cruise control

[swede 2]

when riding the inter state i set my cruise to 70 miles[shown on the info screen]and i noticed the speedo showing 73miles.anybody else noticed this?

[GPL95928]

Most all speedos have a 5-10% error. My truck and all my bikes have all indicated a faster than actual speed.
Now the question is why would the cruise control and speedo differ???

[swede 2]

i guess the next thing to do is check the true speed with a gps

[GPL95928]

I checked it against a radar unit, 34 MPH = 30 MPH.

[w8d4it]

I wouldn't be too concerned.  It is well known that both car and motorcycle speedometers are optimistic.  Helps prevent speeding tickets....

[Glenn]

Originally Posted by swede 2

when riding the inter state i set my cruise to 70 miles[shown on the info screen]and i noticed the speedo showing 73miles.anybody else noticed this?

just a thought. Take your hand away from the throttle and see if the clock speed drops to match the cruise speed you may be exerting slight rotational pressure on the grip causing a small increase in speed. The cruise shows what
You want and the clock shows what you are doing no notice this when cruising recently. It doesn't cancel the cruise set speed as a design feature to allow for small or short controlled speed increase such as overtaking. Try it and see if this helps. Do it only when it is safe to though.

[Chaos]

I set my cruise with the speed on the sat nav. There is a 4 mph difference and I now that my Garmin is more accurate 

Chaos

[swede 2]

70miles on speedo=65miles on gps.cruise set at 70miles=66.5miles on gps and 72 miles on speedo.