Obvious question is obvious, but I assume you are rigorous with your install/calibration procedure?
I sometimes get stupid numbers too, but more often than not it's after a recent bike change, and the risk is increased if I'm rushing. Also my screwy numbers are often associated with very lopsided l/r balance which I usually interpret as a sign of incorrect installation.
L/r balance is within normal tolerance (52/48 on that ride) recalibration is as per garmin reccomendations but I have read that sometimes they get stuck between versions on updates so need to connect with garmin express to check and see if that might be the problem..
Obvious question is obvious, but I assume you are rigorous with your install/calibration procedure?
I sometimes get stupid numbers too, but more often than not it's after a recent bike change, and the risk is increased if I'm rushing. Also my screwy numbers are often associated with very lopsided l/r balance which I usually interpret as a sign of incorrect installation.