# Commission Regulation (EU) No 458/2011 of 12 May 2011 concerning type-approval requirements for motor vehicles and their trailers with regard to the installation of their tyres and implementing Regulation (EC) No 661/2009 of the European Parliament and of the Council concerning type-approval requirements for the general safety of motor vehicles, their trailers and systems, components and separate technical units intended therefor (Text with EEA relevance), Division 6.1: In cases where a vehicle is provided with a spare unit, it shall be one of the following:

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

6.1.1. A standard spare unit in the same size as the tyres actually fitted to the vehicle.
6.1.2. A temporary-use spare unit of a type suitable for use on the vehicle, however, vehicles of categories other than M1 or N1 shall not be equipped or fitted with a temporary-use spare unit.
6.1.2.1. If specific precautions have to be taken in order to fit a temporary-use spare unit to the vehicle (e.g. temporary-use spare unit is only to be fitted on the front axle and therefore a front standard unit must first be fitted on the rear axle in order to address a malfunction of a rear standard unit) this shall be stated clearly in the vehicle owner’s handbook and compliance with the appropriate aspects of paragraph 2.3 of this Annex shall be verified.

---
Source: https://www.legislation.gov.uk/eur/2011/458/annex/II/division/6/division/6.1 (the official version)
Page: https://openlegislation.uk/eu-regulation-2011-458/annex-II/division-6/division-6.1
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.