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Old 03-26-2014, 10:50 PM   #9 (permalink)
California98Civic
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Join Date: Mar 2011
Location: Coastal Southern California
Posts: 6,299

Black and Green - '98 Honda Civic DX Coupe
Team Honda
90 day: 66.42 mpg (US)

Black and Red - '00 Nashbar Custom built eBike
90 day: 3671.43 mpg (US)
Thanks: 2,373
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What other differences are there in the wheels and what tires will be on each? Width of tire and weight of tire counts. Diameter of wheel counts. Eight pounds per wheel can be multiplied by 2 or even 4, depending. That's because it is rotational mass. So your're looking possible at a 64-128 pound *effect* from lighter wheels. And as long as long as you don't cancel that out with heavier, wider, stickier tires, you could see a modest benefit. BUT... if you compou d the benefit by getting same weight or lighter tires, narrower, and of the low rolling reststance grade... even more benefit.... check tirerack.com extensively.
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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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