Thread: Taller Tire Test (5.7% MPG increase observed on Honda CR-Z @ 55-65 MPH)
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Old 10-28-2012, 03:12 PM   #25 (permalink)
California98Civic
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Join Date: Mar 2011
Location: Coastal Southern California
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Black and Green - '98 Honda Civic DX Coupe
Team Honda
90 day: 66.42 mpg (US)

Black and Red - '00 Nashbar Custom built eBike
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Quote:
Originally Posted by UltArc View Post
cars calculate by axle turns. If one had 1 axle turn with 15s, then they would go so far on one axle turn. If one increase size to 20s, the cae moves way further for one axle turn.
Yes, which means the stock gauges would be under-counting mileage and speed when a larger diameter tire/wheel is used. The dash shows one mile traveled, when perhaps 1.25 or 1.33 was actually traveled.
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See my car's mod & maintenance thread and my electric bicycle's thread for ongoing projects. I will rebuild Black and Green over decades as parts die, until it becomes a different car of roughly the same shape and color. My minimum fuel economy goal is 55 mpg while averaging posted speed limits. I generally top 60 mpg. See also my Honda manual transmission specs thread.



Last edited by California98Civic; 10-28-2012 at 03:22 PM..
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