Reflector Tests on Bicycle Tires

DEKRA Expert Tip

An important aspect for the passive safety of two-wheelers in road traffic is good recognizability at dawn or at night.

In addition to the regular lighting systems, reflective strips on the tires also play an important role. These must fulfill the ECE standard no. 88 in order to be approved for use on public roads.

reflector tests bicycle

DEKRA offers the corresponding tests at its accredited laboratory in Arnhem (Netherlands). These cover various areas, from the labeling of the tire to the general specifications to the resistance of the reflective strip against external influences and, above all, its reflective capacity.

In general, the tests take place as follows: Once the labeling according to the regulations has been established – including manufacturer name, recommended filling pressure and space for the test mark – the engineers check the general specifications, such as heat resistance or the maintenance options. The reflective material must be permanently attached to the tire as an uninterrupted circular ring. Resistance tests against external influences follow, such as impact resistance and resistance to oils, fuels, and water.

The tires are conditioned in climatic chambers, where they are exposed to temperatures of up to 65° C and -20° C. Impact tests with standardized test bodies and defined forces are also part of the test programs. In order to determine reliably the crucially important function, reflective capacity under a wide variety of conditions, the test engineers use instruments including a goniometer, with which the pivoted wheel can be tested under various angles from both sides. In the process, the relationship between the lowest and highest values is also determined, likewise the location of the reflective strip on the tire wall. If the strip is too close to the rim edge, i.e. too far away from the horizontal axis, in a sloping position it no longer produces the prescribed reflection image.

Contact

Marcel Klein Gebbink

Marcel Klein Gebbink

Engineer Photometry

separator

DEKRA Certification BV

Meander 1051

6825 MJ Arnhem

Share page