Pctts 266 : 20xx general statement



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powerpluswatermarkobject3PCTTS 266 : 20XX

GENERAL STATEMENT

The Trinidad and Tobago Bureau of Standards (the Bureau) is a body corporate established under the authority of the Standards Act No. 18 of 1997 (herein after referred to as the Standards Act).

In accordance with the Standards Act, the Bureau shall promote and encourage the development and maintenance of standards and further shall establish standards for the following: to improve goods produced or used in Trinidad and Tobago; to ensure industrial efficiency and development; to promote public and industrial welfare, health and safety; and to protect the environment.

The Bureau develops standards through consultation with relevant interest groups, and public comment is invited on all draft standards before they are declared as Trinidad and Tobago Standards in accordance with the provisions of the Standards Act.

The Bureau is the legal custodian of the Trinidad and Tobago Standard Mark, which is issued in accordance with the Standards Act. When a Trinidad and Tobago Standard Mark appears on any product, or in connection with any service, process or practice, it provides assurance that such a product, service, process or practice conforms to a Trinidad and Tobago Standard.

The Bureau’s Standards Information Centre maintains a reference library of standards, including local, regional and international standards and is the national node of the International Organization for Standardization Information Network (ISONET). The Centre also acts as the sales agent for the publications of foreign and international standards organizations.

NOTE In order to keep abreast of progress in the industries concerned, Trinidad and Tobago Standards are subject to periodic review. Suggestions for improvements are welcome.

AMENDMENTS ISSUED SINCE PUBLICATION

AMENDMENT NO.

DATE OF ISSUE

TEXT AFFECTED





































ATTACHMENT PAGE FOR TTBS AMENDMENT SHEETS

TRINIDAD AND TOBAGO BUREAU OF STANDARDS

PNEUMATIC PASSENGER CAR TYRES  SPECIFICATION

(3rd Revision)

__________________________________________________________________________

The Specifications Committee responsible for the formulation of this Trinidad and Tobago Standard is as follows:



SPECIFICATIONS COMMITTEE FOR PNEUMATIC

PASSENGER CAR TYRES

Members Representing

Mr. Robert Cudjoe (Chairman) Ministry of Works and Transport - Mechanical Services Division

Mr. Ravi Jaimungalsingh Advanced Tyre Systems Limited

Mr. Randolph De Peza Intercity Taxi Drivers Association

Mr. Aloysius Bereaux Automotive Components Limited

Mr. Ian Arrindell Automotive Dealers Association of Trinidad & Tobago

Mr. Malcolm Bater Automotive Dealers Association of Trinidad & Tobago

Mr. Donald Mackenzie Mileage Mack Limited

Mr. Patrick Romano Ministry of Trade and Industry and Consumer Affairs

Mr. Indar Singh Trinidad and Tobago Used Tyres Importers Association

Mr. Cecil Sequea Ministry of Works and Transport - Licensing Office

Mr. Steve Williams Trinidad & Tobago Bureau of Standards

Mr. Ian Eccles (Technical Trinidad & Tobago Bureau of Secretary) Standards

Contents

Foreword 1

Introduction 2


1 Scope 3

2 Normative references 3

3 Terms and definitions 3

4 Tyre designation 3

4.1 Dimensional and constructional characteristics 3

4.2 Nominal section width 3

4.3 Nominal aspect ratio 3

4.4 Tyre construction code 4

B for bias-belted construction; 4

D for diagonal construction; and 4

R for radial ply construction. 4

4.5 Nominal rim diameter code 4

4.6 Service conditions characteristics 4

load index; 4

speed symbol; and 4

maximum permissible inflation pressure. 4

4.7 Other service characteristics 4



5 Requirements for new tyres 5

5.1 General 5

5.2 Physical dimensions 5

5.3 Tubeless tyre resistance to bead unseating 5

5.4 Tyre strength 5

5.5 Tyre endurance 6

5.6 High speed performance 6

6 Sampling and testing to determine compliance 6

6.1 General 6

6.2 Sampling and testing 6

6.3 Compliance 6



7 Presentation, inspection and selection of used tyres 6

7.1 Presentation of used tyres for inspection 6

7.2 Inspection of used tyres 7

7.3 Selection criteria for used tyres 7



8 Non-conforming tyres 8

New or used pneumatic tyres primarily intended for use on passenger cars, but which do not conform to the requirements of this standard, shall not be sold, offered for sale, imported or released for normal use into Trinidad and Tobago. 8



9 Storage 8

10 Labelling requirements 9

Annex C


(normative) 100

Test method for determining the average tread depth of used passenger car tyres 16

Annex D
(normative)200

Tables and figures 18





Annex C
(normative) 100

Test method for determining the average tread depth of used passenger car tyres 16



Annex D
(normative)200

Tables and figures 18



E.1 Recommended information to be suplied by the purchaser 27

E.2 Recommended information to be supplied by the manufacturer or supplier 27



Figures

Annex C
(normative) 100

Test method for determining the average tread depth of used passenger car tyres 16



