DJS 269: 201X

ICS 83.160.10

Jamaican Standard

Specification

for

Pneumatic tyres for vehicles other than passenger cars

BUREAU OF STANDARDS JAMAICA

COMMENT DEADLINE: 30 APRIL 2017- 28 June 2017

IMPORTANT NOTICE

Jamaican standards are subjected to periodic review. The next amendment will be sent without charge if you cut along

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kept up-to-date. Our address:

Bureau of Standards Jamaica

6 Winchester Road

P.O. Box 113

Kingston 10

Jamaica, W.I.

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JS 269: 201X

NAME OR DESIGNATION…………………………………….………………………………

ADDRESS……………………………………………………….………….……………………

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JBS CERTIFICATION MARK PROGRAMME

The general policies of the JBS Certification Mark Programme are as follows:

- The JBS provides certification services for manufacturers participating in the programme and

licensed to use the gazetted JBS Certification Marks to indicate conformity with Jamaican

Standards.

- Where feasible, programmes will be developed to meet special requirements of the submitter.

Where applicable, certification may form the basis for acceptance by inspection authorities

responsible for enforcement of regulations.

- In performing its functions in accordance with its policies, JBS will not assume or undertake any

responsibility of the manufacturer or any other party.

Participants in the programme should note that in the event of failure to resolve an issue arising from

interpretation of requirements, there is a formal appeal procedure.

Further information concerning the details of the JBS Certification Mark Programme may be obtained

from the Bureau of Standards Jamaica, 6 Winchester Road, Kingston 10, Jamaica, W. I.

CERTIFICATION MARKS

Product Certification Marks Plant Certification Mark

Certification of Agricultural Produce Jamaica-Made Mark

(CAP) Mark

DJS 269: 201X

ICS 83.160.10

Jamaican Standard

Specification

for

Pneumatic tyres for vehicles other than passenger cars

Bureau of Standards Jamaica

6 Winchester Road

P.O. Box 113

Kingston 10

Jamaica, W. I.

Tel: (876) 926 -3140-5, (876) 632-4275 or (876) 632-4275

Fax: (876) 929 -4736

E-mail: info@bsj.org.jm

Website: www.bsj.org.jm

Month 201X

DJS 269: 2017

© 201X Bureau of Standards Jamaica

All rights reserved. Unless otherwise specified, no part of a Bureau of Standards Jamaica publication may be

reproduced or utilized in any form or by any means, electronic or mechanical, including, photocopying microfilm or

scanning, without permission in writing.

ISBN xxxxxxxxxx

Declared by the Bureau of Standards Jamaica to be a standard method of test pursuant to Section 7 of the Standards Act

1969.

First published November 1995

Second edition August 2006

This standard was circulated in draft form for comments under the reference DJS 269: 201X

Jamaican Standards establish requirements in relation to commodities, processes and practices, but do not purport to include

all the necessary provisions of a contract.

The attention of those using this specification is called to the necessity of complying with any relevant legislation.

Amendments

No.

Date of Issue

Remarks

Entered by and

date

Contents

Page

Foreword iv

Committee Representation iv

Acknowledgment iv

Related documents iv

Specification

1 Scope 1

2 Purpose 1

3 Application 1

4 Definitions 1

5 Tyre and rim matching information 3

6 Requirements 4

7 Test procedures 6

8 Non-conforming tyres 7

9 Disposal 7

10 Reporting 7

Tables

1Strength test plunger diameter 8

2 Minimum static breaking energy Jou1es (J) and inch-pounds (inch-lbs.) 8

3 Endurance test schedu1e 8

Foreword

This standard is a revision of JS 269: 2006 and has been updated to ensure that it is in line with current technical requirements

within the industry.

The standard applies to all pneumatic tyres to be used in the local market including those arriving with imported new and used

vehicles.

This standard is intended to be mandatory.

Committee representation

The revision of this standard for the Standards Council, established under the Standards Act, 1969, was carried out under the

supervision of the Bureau's Motor Vehicle Standards Technical Committee, which at the time comprised the following members:

Acknowledgement

Acknowledgement is made to the United States Government Department of Transport for permission to reproduce material from

49 CFR571.119 Section 571.119 Standard No. 119.

Related documents

This standard makes reference to the following:

49CFR571.119 Section 571.119 Standard No.119. New pneumatic tires for vehicles other than passenger cars

ISO 4209-l Truck and bus tyres and rims (metric sizes)

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1 Scope

This standard establishes performance and marking requirements for tyres for use on multipurpose passenger vehicles, trucks, buses, trailers, and motorcycles.

