Took my bike for a long ride today to a destination that I know for a fact is 68 miles. My '06 SG tells me it's 77 miles. That's a prety dramatic difference.

Anyone else notice this? Is it adjustable?

 

During some speedo research recently, I learned that most vehicle speedos over-indicate your speed, which--so the theory goes--is there way of helping you not to get speeding tickets. I think it's more likely their way of ensuring that they dont get blamed for speed related accidents that could put them at risk. But 13% over, like your speedo, seems excessive. Did you install smaller tires? change gearing in any way?

 

I checked mine against the freeway mile markers over about 20 miles. Seems to be dead on.

Dakota Digital makes a box that can adjust the signal. Not sure if it will work on the '06 models. Call them and ask. It's the only one I've ever seen.

 

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On that 1933 mile Utah trip last month I checked my speedo, '06 FXDI, against a friends GPS and we were both right on the money for five days straight so it sounds like you go a gremlin some where.












[IMG]local://upfiles/10968/5A966171EA704F1EB98FEBA369961A77.jpg[/IMG]

 

I've read in many motorcycle magazines (while they are reviewing bikes), that motorcycle speedometers are typically off...sometimes by quite a bit. Just this past month, motorcycle cruiser magazine reviewed a new vulcan 900...I believe that speedometer was off by around 10 - 15 percent. This was not the first time I read something like that.

Todd

 

1700 mile trip on my Street Bob with GPS.. Dead on also.............