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Measure Wheel Size
Wheel size settings are a prerequisite for accurate
cycling information.
To set the wheel size, go to Settings > Bike SET.
Select Bike 1/ 2 / 3 > Wheel SET.
There are two ways to determine the wheel size of
your bike:
Method 1
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 the 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 when the valve is at the starting
point to mark a full rotation. Measure the distance
between the two lines.
Subtract 4 mm from the distance to account for
your weight on the bike to get your wheel
circumference. Enter this value in the cycling
computer.
Method 2
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. Due to the variation
of the measurements, Polar cannot be held
responsible for their validity.
You can also check the wheel size from the
manufacturer.
ENGLISH
10 Set Up Your Cycling Computer