G3 external tire pressure sensors must clear the brake caliper and nearby parts throughout wheel rotation. On some motorcycles, the sensor on the valve can strike the caliper.
Motorcycles with known restrictions
The following motorcycles are not compatible with G3 external tire pressure sensors because of brake-caliper clearance:
BMW R1250RS
BMW R1200RT, 2018
Harley 975
Jiuhe E300p/E100
Guangyang S250
For BMW C400GT and C400X, the G3 compatibility notice excludes both internal and external sensor installations.
Check the actual mounting space
Check the valve position and available space around the brake caliper before installing the G3 external sensor.
Check clearance throughout a full wheel rotation using a safe workshop method. Ask a qualified installer if you cannot safely inspect it.
If the sensor could contact the caliper or another component, do not ride with it installed. Do not bend the valve to create clearance.
The reference images below illustrate the fitment check. Your motorcycle must have sufficient clearance with the sensor fitted.
Get help choosing a suitable setup
contact us with your motorcycle model and year, sensor type, and photos showing the valve and caliper clearance. Do not assume that a valve adapter or internal sensor will fit without checking the specific wheel and sensor combination.