Editing Odometer (section)

== Accuracy ==
Most odometers work by counting wheel rotations and assume that the distance traveled is the number of wheel rotations times the tire circumference, which is a standard tire diameter times [[pi]] (3.141592). If nonstandard or severely worn or underinflated tires are used then this will cause some error in the odometer. The formula is <math>(actual\ distance\ traveled) = \tfrac{((final\ odometer\ reading) - (initial\ odometer\ reading)) \cdot (actual\ tire\ diameter)}{(standard\ tire\ diameter)}</math>. It is common for odometers to be off by several percent.<ref>{{cite web | access-date=2019-01-22 | url=https://www.cbsnews.com/news/is-your-odometer-cheating-you/ | title=Is Your Odometer Cheating You? | language=en-US | website=www.cbsnews.com | date=13 March 2007 | archive-date=2019-01-23 | archive-url=https://web.archive.org/web/20190123010427/https://www.cbsnews.com/news/is-your-odometer-cheating-you/ | url-status=live }}</ref> Odometer errors are typically proportional to [[Speedometer#Error|speedometer errors]].