UN R30 change reports — Tyres for passenger cars and their trailers

02 series

• 02 series — Supplement 27

  On run flat or self-supporting tyres suitable for speeds above 240 km/h but not above 300 km/h, “ZRF” may replace “RF”. Above 300 km/h, “ZRF” must replace “RF”.

• 02 series — Supplement 26

  The scope (paragraph 1.) has a new footnote. It says that the Regulation defines requirements for tyres as a component and does not limit their installation on any categories of vehicles.

• 02 series — Supplement 25

  New paragraph 3.1.17. adds “ERS” to the required markings, for radial tyres whose ply cords are not substantially at 90° across the complete cross section.

• 02 series — Supplement 24

  In the “flat tyre running mode” procedures of Annex 7, paragraphs 3.2. and 4.2. now set an inflation pressure of 2.5 bar for conditioning.

• 02 series — Supplement 23

  Paragraph 3.4. no longer requires the markings and the approval mark to be moulded on to or into the tyres. They must be clearly legible, indelible and raised above or sunk below the tyre surface.

• 02 series — Supplement 22

  Paragraph 6.2.3. now starts with “Except for tyres with radial structure or run flat tyres”. The ±3.5 per cent limit for the outer diameter, measured six hours after the load/speed performance test, does not apply to these tyres.

• 02 series — Supplement 21

  New paragraph 2.11. defines an “Extended Mobility Tyre (EMT)”, and new paragraph 3.1.15. adds a symbol for a tyre that is an EMT.