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[F1ANNEX I U.K. ADMINISTRATIVE PROVISIONS FOR THE EC TYPE-APPROVAL OF TYRES

5. MODIFICATION OF A TYRE TYPE U.K.

5.1. If a tyre type-approved pursuant to Annex II or pursuant to Annex V has been modified, the provisions of Article 5 of Directive 70/156/EEC shall apply. U.K.

5.2. If the tread pattern of a tyre has been modified in the case of type-approvals pursuant to Annex II, no repetition of the tests prescribed in Annex II is considered necessary. U.K.

5.3. In the case where tyre-size designations or trade marks are added to a range of tyres type-approved pursuant to Annex V, any requirement for retesting shall be determined by the type approval authority. U.K.

5.4. In the case of modification of the tyre tread pattern of a range of tyres approved pursuant to Annex V, a representative set of samples shall be retested unless the type approval authority is satisfied that the modification does not affect the tyre/road noise emissions.] U.K.