Operation Manual

EN 25
WHEEL CIRCUMFERENCE MEASUREMENT POPULAR TIRES CIRCUMFERENCE REFERENCE TABLE
Tire Size Circumference Number Tire Size Circumference Number
18 Inch 1436 mm
700C
Tubular
2117 mm
20 Inch 1596 700x20C 2092
22 Inch 1759 700x23C 2112
24x1.75 1888 700x25C 2124
24 Inch 1916 700x28C 2136
24x 1 3/8 1942 700x32C 2155
26x1.40 1995 700x35C 2164
26x1.50 2030 700x38C 2174
26x1.75 2045 27.5 Inch 2193
26x1.95
2099
28 Inch
(700B)
2234
26x2.1 2133 28.6 Inch 2281
Quick Table : Get a suitable circumference value from the table.
Precise Measurement
Roll the wheel until the valve stem is at lowest point to the
ground. Then mark this first point on the ground. Get on
the bicycle and have a helper push you until the valve stem
returns to lowest point. Mark the second point on the
ground. Measure the distance between the marks. Enter
this value to set the wheel circumference.
SPECIFICATIONS