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Mount vibrates - need to rest GPS against the dash or A-pillar
on November 7, 2010
The TomTom 540 is a great GPS and comes with an adequate window mount. It does not have a lot of flexibilty, but once you figure out how to mount the suction cup on angles (not just up and down) and rotate the GPS, it fits in any car.
I bought this mount so that I could leave it in my car and take the TomTom mount with me when I travel. This mount has a tremendous amount of adjustabilty, and there are no concerns about it coming off the glass.
The cruxt of the issue is the extent of the arm. Maybe the TomTom 540 is just too heavy for it, but it tends to vibrate while drivingbecause it is cantelevered out there so far. It doesn't drop or slowly lower down; in that regard the mount is strong enough. It's just a vibration issue. It's enough to make you car sick if you are trying to read data (street names, time to arrival, etc.)
If you rest the GPS against the dash, or against the A-pillar (side of the windshield), it takes out the vibration. Since it blocks your view to mount any GPS in the middle of the windshield hanging in free space, perhaps this is a non-issue. For me it is an annoyance, but there is a work around.