Author Topic: Speedo question (I know beat to death)  (Read 3904 times)

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  • Offline Grabcon

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    Offline Grabcon

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    Speedo question (I know beat to death)
    on: Nov 11, 2017, 12.41 pm
    Nov 11, 2017, 12.41 pm
    A couple of things. I have only had the CT a week and Yesterday I finally got out since some decent weather showed up and my wife and I clicked off about a 100 miles. Now after reading many things on this forum the consensus is that the speedo is off about 10%. Which is fine, all my Hondas are off between 7 and 10%.

    But to my surprise comparing the speedo against the GPS speed the speedo was dead nuts, until about 70 MPH then the speedo was bout 1 MPH fast compared to the GPS.

    So I am thinking that there is a speedohealer hiding somewhere under the covers on the bike. Now I am okay if there is, because I was most likely going to put the one on that I have sitting is a parts box, but I just want to hunt it down to verify my assumption. So where would be the logical location to hide one of these little guys?

    I ran a Speedohealer on my ST1300 for a number of years so I am familiar with the pros. cons and odometer issues that occur.
    In The Barn
    2016 VFR1200X - Mine, 2016 BMW F700GS - The wife's bike, Brad

  • Offline Maritimer

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    Offline Maritimer

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    Re: Speedo question (I know beat to death)
    Reply #1 on: Nov 11, 2017, 02.58 pm
    Nov 11, 2017, 02.58 pm
    Actually, I have a 2016 CT and the speedo is about 10 km/hr over the GPS speed when I'm over 120 km/hr. When I drive 80 km/hr, the speed is lower, maybe 5 or 6 km/hr different than the GPS speed.

  • Offline Dave56   gb

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    Offline Dave56

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    Re: Speedo question (I know beat to death)
    Reply #2 on: Nov 11, 2017, 05.32 pm
    Nov 11, 2017, 05.32 pm
    I recently did the same, took my 2015 DCT out using my recently acquired TomTom Rider 450 and was surprised to see that when the GPS was reading 70mph the CT was only registering 63mph  :187:
    I must admit they I was not expecting it to be that far out but thankful that it wasn't the other way round but I ask the question - am I right to assume that the GPS is totally accurate?
    "The more the miles, the bigger the smiles"

  • Offline Hartley   england

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    Offline Hartley

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    Re: Speedo question (I know beat to death)
    Reply #3 on: Nov 11, 2017, 05.52 pm
    Nov 11, 2017, 05.52 pm
    Same here Dave
    Speedo on both my CTs has read consistantly 10% high.


  • Offline pistnbroke   england

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    Offline pistnbroke

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    Re: Speedo question (I know beat to death)
    Reply #4 on: Nov 11, 2017, 07.04 pm
    Nov 11, 2017, 07.04 pm
    I was told that the GPS is much more accurate because it is fed digitally from satellites, and we all know from past threads that the manufactures miss read the speedo by 10% on purpose for safety reason.
    So if you are doing 100 via the GPS your speedo should read about 90-91, and if you are doing 70 then your speedo should read about 63-64 approximately.
    If you are in a speed restricted area any where and your speedo reads that lowered speed then you should theoretically be under that reduced speed.
    Hope that sound as right as it does in my head.  :027:
    keep it shiny side up !!!

  • Offline Hartley   england

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    Offline Hartley

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    Re: Speedo question (I know beat to death)
    Reply #5 on: Nov 11, 2017, 08.04 pm
    Nov 11, 2017, 08.04 pm
    Think you may have that the wrong way round Jon.
    GPS reads 100 your bike reads 110.
    Bike over reads.


  • Offline Maritimer

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    Offline Maritimer

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    Re: Speedo question (I know beat to death)
    Reply #6 on: Nov 11, 2017, 08.59 pm
    Nov 11, 2017, 08.59 pm
    My Varadero was a bit more accurate between the speedo and the GPS. I once had a BMW 1991 R100GS and it was as bad or worse than the CT. According to BMW it was acceptable.



  • Offline pistnbroke   england

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    Offline pistnbroke

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    Re: Speedo question (I know beat to death)
    Reply #7 on: Nov 11, 2017, 09.42 pm
    Nov 11, 2017, 09.42 pm
    Cheers Hartley, and ive only had 1 drink.
    Glad someone knew what i meant.  :745:  :027:  :028:
    I'll be daft when i grow up.  :164: :034:
    keep it shiny side up !!!