Motorcycle mirrors - size and regulations

Mirrors on a motorcycle are a must - and not just because they are required by law. They ensure that you can keep a safe eye on the traffic behind you at all times without having to contort yourself dangerously. Even if the legislator sets strict specifications for the reflective add-on parts, there is still some leeway in terms of their size and installation and therefore a few things to bear in mind.

These legal regulations apply to motorcycle mirrors

In accordance with the provisions of Section 56 of the German Road Traffic Licensing Regulations ( StVZO ), all motor vehicles are required to have "mirrors or other devices for indirect vision". The number of mirrors required depends on the date of first registration of the motorcycle:
First registration before 1990: at least one mirror is required for these motorcycles.
Motorcycles built after 1990 must be fitted with two rear-view mirrors.
In addition, the law stipulates that the rear-view mirrors must be installed in a position that allows the rider to clearly observe the traffic behind their own vehicle. It is not permitted to use these attachments in a way that does not fulfill a functional purpose.

What size must motorcycle mirrors be?

The StVZO and the European Union also provide detailed technical specifications. For example

1. The size of the reflective surface of round mirrors must have a minimum diameter of 94 mm and the surface must not be smaller than 69 square centimeters. For non-circular mirrors, it must be possible to draw a circle with a diameter of 78 mm on the reflecting surface.

2. The size of the maximum dimensions is also defined. The diameter of a round mirror must not exceed 150 mm. The reflective surface of a non-circular mirror must fit into a 120 x 200 mm rectangle.

3. Installation: When installing rear-view mirrors for motorcycles, care must be taken to ensure that they do not become loose or misaligned due to vibrations and shocks while riding.

4. The motorcycle mirrors must be individually adjustable to the rider and the maximum angle between the rider's eye and the rear-view mirror must not exceed 55°.

5. E-approved or DOT-certified: Rear-view mirrors, as well as other relevant add-on parts, must be E-approved or DOT-certified. Only then is it permitted to use them on public roads. In the event of an inspection, a fine may be imposed in accordance with the current table of fines under Section 56 of the German Road Traffic Licensing Regulations (StVZO) if no inspection number is present.

Practical tips for optimum visibility

• Check the condition and correct adjustment of the mirrors before every ride.
• When replacing or converting mirrors, only use attachments that are E-approved.
• When fitting new motorcycle mirrors, make sure they are in the correct position. This is the only way to ensure optimum rear visibility.