Annex D
(normative)200

Tables and figures 18



Annex C
(normative) 100

Test method for determining the average tread depth of used passenger car tyres 16



Annex D
(normative)200

Tables and figures 18



Annex C
(normative) 100

Test method for determining the average tread depth of used passenger car tyres 16



Annex D
(normative)200

Tables and figures 18



Annex C
(normative) 100

Test method for determining the average tread depth of used passenger car tyres 16



Annex D
(normative)200

Tables and figures 18



Annex C
(normative) 100

Test method for determining the average tread depth of used passenger car tyres 16



Annex D
(normative)200

Tables and figures 18



Tables

Annex C
(normative) 100

Test method for determining the average tread depth of used passenger car tyres 16



Annex D
(normative)200

Tables and figures 18



Annex C
(normative) 100

Test method for determining the average tread depth of used passenger car tyres 16



Annex D
(normative)200

Tables and figures 18



Annex C
(normative) 100

Test method for determining the average tread depth of used passenger car tyres 16



Annex D
(normative)200

Tables and figures 18



Annex C
(normative) 100

Test method for determining the average tread depth of used passenger car tyres 16



Annex D
(normative)200

Tables and figures 18



Annex C
(normative) 100

Test method for determining the average tread depth of used passenger car tyres 16



Annex D
(normative)200

Tables and figures 18



Annex C
(normative) 100

Test method for determining the average tread depth of used passenger car tyres 16



Annex D
(normative)200

Tables and figures 18



Annex C
(normative) 100

Test method for determining the average tread depth of used passenger car tyres 16



Annex D
(normative)200

Tables and figures 18



Annex C
(normative) 100

Test method for determining the average tread depth of used passenger car tyres 16



Annex D
(normative)200

Tables and figures 18



Foreword

These requirements were declared a Trinidad and Tobago Standard with effect from ……………., after the draft finalised by the Specifications Committee on Pneumatic passenger car tyres was approved by the Bureau.

The Committee has recommended that this standard be declared a compulsory standard to protect the consumer or user against danger to safety.

This standard will become effective as a compulsory standard on a date to be notified by the Minister responsible for trade and industry in a Notice to be published in the Trinidad and Tobago Gazette, as required by the Standards Act No. 18 of 1997.

This third revision cancels and replaces the second revision (TTS 266: 2002) which has been technically revised.

In formulating this standard considerable assistance was derived from the following:



    International Organization for Standardization Standard,

    ISO 4000-1:1989 Passenger car tyres and rims - Tyres;

    Federal Motor Vehicle Safety Standard,

    FMVSS 109 New Pneumatic Tires;

    49 CFR Part 571- Final Rule

    Canadian Standards Association Standard,

    CSA D238.3 - M1979 Tire retreading;

    Irish Standard,

    I.S. 412:1988 Retreaded passenger car and commercial vehicle tyres; and

    American Society for Testing and Materials Standard,

    ASTM F421 - 95b Standard method for measuring groove and void depth in passenger car tires.


Annexes A, B, C and D form an integral part of this Trinidad and Tobago Standard. Annex E is included for information purposes only.

Introduction

This standard is the third revision of the pneumatic tyres standard TTS 266: 2002 Specification for Pneumatic Tyres for Passenger Cars.

The first revision was as a result of a need to keep apace with new technology and the unfair trade practices brought about by trade liberalisation in Trinidad and Tobago.

Trade liberalisation had brought an influx of used tyres into the country, which competed unfairly with the other established tyre products, namely new, retreaded and regrooved tyres. There were no trade restrictions with regard to the quality of the used tyres and therefore consumers were under the perception that they were purchasing a quality product. The risk involved was that the used tyre might have contained defects that may not be detected by untrained consumers thereby making them a safety hazard to road users.

The first revision of this Trinidad and Tobago standard therefore addressed the concerns with used tyres by incorporating a section with detailed inspection and selection criteria. It also harmonised the standard with the industry accepted standard on tyres, the Federal Motor Vehicle Safety Standards standard, FMVSS 109, established in the United States, in order to facilitate international interchangeability and avoid costly and unnecessary duplication of tyre requirements.

This second revision incorporates technical revisions to the presentation, inspection and selection of used tyres. Annex C has also been added to provide a scientific and practical method for determining the average tread depth on used passenger car tyres in cases of dispute.

In formulating this standard cognisance was taken of the practices that are peculiar to the tyre industry and also of the need to follow international standards. Thus the use of the imperial (inch) system of units in some areas has been accommodated.

Tyres of apparently similar construction have different requirements as indicated by the units used in the marking of the tyres. This is the result of a parallel system that exists between users of the metric system of units and those of the imperial (inch system of units).

The third revision to this standard seek to address concerns raised by the Japanese Automobile Manufacturers Association (JAMA), and reduce the potential of any inherent technical barriers to trade being formulated between the major automobile supplier and Trinidad and Tobago. Section 10 of this revised standard addresses these concerns.



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