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Old 12-03-2015, 12:05 PM   #13
BrucePerens
TrailManor Master
 
Join Date: Jan 2014
Posts: 893
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Besides being able to see behind the trailer, towing mirrors give the driver a visual cue about the side clearance necessary to accommodate the width of the trailer. My 3023 is 7 inches wider than my Grand Cherokee on each side. The mirrors help me to maintain the side clearance. Without them, it might be too easy to shear off the side of the trailer.
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