If this is your first visit, be sure to check out the FAQ by clicking the link above. You may have to register before you can post: click the register link above to proceed.
Post a reply to the thread: Don't know how to find bicycle wheel value for a speedometer?
Click here to log in
In what corner do we have Search box?
You may choose an icon for your message from this list
Will turn www.example.com into [URL]http://www.example.com[/URL].
You may rate this thread from 1-star (Terrible) to 5-stars (Excellent) if you wish to do so.
The numbers in the chart are in millimeters (almost all cycling computers use mm). 7 feet is equal to 2133.6 mm. So use 2133 or 2134 in your computer. It will be very accurate!
The circumference is in mm, 7 ft = 2134 mm which is the exact reading I use on my road bike. My tire is 700 X 25 mm but the side wall flex makes the tire smaller then what it measures. I have a mile marker in my front yard and 2134 gets me with in 20 feet of the next marker. http://www.sheldonbrown.com/cyclecomputer-calibration.html
Typically if it says "700 x ...." it is a 700 CC wheel and you should enter the last option of your list there. A 700 cc wheel is pretty standard these days for road bikes and most newer commuter/hybrid bikes.
Forum Rules
