lynnsox
New Member
Checked speed with a GPS and by timing several times last weekend. 5.5 mph off. Reads fast. Is this "normal" Hard to believe with modern tech these speedometers are never correct.
SPEEDOMETER?
- Thread starter lynnsox
- Start date
Boris
Well-Known Member
Mines a 2013 model and reads about 5-6 mph fast between 70-80mph. That's compared to my tomtom.
lynnsox
New Member
Mine is a 2013 also. I tested at speeds from 40 to 75. Very consistently wrong at 5.5 mph. Timed and with a Garmin GPS.
Gen1 was 8% off, so 5.5 in that speed range would be about right for your bike. Easy to assume you are going 10% faster than shown.
People bitched and Yamaha fixed it. Gen2 willl show within 1-2 mph low depending on tires being used. (OEM tires are pretty close to 1mph consistently)
People bitched and Yamaha fixed it. Gen2 willl show within 1-2 mph low depending on tires being used. (OEM tires are pretty close to 1mph consistently)
FM Rider
Member
My 2016 with OEM tires read 1.0 to 1.6 mph faster than my GPS but when I switched to Mitas E07 tires the speedometer consistently reads 1.0 - 1.5 mph slower than the GPS.
RicoChet
Member
Yes... It is normal. I Wish it wasn't, but it is apparently normal. In KPH, its almost 8-10% difference from what is read versus what shows on my GPS.
RIVA
Well-Known Member
::021::
jwhuls
Always looking for adventure
I was one that bitched when I bought my first XT. It was easily 10% off. I have a 16 now. it is better.
And I got the 'Ride More worry less" too
That is bullshit. When you buy something you expect it to work. You have to try to make these wrong. The math is too easy.
This is a vehicle industry issue. They are all shooting high. Makes for better gas mileage reports or something. My car, my truck and my bike all show higher than actual speeds.
The New World order keeping us safe by lying about our speeds.
And I got the 'Ride More worry less" too
That is bullshit. When you buy something you expect it to work. You have to try to make these wrong. The math is too easy.
This is a vehicle industry issue. They are all shooting high. Makes for better gas mileage reports or something. My car, my truck and my bike all show higher than actual speeds.
The New World order keeping us safe by lying about our speeds.
RicoChet
Member
I've heard the explanations for why the speedo reads high but I don't buy it. A speedometer should be totally accurate to within 1% of indicated speed, not freaking 10%!
I've resorted to using my GPS as my proper speedometer now... That and memorizing the numbers: 55KPH is really 50, 77KPH is really 70 and 110kph is really 100kph.
I've resorted to using my GPS as my proper speedometer now... That and memorizing the numbers: 55KPH is really 50, 77KPH is really 70 and 110kph is really 100kph.
Calibration is spelled out in the FMVSS regs and internationally harmonized in the UNECE. Being too lazy to look them up and having gone through this multiple times before, I'll just copy the following two bullets from Wiki:
The indicated speed must never be less than the actual speed, i.e. it should not be possible to inadvertently speed because of an incorrect speedometer reading.
The indicated speed must not be more than 110 percent of the true speed plus 4 km/h at specified test speeds. For example, at 80 km/h, the indicated speed must be no more than 92 km/h.
So the 8% in the Gen1 bikes was legal. Manufacturers do it to allow the widest range of tires for production.
The indicated speed must never be less than the actual speed, i.e. it should not be possible to inadvertently speed because of an incorrect speedometer reading.
The indicated speed must not be more than 110 percent of the true speed plus 4 km/h at specified test speeds. For example, at 80 km/h, the indicated speed must be no more than 92 km/h.
So the 8% in the Gen1 bikes was legal. Manufacturers do it to allow the widest range of tires for production.
I put a Speedo Healer on my 13 model right after purchasing it and the speedometer reads within 1/2 mph compared to the GPS. I could have done the math in my head every time I looked down at the speedometer, but it's nice to just look down and see the correct speed.
