Start with the valve at the bottom.
Roll the wheel along the ground and
measure the distance when the valve
returns to the bottom again.
CIRCUMFERENCE VALUE (in inches or cm)
Measuring the Circumference
If you have a non-standard tyre fitment you can determine the value
to use by measuring the circumference as follows:-
Circumference Settings for BATRIBIKE Models
with Standard Tyres fitted
TYRE SIZE (Inches)
STANDARD TYRE DESCRIPTION
28 x 1.60
Schwalbe 42-622 Spicer
28 x 1.60
Schwalbe 42-622 Silentio
27.5 x 2.25 Tough Tom/
Schwalbe 57-584 Rapid Rob