Ever since I bought my bike ('81 Seca 750) the speedometer, odometer, and trip meter have been off. When I am going 55mph, the speedo reads 50 and when I am going 30 mph the speedo reads about 27. I have also noticed that the trip and odometer are slow too. The front tire is still the stock size, any idea of what could cause this?
actualy 27-30 is not a big deal,most speedos are not 100 percent . But if you think it's that far off pull the cable and check for binding ,lube while you have it off.
I don't think there is anything wrong with it. I think that sounds like the correction that I've read about before.