Rear view extension mirrors are essential for a car when you are towing a caravan. They are required by law to be fitted to cars whilst towing.
The rear view mirror extensions significantly improve rear and peripheral vision and reduce the risk of accidents.
In 2010 the laws around extension mirror changed. For the vast majority of people who tow caravans need two additional towing mirrors in orders to tow on the roads legally.
Standard wing mirrors do not provide the view needed to tow a caravan safely unless they are as wide as the towing load or wider. For example, if a large towing vehicle, like a4x4 was towing a relatively small and narrow caravan, they might have sufficient view from their standard mirrors. Even in this case, fitting additional mirrors will only improve vision even more.
Additional mirrors will normally be required to be fitted on the nearside and offside when towing. These also need to be removed when you are driving without a towing load.
As a general rule for a typical car-caravan combination, you need to be able to see a zone at least 4-5m wider than the caravan at a distance of about 10-20m behind the caravan.
Types Of Rear View Mirrors
There are mirrors that clip onto the existing car mirror, these tend to be very quick and easy to apply. They can be used on both the nearside and offside. You often find that the mirror faces are adjustable. These are usually fitted by one or more straps looping around the back of the existing mirror and tightened to secure it in place.
These mirrors are usually fitted by gripping on the door underside and slotting into the space between the side window and the window rubber. These are also adjustable from the driving position. You will also find that these types of mirrors usually vibrate less than the wing mounted types.