Proposal to correct the omission of the rim-diameter code 25 for the calculation of metric-designated tyres (this rim code appears in Annex 5, Table 7 for code designated tyres).

The proposal would delete redundant words to improve brevity and clarity.

Text prepared by the European Tyre and Rim Technical Organisation (ETRTO) to remove All Terrain Vehicles (ATV) tires from UN Regulation 106 on agricultural tires.

Text prepared the European Tyre and Rim Technical Organisation (ETRTO) to introduce new tire sizes.

Editorial improvements to the wording of marking requirements, superseding document GRRF-74-03.

Proposal by the European Tyre and Rim Technical Organisation (ETRTO) to insert a new marking provision and, under “categories of use”, a definition for construction application (Industrial tractor) tyres into UN R106.

Editorial improvements to the wording of marking requirements, superseding document GRRF/2013/24.

Editorial corrections by the ETRTO to its proposal to insert a new marking provision and under “categories of use”, a definition for construction application (industrial tractor) tyres into UN R106.

Pursuant to the addition of a new speed symbol for forestry tyres, this proposal would add a bonus loads column for A6-rated tyres to Annex 7-Part D.

Corrections to the tables concerning “Agricultural implement tyres – Normal section sizes”.

Deletion of a paragraph (concerning UN R90) inadvertently inserted into the justification for the this proposal.

This proposal aims to align the UN Regulation 106 with international standards (ETRTO, T&RA and ISO 4351-2 table 2). This proposal will also avoid any possible misunderstanding for the application of the EC Regulation 167/2013 that refers to UN R106.

Proposal to align UN R106 with international standards (ETRTO, T&RA and ISO 4351-2 table 2) with regard to Improved Flexion (IF) tyres and Very high Flexion (VF) tyres. This proposal also clarifies the application of EC Regulation 167/2013 which refers to UN R106.

Proposal to add load indexes to the table in the Annex 4 to keep up with the technical evolution of tyres.

Revised proposal, based on document GRRF/2016/38 and revising GRRF-82-24, to:
a) Align definitions and contents of paragraphs with the other tyre regulations (UN R30, R54, R117, etc.);
b) Include a definition of “Manufacturer” extracted from the resolution “R.E.3”;
c) Adopt a common definition and use of the terms “Manufacturer’s name”," Brand name", “Trademark”, “Trade description” and “Commercial name” and their links;
d) Clarify which markings shall be moulded on both sidewalls of the tyre; and those which shall be moulded on one sidewall only;
e) Add information in the certificate to clarify the relationship with the certified products;
f) Align definitions with Regulation EU 167/2013 which defines vehicles in category S as “interchangeable towed equipment” and includes tread patterns for ‘implement traction tyres’ that consist of blocks rather than lugs or cleats;
g) Eliminate redundant marking requirements;
h) Clarify the inflation pressure to be used for measurements and tests and related tyre markings;
i) Align the current rules for calculating the dimensional limits in accordance with ISO, all major tyre standards, and as proposed for UN R30, R54, and R75.

Proposal to:
a) Align definitions and contents of paragraphs with the other tyre regulations (UN R30, R54, R117, etc.);
b) Include a definition of “Manufacturer” extracted from the resolution “R.E.3”;
c) Adopt a common definition and use of the terms “Manufacturer’s name”," Brand name", “Trademark”, “Trade description” and “Commercial name” and their links;
d) Clarify which markings shall be moulded on both sidewalls of the tyre; and those which shall be moulded on one sidewall only;
e) Add information in the certificate to clarify the relationship with the certified products;
f) Align definitions with Regulation EU 167/2013 which defines vehicles in category S as “interchangeable towed equipment” and includes tread patterns for ‘implement traction tyres’ that consist of blocks rather than lugs or cleats;
g) Eliminate redundant marking requirements;
h) Clarify the inflation pressure to be used for measurements and tests and related tyre markings;
i) Align the current rules for calculating the dimensional limits in accordance with ISO, all major tyre standards, and as proposed for UN R30, R54, and R75.

Proposal to amend Annex 5 with regard to Improved Flexion (IF) tyres and Very high Flexion (VF) tyres.

Regulation No. 106 contains standardized tyre sizes which often need to be updated in line with technical progress. In order to accelerate the update process of the Regulation and limit the number of amendments, it is proposed to establish a new Resolution on standardized sizes and to refer to this Resolution in Annex 5.

Proposal to remove the technical content in Annex 5. This content would be incorporated into a new Resolution on Tyre Sizes as proposed in document GRRF/2016/46.

