Which tyre pressure monitor to trust......

[Zorroe]

So I have set my tyre pressures both with a garage airline and at home using a reputable tyre pressure guage. In both instances the bike displays wildly differing readings to what the other devices show. (All 3 read different)

Which one should I believe the most?

 

[3bikesnospace]

Set the tyres COLD with an accurate gauge ,bike TPs is cali rated to read correctly at 20c,pressures will show higher after riding, it's fine.

 

[DJ123]

Think of the Bike sensors as being a rough guide. They'll vary the reading as the air/tyres change temperature. If your reputable tyre gauge is one you trust and know to be accurate, run with that as your base line.