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California98Civic · 10-25-2013, 01:13 PM

Nice job with the OEM tire identification. The EX might have had a sportier tire, than the DX or the HX. But thanks for the citation.

Doing more calibration tests. today so far, using a good android app "GPS Odometer" I have measured a 4.14% stock odometer undercount on the stock odometer. yesterday, I measured a 4.88 undercount. The app claims to be accurate to within a % and these numbers compare well the 5.5% average undercount I got using ridewithgps.com and a handheld Garvin gps unit. I'll keep testing. But when I change over to the175/70-R13 tires that just arrived for my VX wheels, it will be fun to see of the calibration changes, because if 906 RPM was the stock rate, then these tires should change my calibration from correcting an undercount to correcting an over count on the stock odo.

EDIT: 35.93 / 34.31 = a 4.72% under count on the odo, as measured by GPS Odometer (Android tablet app).

10-25-2013, 01:13 PM	#35 (permalink)
California98Civic Cyborg ECU 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 Thanked 2,172 Times in 1,469 Posts	Nice job with the OEM tire identification. The EX might have had a sportier tire, than the DX or the HX. But thanks for the citation. Doing more calibration tests. today so far, using a good android app "GPS Odometer" I have measured a 4.14% stock odometer undercount on the stock odometer. yesterday, I measured a 4.88 undercount. The app claims to be accurate to within a % and these numbers compare well the 5.5% average undercount I got using ridewithgps.com and a handheld Garvin gps unit. I'll keep testing. But when I change over to the175/70-R13 tires that just arrived for my VX wheels, it will be fun to see of the calibration changes, because if 906 RPM was the stock rate, then these tires should change my calibration from correcting an undercount to correcting an over count on the stock odo. EDIT: 35.93 / 34.31 = a 4.72% under count on the odo, as measured by GPS Odometer (Android tablet app). __________________ 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; 11-10-2013 at 10:09 PM.. Reason: typo: "in" changed to "if"