Revised proposal, based on document GRRF/2016/38, to:
a) Align definitions and contents of paragraphs with the other tyre regulations (UN R30, R54, R117, etc.);
b) Include a definition of “Manufacturer” extracted from the resolution “R.E.3”;
c) Adopt a common definition and use of the terms “Manufacturer’s name”," Brand name", “Trademark”, “Trade description” and “Commercial name” and their links;
d) Clarify which markings shall be moulded on both sidewalls of the tyre; and those which shall be moulded on one sidewall only;
e) Add information in the certificate to clarify the relationship with the certified products;
f) Align definitions with Regulation EU 167/2013 which defines vehicles in category S as “interchangeable towed equipment” and includes tread patterns for ‘implement traction tyres’ that consist of blocks rather than lugs or cleats;
g) Eliminate redundant marking requirements;
h) Clarify the inflation pressure to be used for measurements and tests and related tyre markings;
i) Align the current rules for calculating the dimensional limits in accordance with ISO, all major tyre standards, and as proposed for UN R30, R54, and R75.

Regulation No. 106 contains standardized tyre sizes which often need to be updated in line with technological progress. In order to accelerate the update process of the Regulation and limit the number of amendments, it is proposed to insert in a new Resolution the newly standardized sizes and to refer to this Resolution in Annex 5. As a temporary solution to assess the effectiveness of such proposal, the Annex 5 of Regulation No. 106 will be kept as it is with no further updates. After a trial period of approximately two years and upon confirmation of effectiveness, the complete Annex 5 of Regulation No. 106 would be transferred to this Resolution on Tyre Sizes.

Proposal to:

1. Align definitions and contents of paragraphs with the other tyre regulations (UN R30, R54, R117, etc.);
2. Include a definition of “Manufacturer” extracted from the resolution “R.E.3”;
3. Adopt a common definition and use of the terms “Manufacturer’s name”," Brand name", “Trademark”, “Trade description” and “Commercial name” and their links;
4. Clarify which markings shall be moulded on both sidewalls of the tyre; and those which shall be moulded on one sidewall only;
5. Add information in the certificate to clarify the relationship with the certified products;
6. Align definitions with Regulation EU 167/2013 which defines vehicles in category S as “interchangeable towed equipment” and includes tread patterns for ‘implement traction tyres’ that consist of blocks rather than lugs or cleats;
7. Eliminate redundant marking requirements with the requirement for “@kPa” markings effective from 1 September 2017;
8. Clarify the inflation pressure to be used for measurements and tests and related tyre markings;
9. Align the current rules for calculating the dimensional limits in accordance with ISO, all major tyre standards, and as proposed for UN R30, R54, and R75;

Regulation No. 106 contains standardized tyre sizes, which often need to be updated, following the technical progress. In order to accelerate the update process of the Regulation and limit the number of amendments, it is proposed to insert in a new Resolution the standardized sizes and to refer to this Resolution in Annex 5. As a temporary solution to assess the effectiveness of such proposal, the Annex 5 of Regulation No. 106 will be kept as it is with no further updates. After a trial period of approximately two years and upon confirmation of effectiveness, the complete Annex 5 of Regulation No. 106 would be transferred to this Resolution on Tyre Sizes.

Proposal to add tyre and rim dimensions and to add a diameter code ‘d’ of 28.5 (Please note that the “28.5.5” shown in the table is a typo and should be “28.5”).

Revised proposal for a “Mutual Resolution on dimensions of tyres of certain size designations”.

Revised version of the proposal to include UN R106 tyre dimensions in a Mutual Resolution on tyre sizes. The amendment to the table listing the allowed nominal rim diameters (d) is needed to allow the approval of standardized sizes which exist and are already on the waiting list for type approval.

Amendment, per GRRF discussions, to remove the proposal to require the use of kPa markings and the related transitional provisions from the broader set of amendments to UN R106 proposed in document GRRF/2017/9.

Proposal to

1. amend para 6.1.2. to align the wording to the headers in Annex 5 and to correct the reference to the footnote
2. amend para 6.2.1. to restore corrent references after renumbering made during recent Supplements
3. amend Annex 5, Table 5 to add the value for the Overall diameter (D) in column (*) that applies to tyres marked with classification code “I-3”.
4. amend Annex 5, Table 6, Note 1 to clarify use of the ‘IMP’ and ‘IND’ suffixes for agricultural implements and construction vehicles, respectively.
5. add a footnote to Annex 5, Table 7 is the to introduce the appropriate formulae in the Regulation (instead of via Annex 5)
6. correct cross-references in Annex 7 following the introduction of three new paragraphs in Supplement 15
7. amend Annex 7, Part A to conform with Tire and Rim Association (TRA) specifications for code designated diagonal tyres with speed symbol A8.

