[Edd1970]

The speedometer is reading about where 160mph would be located (look at reflection to see speedometer). GPS only has it at 144mph, Is anyone else’s speedometer off this bad? This is my 2021 M109R BOSS

 

[Zoom]

That's pretty common. Most are off by 3-4 mph at 60 mph, and it gets off more the faster you go. You must have had yours flashed as normally they are limited to about 128 mph. Welcome to the forum too.

 

[Joe RC51]

View attachment 421555
The speedometer is reading about where 160mph would be located (look at reflection to see speedometer). GPS only has it at 144mph, Is anyone else’s speedometer off this bad? This is my 2021 M109R BOSS

That's 10 % , that's normal.

 

[Edd1970]

That's pretty common. Most are off by 3-4 mph at 60 mph, and it gets off more the faster you go. You must have had yours flashed as normally they are limited to about 128 mph. Welcome to the forum too.

Yes, I did a few modifications, including a Dyno tune that turned the limiter off. Thank you for the welcome and the answer to my question.

 

[Metalman]

I have a device on one of my bikes called a "Speed-o-Healer". It is adjustable and can be set so the speedometer is correct. On my M109R, I have a separate GPS speedometer mounted on one riser.

 

[ThiagoSilva287]

View attachment 421555
The speedometer is reading about where 160mph would be located (look at reflection to see speedometer). GPS only has it at 144mph, Is anyone else’s speedometer off this bad? This is my 2021 M109R BOSS

That's not the concerned matter as its quite common thing

 

[RFM1009]

View attachment 421555
The speedometer is reading about where 160mph would be located (look at reflection to see speedometer). GPS only has it at 144mph, Is anyone else’s speedometer off this bad? This is my 2021 M109R BOSS

i installed a SpeedoHealer in my 9. according to a $20 GPS app mine was off by just over 9%. think I have mine set to -9.2%. speedo and the GPS read the same at 90mph.