Wrong speedo reading

[Iowvicar]

Just brought a 1000 today and have discovered that the speedo is ready 10 mph faster than the car is car 70 bike 80 car 80 bike 90 is this normal or can the speedo be adjusted to read correct

[chris1200]

Check your Sat Nav speed. All speedo's are out as a matter of course, as your cars will be.

[greywolf]

Around 8% fast is typical. Do you have a first or second generation 1000, Vee or Veek according to my sig? There are plug and play solutions like the HealTech Speedohealer and the 12oclock labs SpeedoDRD that interrupt the signal and adjust it as needed. The Vee units are available as plug and play kits while the Veek needs a universal model that requires some cutting and splicing. The Veek doesn't have a dedicated speed sensor but interpolates speed from the ABS sensors and doesn't run the speed signal, power and earth wires through the same connector. Be aware if you install such a unit, the normally ~2% high odometer will read lower than actual mileage.

[Hugh Mungus]

If the sprocket sizes have been changed it can affect the speedo. Easy enough to check by looking for the sprocket size stamp or counting the amount of teeth.
So check the speedo against a sat-nav as Chris says and then follow Greywolf's suggestions.

[greywolf]

A sprocket change will make a difference on a Vee or a Glee but not on a Veek or a Wee.

[Hugh Mungus]

Worth noting Greywolf