# Council Decision of 26 June 2001 on the accession of the European Community to Regulation 108 of the United Nations Economic Commission for Europe concerning the approval for the production of retreaded pneumatic tyres for motor vehicles and their trailers (2001/509/EC), Division 2.15


‘ Principal grooves ’ means the wide grooves situated in the central zone of the tread, which cover approximately three-quarters of the breadth of the tread.

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Source: https://www.legislation.gov.uk/eudn/2001/509/attachment/1/division/2./division/2.15. (the official version)
Page: https://openlegislation.uk/eu-decision-2001-509/attachment-1/division-2./division-2.15.
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.