I forgot to do this with my Ranger when I went from 14 to 15 inch wheels. I use a 19.9 mile trip I do about 4 times a week to check the distance and compare the two. The Ranger was off by 2.6%. The Kawasaki with a 15 (versus 14 stock) front sprocket was off by 7.14%.
Since the fuel log uses actual distance travelled I just bump the odometer reading by the correction amount, to get the actual distance within 1/200th of exact distance.
The calculation is based on the average recorded distance of at least 10 different vehicles over the last 8+ years of driving-riding that route, both ways.
On the Ranger, I found my reciept when the wheels and tires were changed which was 12/11/12 and my fuel log showed a refill on 12/12/12, so I just used the +2.6% correction on every log entry after that point to get it correct and current.
regards
Mech
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