Odometer correction factor

[alvaro84]

Originally Posted by theholycow

To check your odometer's accuracy, on the longest stretch of highway you normally drive compare mile markers, GPS distance, and your car's odometer.

I do it time to time to check the validity my correction, which is +2% in my bike Teresa's case. Last time I checked she was 2.5% too modest, so I'm pretty much on the safe side.

We have 2 bikes and there was always some difference between them. And one day I got Teresa's tires replaced and the difference grew too big to ignore when comparing the two bike's fuel economy, I've been using correction in my logs since then.

I used correction for my car too for a while. When I bought the YARDIS, I found the tripmeter 3-4% enthusiastic - this is how I found that the tires' size was off. After I replaced them to factory size, I stopped using correction as this enthusiasm fell under 1%.

However, if you're trying to compare your fuel economy to anyone else's, keep in mind that most people are just putting in the number straight from their odometer.

Thankfully that 2% difference is mostly not even visible in the averages (1 digit fraction, l/100km) - I just like to be accurate

On a side note, I'm kind of developing a logging system that has this correction built-in for guys like me, and its visibility can be turned off for the ones who aren't ("kind of" = I'm learning via doing so and I'm slow)

I like to see what the odometer would show (it's already in my spreadsheet logs) if it was accurate (plus I didn't lose those kms when the decompressor didn't kick in when restarting after FAS, stole the juice from the dashboard making it revert to the last "saved game" - the last key on...)