WABCO OptiTire System Description page 23

Components
Function
The external sensor, which is fastened to the existing wheel bolts, enables a wheel change without the
need to reconfigure the system. The external sensor is also predestined for retrofitting due to the way
it is installed. Please note that special external sensor and PA tube variants must be used for different
rims and installation locations.
With twin wheels and Super Single rims, problems may occur with the radio transmission due
to the immersion depth. To ensure a good quality of reception, T-shaped external sensors
should be used (WABCO part numbers: 960 731 031 0 or 960 731 041 0).
"External sensors WM2" variants
The various types of external sensors are illustrated in the table:
APPLICATION
Trailer: Independent wheel
(no Super-Single)
Trailer: Independent wheel
(no Super-Single), 20°
for special purposes (e.g.
Iveco)
Trailer: Independent wheel
(no Super-Single), 23 mm
pitch circle diameter
Trailer: Independent wheel
(no Super-Single)
Twin tires, Super-Single
HOLE,
WABCO PART WHEEL
NUMBER BOLT
960 731 011 0 26 mm
960 731 013 0 23 mm
960 731 017 0 23 mm
960 731 021 0 32 mm
960 731 031 0 26 mm
BOLT HOLE Ø ANGLE
335 mm 0°
335 mm 0°
335 mm 0°
335 mm 0°
335 mm 70°
FIGURE
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