Thread: 5% larger tires (effect on odometer/MPG calculations?)
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Old 08-24-2019, 06:08 PM   #36 (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
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Quote:
Originally Posted by IsaacCarlson View Post
I know our 2006 rav4 is off a bit and they are calibrated the same. There are several tire sizes offered and they don't bother to change it for each size.
Yes. Same with the 1990s Civics. Different trim levels had different gearing and tire sizes but the speedo sensors all showed 60 mph at about 1025 RPMs of the sensor. Also, I think my speedo dial was painted slightly off center so that everythi g is reported 2 mph faster than it might have been. Precision instruments!
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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.
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