Cannondale IQ108, User Manual

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PROGRAMMING THE CYCLOCOMPUTER

MANUALLY SETTING WHEEL SIZE  

If your wheel/tire size is not one of the sizes listed in the chart on the previous page, or if you desire absolute accuracy, 
you may enter an exact wheel circumference into the system.

1. 

  On a flat open surface make a mark on your tire and the floor exactly where they meet. 

2. 

  Roll your bike forward one full revolution of the wheel and mark the point on the floor where the revolution is 

complete. 

3. 

  Measure the distance from the first mark to the second in millimeters and enter the resulting number into your 

computer using the following steps:

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PROGRAMMING THE CYCLOCOMPUTER

POPULAR WHEEL SIZES 

The charts at left show the 
measurement conversion for 
many popular wheel sizes.

wheel size

circumference

26 X 1.0

1973

26 X 1.5

2026

26 X 1.6

2051

26 X 2

2114

700 X 20C

2114

700 X 23C

2133

ADJUST

:  

PRESS

FUNCTION

Continue through 

all fields

SET

 & 

ADVANCE

:  

PRESS

SET

ADJUST

:  

PRESS

FUNCTION

Set Wheel Size & 

advance to Set 

Odometer:

PRESS SET

wheel size

circumference

700 X 25C

2146

700 X 28C

2149

700 X 32C

2174

700 X 35C

2205

700 X 40C

2224

PROGRAMMING WHEEL SIZE (CONTINUED)