VDO M1WR - Manual (Page 9)

9
M1 WR
1x
You can set the roll circumference of your wheel on the VDO
M1 WR.
The more accurate this setting, the more accurate your speed
indicator and the measurement of the distance you have
travelled.
You can find the values for your wheels in the wheel size table
and set these in the device.
If your wheel size is not listed in the table, you can accurately
measure the roll circumference.
How to measure the roll circumference:
STEP 1
Stand your bike up and position the front wheel so that the
valve is directly on the ground. Ensure that the tyres are fully
pumped up in accordance with the usage instructions. Mark
the position of the valve on the ground with a line or adhesive
strip.
STEP 2
Now push your bike forwards in a straight line until the valve
is back on the ground after one rotation.
Again mark the position of the valve on the ground with a line
or adhesive strip.
STEP 3
The distance between the two marks corresponds to your
wheel circumference or wheel size in millimetres.
Settings – wheel circumference
Wheel circumference in mm/inches
Tyre size ETRTO
kMH
Wheel
circumference
in mm MPH
Wheel
circumference
in inches
16 x 1.75 47-305 1,272 50.1
20 x 1.75 47-406 1,590 62.6
24 x 1.75 47-507 1,907 75.1
26 x 1.5 40-559 2,026 79.8
26 x 1.75 47-559 2,070 81.5
26 x 1.9 2,089 82.2
26 x 2.00 50-559 2,114 83.2
26 x 2.10 54-559 2,125 83.6
26 x 2.25 57-559 2,145 84.4
26 x 2.35 60-559 2,160 85.0
26 x 2.40 62-559 2,170 85.4
28 x 1.5 40-622 2,224 87.6
28 x 1.6 42-622 2,235 88.0
28 x 1.75 47-622 2,268 89.3
29 x 2.10 54-622 2,295 90.3
29 x 2.25 57-622 2,288 90.1
29 x 2.40 62-622 2,300 90.5
650 B 2,100 82.6
700 x 18C 18-622 2,102 82.8
700 x 20C 20-622 2,114 83.2
700 x 23C 23-622 2,095 82.5
700 x 25C 25-622 2,146 84.5
700 x 30C 30-622 2,149 84.6
700 x 32C 32-622 2,174 85.6
700 x 38C 38-622 2,224 87.6