

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90 day: 52.71 mpg (US)

Even Fancier Metro - '14 Mitsubishi Mirage top spec
90 day: 70.75 mpg (US)

Appliance car - '14 Mitsubishi Mirage ES (base)
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I don't think this thread is meant to suggest that wider is automatically better.

I would assume that "wider = lower Crr" is true when you compare tires with otherwise identical design & materials.

If you switch tire design, then it's apples & oranges. Maybe that's what happened with the Prius people.

EG. I've shown that my 155/80/13 tires roll significantly farther than my 175/70/13 tires. But (A) they're different brands, and (B) very different tread designs. (I can't speak about (C) the materials in them).
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