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Swivel on it
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Discussion Starter · #1 ·
Have you compared the speed readout of the GPS compared with the reading on the speedo? What is the average error? Just curious :)
 

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Fast Pack Slow Guy
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On my BMW, it's about 3 to 8kph, depending on the speed. But my speedo is analog which isn't better than guesswork anyhow.

I watch my GPS for speed readings now and ignore my speedo.
 

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mine is nearly spot on compared to my van.same as mileage etc..works great.does drop sattelites sometime when its real ugly outside or iam in the bush with the dirtbikes.

keeps mileage,average speed everything.theres a pic in my gallery froma ride.
 

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About 10kmh off at 100kmh on the bike. Spot on in the car.
 

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Gear Driven Cams
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According to my Garmin 76cs, the speedo is typically about 8-10 km/h high at highway speeds on my VFR. It seems just under 10% error from 30-120km/h.
 

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Error is a percentage and varies from bike to bike ... not only is it different from bike to bike and model to model, it is also effected by changes in tire, tire pressure and driveline changes (ie: sprockets and chain)... there's no set % of error...it's all over the map.

buy a GPS, a yellow box or speedohealer and be done with it. or just ride... who looks at their speedo anyways?
 

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Swivel on it
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Discussion Starter · #10 ·
Already have a calibrated speedohealer. I was just curious as to what manufacturers typically have what error.
 

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like I said.. there's nothing typical about error. It's all over the map.
Yes yes yes. I think we get what your saying for the 5th time. That being said have a look at the Speedohealer site, they have some averages there.
 

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Gear Driven Cams
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Oh, and the error has been 8-10% on two Honda Civics i've owned (different years) and the Mazda3 I currently own. And in a Toyota Celica and a Rav4. I was surprised how constant the error was between all the vehicles.
 

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Poser Emeritus
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Have you compared the speed readout of the GPS compared with the reading on the speedo? What is the average error? Just curious :)

Honda is plus/minus 3

BMW GS's 1150's read 8-13 km slow depending on tires

the solution was to put the 1150RT gear into the drive unit then almost 100% accurate
ODO was off as well read high increasese service intervals - good for dealer
 
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