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Division 7.1.2.1 The theoretical outer diameter of a retreaded tyre shall be calculated by the following formula:F1

Original text. Later amendments are not shown.

D = d + 2H

where:

D: is the theoretical outer diameter in millimetres;

d: is the conventional number defined in paragraph 2.21.3, in millimetres;

H: is nominal section height in millimetres and is equal to S n multiplied by 0,01 Ra where:

where:

S n : is the nominal section width in millimetres;

Ra: is the nominal aspect ratio.

All of the above symbols are as quoted in the tyre size designation as shown on the sidewall of the tyre in conformity with the requirements of paragraph 3.2.2 and as defined in paragraph 2.21.

Annotations

Textual amendments

F1

Substituted by Council Decision of 13 March 2006 amending Decisions 2001/507/EC and 2001/509/EC with a view to making United Nations Economic Commission for Europe (UN/ECE) Regulation Nos 109 and 108 on retreaded tyres compulsory (2006/443/EC).