My prior GPS had one of those sticky PSA disks. It worked well until summer time when the heat released it. I tried a number of things to get it to stick before I found a high temp (400F+) adhesive from Loctite. No problem since.
So, if you are concerned with getting it off, first heat with a hair drier. If that does not work, Goo-Gone and 30 minutes dwell time.