Originally Posted by Albie
It corrects the ODO as well. You can even tweek your wheel size if you change tire brands or even to account for wear. I'm not that anal. I just change it when I switch the wheel sets.
That's what I was afraid of. My ODO is not inaccurate (when compared to the GPS). Having an accurate ODO is more useful than speedo when it comes to estimating how many miles you can go.