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Periodic surveillance and/or monitoring of the manufacture of a product constitutes the basic premise for certification that includes the award of a certification mark. Certification always requires product testing and regular factory inspections.
As a third-party expert organisation, TÜV SÜD Product Service verifies that the manufacturer is able to maintain consistent quality in line with the requirements throughout high-volume production and has established the necessary quality system, including incoming goods inspections, lists of materials and final product testing.
In addition, calibration of the necessary measuring and monitoring equipment must be ensured. Surveillance and/or monitoring covers the testing of safety-critical components and other materials used. If unauthorised changes are made to the product, the certificate will become invalid and the TÜV SÜD certification mark may no longer be used.
The tests are based on high speed tests named in ECE-R30 (passenger car), ECE-R54 (commercial vehicles) and ECE-R75 (motorcycles) for tires. Test criteria are basing on evaluated test tires as utility to ensure durability at higher temperature caused by speed.
Tires with repair material are rolled on a drum test rig to evaluate the mechanical durability.
Tires with repair material are stored with mounted wheel in a climate chamber at minus 25°C for a given timeframe. Directly after conditioning the tires are rolled on a drum test rig up to max. speed of the tire to evaluate durability at quick changing temperatures.
The user manual is checked basing on TÜV SÜD criteria to check minimum requirements.
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