Proposal for new tables covering shallow-tread drive wheel tyres for agricultural tractors – normal section sizes and for additional specifications for high flotation tyre dimensions.

This document consolidates previous documents GRRF/2017/19 and informal document GRRF-84-17 taking into account the request for addition of tyre sizes and tyre classification codes common in the United States and standardised by the Tire and Rim Association, but needed to be added to UN Regulation No. 106 in order to permit their type approval in order to conform to Regulation EU 167/2013 for tyres to be exported to Europe. It includes addition/modifications of some paragraphs to the main text of the Regulation as well as the addition of some tyre size designations to Annex 5 and Annex 7:

1. ISO 4251-4 replaced by ISO 18805
2. Paragraph 2.33.2 deleted since new tables for IF and VF were added to Annex 7
3. Paras 3.2., 3.2.2. and 5.4. modified because “tyres submitted for approval” cannot bear an approval mark until approved and the “only” as it is written can be misunderstood. Para. 3.2.2. was aligned to the wording in other UN Regulations. Reference to para. 3.3 in paragraph 5.4. is deleted because paragraph 3.3 does not refer to specific markings
4. Para 6.1.2. amended to align the wording to the headers in Annex 5 and to correct the reference to the footnote
5. Para 6.2.1. amended to restore the proper references after renumbering resulting from the latest Supplements
6. The amendment of Annex 5, Table 5 adds the value for the overall diameter (D) in column (*) that applies to tyres marked with classification code “I-3”
7. Annex 5, Table 6, Note 1 amended because most of the tyre sizes listed in the table, especially those identified by the “classification code I‐3” (i.e. Traction tread), are currently available in both versions: ‘implement’ to be used on agricultural machinery and ‘IND’ to be used on construction vehicles. The two types of tyres have the same type of size designation and the same dimensions. Therefore some manufacturers identify those tyres with the suffix ‘IND’ rather than with the suffix ‘IMP’ thus applying the variation of load capacity with speed as published in Annex 7 Part E. The reason for this proposal is to avoid a duplication of tables with a new table only replacing the suffix IMP with the suffix IND.
8. The addition of the footnote to Annex 5, Table 7 answers the request by GRRF to introduce appropriate formulae in the Regulation instead of continuously updating Annex 5.
9. References in Annex 7 corrected pursuant to the renumbering following the introduction of three new paragraphs in Supplement 15 approved during the 172nd session of WP.29.
10. Annex 7, Part A amended to conform with Tire and Rim Association specifications for code designated diagonal tyres with speed symbol A8.

Proposal to add markings for the inflation pressure to be used for measurements and tests.

Consolidated version of UN R106 including ETRTO proposed amendments (see documents GRRF/2018/6 and GRRF/2018/7).

Proposal to add a paragraph to define the purpose of the “SS” marking introduce by the amendments to UN R106 on agricultural and related off-road tyres.

Proposal to

1. modify the scope with regard to Category S and R agricultural vehicles,
2. modify the paragraph numbering (and related footnotes) to improve text clarity,
3. to correct an error in Annex 5 Table 7 where “35×16” should read “36×16”,
4. amend Annex 7 Part E to address variations of load-carrying capacity for tyres for construction applications (industrial tractors or skid-steers / mini-loaders) with speed category symbol “D”.

Proposal to:

1. include the load variation with speed for IF and VF tyres in Table A of Annex 7
introduce a new paragraph (2.18.13) and amend paragraph 3.1.9.and Annex 3,part D to reconcile contradictions
2. clarify Annex 6 “Test method for measuring tyre dimensions” via references to other provisions
3. Correct example in Annex 3, part C by introducing the dimension “b” for the tyre size designation, and
4. Modify inflation pressure markings.

Proposal for alternative language regarding markings to avoid use of the term “moulded” which could be interpreted as a technical design restriction.

Proposal to align the definitions of “diagonal” or “bias-ply” and “bias belted” tyre structures to the definitions given in UNvR30 and R75, to improve the text with regard to description of the composition of the size designation for metric tyres, and to resolve an apparent contradiction regarding the prefixes IF and VF.

Proposal to extend the scope of the speed category E to align with the technical evolution of agricultural and forestry vehicles.

Information concerning discussions on the proposals to extend the scope to ‘E’ speed symbol.

Proposal to clarify how to mark the tyre in the case of implement tyres of speed category symbol D and E for mixed applications where the load index shall be the same for free rolling and drive wheel application.

Proposal to supersede the text for a Supplement 22 presented in document GRBP/2026/8.