European Tyre and Rim Technical Organisation
17 Sep 2021 UN R108/109: Comments on proposal for amendments (ETRTO) GRBP-74-29/Rev 1 2021-09-17 Comments on the proposals prepared by BIPAVER, France and Netherland to align the test procedures for retreaded tyres with the latest amendments to R30, R54 and R117. ETRTO
16 Jun 2021 UN R108: Proposal for amendments (ETRTO) GRBP-74-35/Rev.1 2021-06-16 Corrections and alignment to document ECE/TRANS/WP.29/GRBP/2021/15 ETRTO
31 Jan 2024 UN R108: Proposal for 01 Series of amendments (ETRTO) GRBP-79-24 2024-01-31 Proposal to replace document ECE/TRANS/WP.29/GRBP/2024/13 ETRTO
31 Jan 2024 UN R108: Consolidation of 01 series of amendments (ETRTO) GRBP-79-25 2024-01-31 Consolidated version including the amendments proposed with document ECE/TRANS/WP.29/GRBP/2024/13 amended by GRBP-79-24. ETRTO
31 Jan 2024 Retreaded tyres snow performance/traction: Proposal for a new UN Regulation (ETRTO) GRBP-79-28/Rev.1 2024-01-31 This consolidated document amends and supersedes GRBP/2024/11. ETRTO
6 Feb 2024 Retreaded tyres snow/traction: Proposal for a new UN Regulation (ETRTO) GRBP-79-29/Rev.1 2024-02-06 Consolidated version including the amendments proposed with document ECE/TRANS/WP.29/GRBP/2024/11 amended by GRBP-79-28-Rev.1. ETRTO
18 Feb 2025 UN R108: Proposal to supersede document GRBP/2025/15 (ETRTO) GRBP-81-11/Rev.1 2025-02-18 ETRTO
6 Feb 2025 Supporting material for ETRTO working documents (ETRTO) GRBP-81-13/Rev.1 2025-02-06 ETRTO
11 Feb UN R108: Proposal to amend document GRBP/2026/9 (ETRTO) GRBP-83-13/Rev.1 2026-02-11 ETRTO
11 Feb UN R108: Proposal to amend document GRBP/2026/9 (extended version) (ETRTO) GRBP-83-14/Rev.1 2026-02-11 ETRTO
6 Feb Documents submitted to GRBP on tyre regulations (ETRTO) GRBP-83-33/Rev.1 2026-02-06 ETRTO
2 Jul 2024 UN R108: Proposal for a Supplement to the 01 series of amendments (ETRTO) GRBP/2024/24 2024-07-02 Proposal to correct an omission and clarify the text of Annex 3: The positioning and order of <b>the markings shall be as follows:</b>.... ETRTO
5 Dec 2024 UN R108: Proposal for a Supplement to the 01 series of amendments (ETRTO) GRBP/2025/15 2024-12-05 Proposal to:<ol><li>Correct the description of a tyre to exclude aspects outside the scope of UN R108</li><li>Align the snow tyre definition to UN R109 and 172</li><li>Clarify the definition of nominal rim diameter</li><li>Clarify the definition of principal grooves by eliminating the circular reference between this definition and the position of tread wear indicators</li><li>Introduce a definition for tread depth (used in the requirements for special use and professional off-road tyres)</li><li>Amend para. 4.1.5.3.2. to remove the retreaded reference to traction tyre classification because it is not applicable to tyre of class C1</li><li>Clarify the calculation of the tyre section width</li><li>Replace "XXX" with the UN Regulation No. 172 in the references to the approval of retreaded tyres with regard to their snow performance and/or classification as traction tyre.</li></ol> ETRTO
28 Nov 2025 UN R108: Proposal for a Supplement 2 to the 01 series of amendments (ETRTO) GRBP/2026/9 2025-11-28 Proposal to<ol class="alpha"><li>delete para. 2.48. concerning material supplier,</li><li>amend para. 2.51. by referring to the material supplier only and cancel the reference to the material manufacturer,</li><li>simplify the list of tyres classified as tyre for use in severe snow conditions to be submitted at the application for approval, and</li><li>clarity and correct certain paragraphs</li></ol> ETRTO
21 Sep 2016 Definitions in regulations dealing with tyres (ETRTO) GRRF-82-21 2016-09-21 ETRTO