Measuring Wheel Size - Pro SCIO 3.3 Manual

MEASURING WHEEL SIZE

MEASURING WHEEL SIZE USING ROLLOUT METHOD
The roll-out method is the most accurate method for determining the circumference of your
wheel/tire combination.
On a flat open surface make a mark on your tire and the floor exactly where they
1.
meet.
Roll your bike forward one full revolution of the front wheel and mark the point on the
2.
floor where the revolution is complete. For maximum accuracy be sitting on the bike
while someone rolls you and the bike forward.
Measure the distance from the first mark to the second in millimeters and enter the
3.
resulting number into your computer.
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11/21/07 12:26:04 P