Tyre grading classes and snow grip qualification are determined by the tyre manufacturer using the methods of R117, or ISO 19447 for ice grip qualification. At the moment of attributing the grading class, the applicable versions of the R117 or ISO test procedure and test report are used and documented.
As with VECTO Regulation (EU) 2017/2400, conformity is assessed using the testing methods in force at the moment of the measurement and of the registration in EPREL.
The precise version of the testing method and the date of testing have to be indicated in the technical documentation to be uploaded in EPREL as part of the section «Reference to harmonised standards».
Disclaimer: Please note that the European Commission cannot provide a legally binding interpretation of the EU legislation, as this is the sole competence of the European Court of Justice. Any remarks from the European Commission services are without prejudice to the position the Commission might take should related cases arise in a procedure before the Court of Justice.