Getting Started; Measuring Wheel Size - Polar Electro CS600X Getting Started Manual

2. GETTING STARTED

Measuring Wheel Size

Before activating your cycling computer, measure
the wheel size of your bicycle.
Wheel size settings are a prerequisite for correct
cycling information. There are two ways of
determining the wheel size of your bike:
Method 1
Look for the diameter in inches or in ETRTO
printed on the wheel. Match it to the wheel size in
millimeters in the right column of the ETRTO
chart on the following page.
Wheel sizes on the chart are advisory as wheel
size depends on the wheel type and air pressure.
Method 2
Measure the wheel manually for the most accurate
result.
Use the valve to mark the point where the wheel
touches the ground. Draw a line on the ground to
mark that point. Move your bike forward on a flat
surface for one complete rotation. The tire should
be perpendicular to the ground. Draw another line
on the ground at the valve to mark a full rotation.
Measure the distance between the two lines.
Subtract 4 mm to account for your weight on the
bike to get your wheel circumference. Enter this
value in the cycling computer.
ENGLISH
Getting Started 7