I am a driver and cover about 100,000 miles a year. I have had a Garmin 52LM for four years which I have run on Openstreet map data updating each month. She has not let me down except with new build locations which is understandable. This is the older 52LM that has the distance to destination, arrival time, speed and speed limit, clock all on the right hand side of the screen.
I am a linux user so unable to use Garmin Express and also found the OSM on the SDcard a method to my liking.
I got a 65LM recently to find that OSM maps work but one loses functionality. Gone is; the speed limit, icon for distances to junction/roundabouts, up-a-head info or lane assist, and strangely enough only works on the power socket supplied not a micro USB with mini USB adapter ( I found the USB chargers don't last that long and yet the charger with attached cable seems to go on-and-on).
The large 65LM screen is great for my uses but the loss in functionality... alas.
Apparently the 65LM uses NT maps. I spoke to garmin UK and asked why they provide updates through Windows and Mac but not Linux when that is in fact what Mac is. Well he wasn't very helpful other than suggesting I bought another Garmin.
I would be very grateful if someone could advise on alternative maps that would work or other possibilities. It seems the phone apps are the only alternative - I have found them good but the screen is small and a tablet is too large. I am thinking of selling the 65Lm and just hoping the 52LM lasts a while longer.
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