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Can someone tell me how far off an 06 1800 speedo is with stock Dunlops? Thanx. As in 75mph indicated would be what actual.
 

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on my 07 ...
66 indicated on the speedo equals about 62-63 per the GPS.

Dennis
 

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My '06 with OEM Dunlop D 250's is running 70mph at an indicated 75mph. Two weeks ago I installed the www.speedohealer.com and now have an accurately displaying speedometer. Except for having to remove many body parts/panels the speedohealer is very simple to install, program and use.
Hope this helps! :)
 

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On my '06 when I am indicating 75 mph my GPS says 71 mph. That is with stock Dunlops.
 

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It reads to high by 7%.
 

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My 06 speedo is 3 MPH off. It reads 3MPH higher than actual. I testti=his weekly with my GPS - not the one that comes on the bike. at 3000 RPM I am doing 70 MPH. Hope this helps. BTW - It affects your Odo also
 

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I just checked my '07 w/my Garmin from my other bike. About 5mph at 70 and above.
 
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