GB/T 19388-2003Test methods of measuring rolling circumference for passenger car tyres (English PDF)

Foreword

This Standard modified and adopted ISO 17269.2000 Passenger Car Tyres – Methods for

Measuring Rolling Circumference – Loaded New Tyres (English Version).

This Standard was redrafted according to ISO 17269.2000.Appendix A lists the comparison

list of clause numbers between this standard and those of ISO 17269.2000.

When adopting international standards, this Standard has made some modifications based on

China's actual situation and operational needs. Compared with ISO 17269.2000, this Standard

adds Clause 6 "Test Report". The relevant technical differences are marked with a vertical single

line in the margin of the clauses they involve. A list of these technical differences is given in

Appendix B for reference.

For ease of use, this Standard has also made the following editorial changes.

a) Change 'this international standard' into 'this Standard';

b) Use the decimal point '.' to replace ',' as a decimal point;

c) Delete the foreword of the international standard;

d) State directly the content of ISO 4000-1.2000, the reference document of ISO 17269.2000,

in the text of the standard (see 4.6.1, 4.7, 5.6.2, 5.6.3 of this Edition).

Appendixes A and B of this Standard are informative; while Appendix C is a normative.

This Standard was proposed by the China Petroleum and Chemical Industry Association.

This Standard shall be under the jurisdiction of the National Technical Committee on Tires and

Rim of Standardization Administration of China.

This Standard is entrusted to the National Technical Committee on Tires and Rim of

Standardization Administration of China for interpretation.

Drafting organization of this Standard. Beijing Research & Design Institute of Rubber Industry.

Chief drafting staffs of this Standard. Chen Minling, Wang Kexian, Wu Jiangtao, and Xu

Lihong.

Test Methods of Measuring Rolling Circumference for

Passenger Car Tyres

1 Scope

This Standard specifies two test methods for measuring the rolling circumference and the

number of revolutions per unit distance (kilometers) of passenger car tires under load

conditions. The first method is the drum method and the second method is the vehicle road

method.

This Standard applies to all new passenger car tires.

2 Normative Reference

The provisions in following documents become the provisions of this Standard through

reference in this Standard. For dated references, the subsequent amendments (excluding

corrigendum) or revisions do not apply to this Standard, however, parties who reach an

agreement based on this Standard are encouraged to study if the latest versions of these

documents are applicable. For undated references, the latest edition of the referenced document

applies.

GB/T 6326 Tyre terms (GB/T 6326-1994, neq ISO 3877-1.1978, ISO 4223.1989)

3 Terms and Definitions

For the purposes of this Document, the terms and definitions given in GB/T 6326 and the

following apply.

4 Drum Method