If you notice that CHIGEE TPMS consistently shows slightly higher pressure readings than BMW's factory system. This discrepancy is normal.
System Comparison
BMW Factory TPMS: Static Measurement
BMW's factory TPMS uses an internal sensor system that:
- Is mounted inside the tire
- Measures pressure through tire deformation against the road
- Uses processed data that filters out pressure changes from temperature fluctuations
- Shows relatively stable readings across different riding conditions
CHIGEE TPMS: Dynamic Measurement
CHIGEE's TPMS provides real-time, dynamic measurements that:
- Is mounted outside the tire
- Reflects higher pressure readings at the valve stem location compared to internal measurements
- Shows natural pressure fluctuations as temperatures change during riding
- During rides, as tires warm up, pressure increases
- When stopped and cooling, pressure decreases
Why Readings Differ
Sensor Location
External valve stem sensors naturally show higher pressures than internal tire sensors.
Measurement Philosophy
- CHIGEE: Displays real-time, unfiltered data, capturing natural pressure changes as the tires heat up during riding.
- BMW: Displays processed, stabilized readings that filter out temperature-related variations.