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Old 05-22-2011, 12:39 AM   #25 (permalink)
Cyborg ECU
California98Civic's Avatar
Join Date: Mar 2011
Location: Coastal Southern California
Posts: 5,211

Black and Green - '98 Honda Civic DX Coupe
Team Honda
90 day: 64.33 mpg (US)

Black and Red - '00 Nashbar Custom built eBike
90 day: 3671.43 mpg (US)
Thanks: 1,853
Thanked 1,552 Times in 1,056 Posts
Yes! I finally found the weight for the crappy Kelly Ultra GT tires I put on my car a few years ago: 19lbs. They are 185/65-R15s. I can switch to Bridgestone EP100s at the larger size of 205/65-R15, get the LRR benefit and a 5% diameter increase while only gaining one pound per tire/wheel, maybe eight pounds total added rotating mass. That change alone could be a 10%+ FE gain on my old car.

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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