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