"I" don't see what the big deal is. The only speedometers that are "certified" accurate are police CARS. Not bikes. And even they are only certified for a finite number of years. Like Checkswrecks advised, manufacturers are required to make sure you don't get an "accidental" speeding ticket. Past that, I don't really mind if my speedo says I'm doing 60 m.p.h. when I'm actually only doing 55 m.p.h. If I was really worried about it I would get a GPS, which apparently everybody except myself has already done.
R
RonH
Guest
I like the GPS just to see how far off the factory speedo is among the obvious uses. Only 1mph off at 60mph on the 2017 Super Tenere, about 4mph off on my 2008 Goldwing, about 4mph off on the 2012 Super Tenere, about 15mph off on a 2008 Yamaha WR250R. The WR was a big mistake in all regards including the speedo. No big deal in 5mph off, but happy the new one is close to spot on.
fraserdog
Member
My 2012 reads approx 8% fast as well compared to my gps,does this in fact also mean that you odo is putting more mileage on? also this must affect the mpg figures shown on the dash?
R
RonH
Guest
The mile ODO error is much less than the speedometer error on the 2012, about 3% mileage vs 8% for the speedometer, so I believe adding the speed healer add on makes miles read like 5% low from fixing the speedometer. On the new Tenere, the ODO error is higher than the speedo error. ODO error still close to 3%.
WJBertrand
Ventura Highway
calibrating speedometers to read faster than reality is a deliberate industry practice. Both bike and car manufactures do this. There are two reasons for it, 1st it's a marketing ploy to make the vehicle seem quicker, faster and sportier than it really is. Secondly, no manufacture wants to be sitting in a court room where, worst case an accident gets blamed on the vehicle going faster than it really was or being sued by owners for getting speeding tickets when they thought they were complying with the law. I think manufacturers even want some margin in the case where an owner might fit larger circumference tires as well.
Neither of those reasons are an excuse for not fitting an accurate instrument in my opinion, and now the widespread use of GPS is finally calling them out on this deception.
Neither of those reasons are an excuse for not fitting an accurate instrument in my opinion, and now the widespread use of GPS is finally calling them out on this deception.
1954
New Member
Maybe this topic has already been beat to death but I just installed a new Garmin Nuvi on my 2016 and I was stunned that at 100 kph my bike speedometer was reading 108 kph.In an earlier post someone said that the 2016 was much improved over early bikes. With the quality of the electronics on the S10 this is inexcusable. As far as keeping me safe by making me think I am going faster than I actually am, this is wrong on many counts. Your warranty is disappearing 8% faster than it should. Come resale time the bike shows more miles than actual, reducing its value. And we should be able to believe the speed shown on the display. Last October a friend and I got lost coming back from Port Dover and it would have kept me out of some cold and wet weather once we figured out where we were if I could have traveled that 8 kph faster.
As far as a speedo reading faster to avoid lawsuits the opposite is true. Class action suits against Honda have been won because of speedos reading fast and Honda had to add mileage to the warranties to compansate owners. Yamaha should recall our bikes and fix this. I have an HP Tuners setup for my engine swapped Fiero and it took me 10 minutes to get my speed bang on. We own many different cars and trucks that from the factory are all less than 1 kph off compared to GPS readings.
As far as a speedo reading faster to avoid lawsuits the opposite is true. Class action suits against Honda have been won because of speedos reading fast and Honda had to add mileage to the warranties to compansate owners. Yamaha should recall our bikes and fix this. I have an HP Tuners setup for my engine swapped Fiero and it took me 10 minutes to get my speed bang on. We own many different cars and trucks that from the factory are all less than 1 kph off compared to GPS readings.
WJBertrand
Ventura Highway
If you peruse the various posts about speedo accuracy, it seems on the US MPH, are more accurate. Seems the KPH error is still there.
In my experience the odometer error is not the same as the speedometer error. My old ST1300’s speedo was 7% too fast whilst the odometer was only +2% off.
Sent from my iPhone using Tapatalk Pro
In my experience the odometer error is not the same as the speedometer error. My old ST1300’s speedo was 7% too fast whilst the odometer was only +2% off.
Sent from my iPhone using Tapatalk Pro