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As a professional, I totally agree with the philosophy of turning your side mirrors out to where the side of the car is not visible. I, professionally speaking, do not endorse the use of convex mirrors glued to the surface of the planar (flat) mirrors due to numerous safety concerns addressed by the National Highway Transportation Safety Administration. The bottom line, regardless of how you use your mirrors, is to, without fail, do your
headcheck. Never trust the mirrors 100%.
The mirrors are safety equipment and should be adjusted properly to be used properly.