My trusty 10-year old digital tire pressure gauge reads way higher (4PSI) than the Navigator 5 TPM display on my 2014 R1200GS. I've used it on Goldwing tires, my other vehicle tires, and received normal wear pattern from the tires as a result. Anyone else experience this difference?
Yes on the pressure delta. The BMW algorithm assumes 68 F for the calculation, as I understand it. Your pressure/temperature may differ. Best use of TPM is to monitor relative pressure, on the fly. Checking actual with a known good gauge is best practice.