# Council Directive of 18 July 1989 on the approximation of the laws of the Member States relating to the tread depth of tyres of certain categories of motor vehicles and their trailers (89/459/EEC), Article 1

Extent: E+W+S+N.I.

Member States shall take all necessary steps to ensure that, throughout their service life on the road, tyres for category Ml, N1, 01 and 02 vehicles as defined in Annex I to Council Directive 70/156/EEC of 6 February 1970 on the approximation of the laws of the Member States relating to the type-approval of motor vehicles and their trailers, as last amended by Directive 87/403/EEC, have a tread depth in the main grooves of the tread surface of at least 1,6 mm.
‘Main grooves’ means the broad grooves in the central part of the tread surface, which covers about three-quarters of the width of the tread surface.

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Source: https://www.legislation.gov.uk/eudr/1989/459/article/1 (the official version)
Page: https://openlegislation.uk/eu-directive-1989-459/article-1
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.