Specialized Speedzone Comp Owner's Manual page 22

Calculating wheel circumference
• Mark your tire and the ground where
they meet. Roll bike forward full revolu-
tion and mark the point on the floor.
• Measure the distance in millimeters
and enter digits.
stem
22
Roll forward
one revolution
Wheel circumference
size in MM
TIRE SIZE SIZE/MM
26X1.0 1943
26X1.25 1949
26X1.95 2055
26X2.0 2060
26X2.1 2068
26X2.2 2075
29X2.0 2300
650X20C 1945
700X21C 2092
700X23C 2102
700X25C 2113
700X28C 2138
700X32C 2161
700X35C 2175
700X38C 2187
Circumference 0000-2999