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Doing 60 on the speedo,GPS says 58.70 and GPS at 68? Guess not gonna get any speeding tickets.Now I know why everyone behind me is pissed off when I'm doing 55
The 14 is farther off than any of the other bikes I've had. The speedometer is about 8% optimistic when compared to the standalone GPS. At an indicated 80, the GPS says I'm really doing about 74.
jt
BTW, Google maps isn't the best resource for calculating shortest route which is what the IBA is checking for certifications, and Harley's Ride Planner is no better. Basecamp, Mapsource, or Microsoft Streets & Trips (just discontinued) allow for that routing method.
Mine was off by +4 miles for every hundred miles traveled when compared to the mile markers in several states. My 02 was within a few tenths of a mile over a hundred mile stretch. My 09 was +2.5 miles over a hundred mile stretch. It seems that the degree of error just keeps increasing over the years. So much for technology.
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