Originally Posted by
Jim from Boston
I think the main controversy on mirror threads such as this one is that many subscribers post that shoulder checks eliminate mirrors, not the mirrors eliminate shoulder checks. Because mirrors can be periodically viewed, one often knows what’s b for quite a distance. Of course if uncertain about what’s immediately behind, a shoulder check is useful. But I think a shoulder check can be limited by how far you can twist, and how long you want to linger scanning the rearward view.
One of the disadvantages (maybe the only disadvantage) of the SafeZone helmet mirror, is that it is so damn big that when you do an actual over the shoulder look back, you see only mirror! Rarely, however, is a full 180* turn necessary. Anything, even the slightest tilt of your head to allow more of your peripheral vision, or your peripheral hearing to sample the road environment immediately behind you is far more beneficial than total reliance on the mirror.