Pad wear sensor side

[david7m]

Hi
I might have imagined this, but thought only one side had the sensor. Which side is it ?
Peeping through the wheel spokes, the pads look low at about 6mm.
Dave

 

[<tuffty/>]

Nearside

<tuffty/>

 

[david7m]

At 6mm on the outside, do you think they close to being replaced ?
Cheers.
Dave