On Friday, April 12, 2019 at 10:31:37 AM UTC+1, T i m wrote:

Again, maybe Garmin sucker mounts are better than others but I can't
remember it ever falling off on a journey, other than when I've put it
on one handed when leaving a car park or campsite against the clock
etc.

The only time my Garmin Nuvicam has fallen off was when it has been left in the Sun, the rubber sucker dries out and it falls down. I can tell when it does this as the car alarm goes off!