Join Date: Mar 2011
Location: Pickerington, OH, United States
Re: Garmin 660 or BMW Nav V.
The "glare" we complain about is generally a bright reflection of something which is brighter than the display. It is that reflection that needs to be eliminated or subdued. My GPS is RAM mounted by the handlebar mounts. With the GPS tipped upward, or straight at my head, the reflection is of the sky, and no shield can block that. Since my line of sight is downward, I adjust the GPS angle so the reflected angle is downward also, and the reflection is of the front of my jacket. My light gray jacket causes more glare than my black one. What works best is a black shield under the screen, angled upward parallel to my line of sight. I can see the entire screen but the reflection of my jacket is blocked. The shield is made from a microwavable tray from my wife's frozen souffles - thin, stiff, black plastic with a matte surface, easily cut with scissors.
All the commercial glare shields block reflections from above, which are of little help when the GPS screen is mounted below eye level, as most are.