12
M2.1 WL
1x
You can set the roll circumference of your wheel on the
VDO M2.1 WL.
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.
This is done as follows:
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
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 / 27,5
2180
85,8
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
Wheel circumference in mm/inches
