# 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 7.1.1.1: The section width shall be calculated by the following formula:


S = S 1 + K (A — A 1 )
where:
S: is the actual section width in millimetres as measured on the test rim;
S 1 : is the value of the ‘Design Section Width’, referred to the measuring rim, as quoted in the International Tyre Standard specified by the retreader for the tyre size in question;
A: is the width of the test rim in millimetres;
A 1 : is the width in millimetres of the measuring rim as quoted in the International Tyre Standard specified by the retreader for the tyre size in question.
K: is a factor and shall be taken to equal 0,4.

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Source: https://www.legislation.gov.uk/eudn/2001/509/attachment/1/division/7./division/7.1.1.1. (the official version)
Page: https://openlegislation.uk/eu-decision-2001-509/attachment-1/division-7./division-7.1.1.1.
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.