2 Purpose

The purpose of this standard is to provide safe operational performance levels for tyres used on motor vehicles other than passenger cars, and to place sufficient information on the tyres to permit their proper selection and use.

3 Application

This standard applies to pneumatic tyres designed for road use on multipurpose passenger vehicles, trucks, buses, trailers, and motorcycles manufactured after 1948.

4 Terms and definitions

For the purposes of this document, the following terms and definitions apply.

4.1 bead That part of the tyre made of steel wires, wrapped or reinforced by ply cords that is shaped to fit the rim. 4.2 bead separation

A breakdown of bond between components in the bead area.

4.3 bias ply tyre A pneumatic tyre in which the ply cords that extend to the beads are laid at alternate angles substantially less than 90° to the centreline of the tread.

4.4 carcass The tyre structure, except tread and sidewall rubber.

4.5 chunking The breaking away of pieces of the tread or sidewall.

4.6 cord The strands forming the plies in the tyre.

4.7 cord separation The cords parting away from adjacent rubber compounds.

4.8 cracking Any parting within the tread, sidewall, or inner-liner of the tyre extending to cord material.

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4.9 groove The space between two adjacent tread ribs.

4.10 inner-liner The layer(s) forming the inside surface of a tubeless tyre that contains the inflating medium within the tyre.

4.11 inner-liner separation The parting of the inner-liner from cord material in the carcass.

4.12 light truck tyre A tyre designated by its manufacturer as primarily intended for use on lightweight trucks or multipurpose passenger vehicles.

4.13 load rating The maximum load a tyre is rated to carry for a given inflation pressure.

4.14 maximum permissible inflation pressure The maximum cold inflation pressure to which a tyre may be inflated.

4.15 maximum load rating The load rating at the maximum permissible inflation pressure for that tyre.

4.16 model rim assembly A test device that:

(a) includes a rim which conforms to the published dimensions of a commercially available rim,

(b) includes an air valve assembly when used for testing tubeless tyres or an inner tube and flap (as required) when used for testing tube type tyres, and

(c) undergoes no permanent rim deformation and allows no loss of air through the portion that it comprises of the tyre-rim pressure chamber when a tyre is properly mounted on the assembly and subjected to the requirements of this standard.

4.17 open splice Any parting at any junction of tread, sidewall, or inner liner that extends to cord material.

4.18 overall width The linear distance between the exteriors of the sidewalls of an inflated tyre, including elevations due to labelling, decorations, or protective bands or ribs.

4.19 ply A layer of rubber-coated parallel cords.

4.20 ply separation A parting of rubber compound between adjacent plies.

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4.21 ply rating An index of casing strength and therefore the load carrying capacity of a pneumatic tyre. A tyre of a given ply rating is deemed to have the casing strength equivalent to that which the tyre would possess if the casing was constructed from that given number of sheets of rubber coated first quality cotton material.

4.22 pneumatic tyre A mechanical device made of rubber, chemicals, fabric and steel or other materials, which, when mounted on an automotive wheel, provides the traction and contains the gas or fluid that sustains the load.

4.23 radial ply tyre A pneumatic tyre in which the ply cords that extend to the beads are laid at substantially 90° to the centreline of the tread.

4.24 rim A metal support for a tyre or a tyre and tube assembly upon which the tyre beads are seated.

4.25 section width The linear distance between the exteriors of the sidewalls of an inflated tyre, excluding elevations due to labelling, decoration, or protective bands.

4.26 sidewall That portion of a tyre between the tread and the bead.

4.27 sidewall separation The parting of the rubber compound from the cord material in the sidewall.

4.28 tread That portion of a tyre that comes into contact with the road.

4.29 tread groove The space between two adjacent tread ribs.

4.30 tread separation The pulling away of the tread from the tyre carcass.

4.31 tread wear indicator A projection within a tread groove designed to give visual indication of the degree of wear of the tread.

