Bell Bike Products F12 Speedometer tire codes.?

P

Pete V

New member
I inadvertently threw out the instruction manual for my new Bell F12 model speedometer. There are no instruction manuals online. Does anyone have this model and willing to share the 4-digit tire codes for both street and mountain bike tires?
 
Most of the time the code is actually the circumference of the tire in mm. My 700 x 25c road tire is 2134 and my mountain bike measures 2069.

Sheldon Brown's site will have a chart of tire sizes.

http://sheldonbrown.com/cyclecomputer-calibration.html
 
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