19
M3 WR
1x
You can set the roll circumference of your wheel in
millimetres on the VDO M3 or select the applicable
tyres from a tyre table.
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 tyres in the
tyre size table and set these in the device.
ATTENTION:
the values in the table are approximations only.
The actual values can deviate from the values in the table
depending on the manufacturer and the tyre tread.
If your tyre 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 wheel to which you
want to attach the sensor 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 size
Wheel circumference in mm/inches
Tyre size
ETRTO
kMH Wheel
circum-
ference
in mm
MPH Wheel
circum-
ference
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
83.7
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
90.4
29 x 2.25
57-622
2,288
90.1
29 x 2.40
62-622
2,300
90.6
650 B
2,100
82.7
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