5 Tyre and rim matching information

5.1 Each manufacturer of tyres shall ensure that a listing of the rims that may be used with each tyre that he produces is provided to the public. For purposes of this sub-clause each rim listing shall include dimensional specifications and a diagram of the rim. However a listing compiled in accordance with the requirements of 5.1 (a) need not include dimensional specifications or a diagram of a rim if the rim's dimensional specifications and diagram are contained in each listing published in accordance with the requirements of 5.1 (b). The listing shall be in one of the following forms:

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(a) listed by manufacturer name or brand name in a document furnished to dealers of the manufacturer's tyres, to any person upon request, and to the Bureau of Standards; or

(b) contained in publications, current at the date of manufacture of the tyre or any later date, of at least one of the following organizations:

The Tyre and Rim Association

The European Tyre and Rim Technical Organization

Japan Automobile Tyre Manufacturers' Association, Inc.

Deutsche Industrie Norm

British Standards Institution

Scandinavian Tyre and Rim Organization

The Tyre and Rim Association of Australia

5.2 Information contained in a publication specified in 5.1(b) which lists general categories of tyres and rims by size designation, type of construction, and/or intended use, shall be considered to be manufacturer's information pursuant to 5.1 for the listed tyres, unless the publication itself or specific information provided according to 5.1(a) indicates otherwise.

6 Requirements

Each tyre shall be capable of meeting any of the applicable requirements set forth below, when mounted on a model rim assembly corresponding to any rim designated by the tyre manufacturer for use with the tyre in accordance with clause 5. However, a particular tyre need not meet further performance requirements after having been subjected to and met the endurance requirements 6.1, strength requirements 6.2, or high speed performance requirements 6.3.

6.1 Endurance requirements

6.1.1 Prior to testing in accordance with the procedures (7.2), a tyre shall exhibit no visual evidence of tread, sidewall, ply, cord, inner-liner, or bead separation, chunking, broken cords, cracking, or open splices.

6.1.2 When tested in accordance with the procedures of 7.2:

(a) there shall be no visual evidence of tread, sidewall, ply, cord, inner-liner, or bead separation, chunking, broken cords, cracking, or open splices.

(b) the tyre pressure at the end of the test shall be not less than the initial pressure specified in 7.2(a).

6.2 Strength requirements

When tested in accordance with the procedures of 7.3 a tyre's average breaking energy value shall be not less than the value specified in Table 2 for that tyre's size and load range.

6.3 High speed performance requirements

When tested in accordance with the procedures of 7.3, a tyre shall meet the requirements set forth in 6.1.1 and 6.1.2 (a) and 6.1.2 (b). However, this requirement applies only to motorcycle tyres and to non-speed-restricted tyres of nominal rim diameter of 368 mm or less marked load range A, B, C, or D.

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6.4 Tread wear indicators

Except as specified in this sub-clause, each tyre shall have at least six tread wear indicators spaced approximately equally around the circumference of the tyre that enable a person inspecting the tyre to determine visually whether the tyre has worn to a tread depth of 1.6 mm. Tyres with a rim diameter of 305 mm or smaller shall have at least three such tread wear indicators. Motorcycle tyres shall have at least three such indicators, which permit visual determination that the tyre has worn to a tread depth of 0.8 mm.

6.5 Tyre markings

Except as specified in this sub-clause, each tyre shall be marked on each sidewall with the information specified in 6.5 (a) to 6.5 (k). The markings shall be placed between the maximum section width (exclusive of sidewall decorations or curb ribs) and the bead on at least one sidewall, unless the maximum section width of the tyre is located in an area which is not more than one-fourth of the distance from the bead to the shoulder of the tyre. If the maximum section width falls within that area, the markings shall appear between the bead and a point one-half the distance from the bead to the shoulder of the tyre, on at least one sidewall. The markings shall be in letters and numerals not less than 2 mm high and raised above or sunk below the tyre surface not less that 0.4 mm, except that the marking depth shall be not less than 0.25 mm in the case of motorcycle tyres. Markings may appear on only one sidewall and the entire sidewall area may be used in the case of motorcycle tyres and recreational, boat, baggage, and special trailer tyres.

(a) the tyre identification number which may be marked on only one sidewall.

(b) the tyre size designation as listed in the documents and publications designated in 5.1.

(c) the maximum load rating and corresponding inflation pressure of the tyre, shown as follows:

(1) (mark on tyres rated for single and dual load):

Max load single ----kg (----lb.) at ----kPa (----psi) cold.

Max load dual ----kg (----lb.) at ----kPa (----psi) cold.

(2) (mark on tyres rated only for single load):

Max load ----kg (----lb.) at ----kPa (----psi) cold.

(d) the speed restriction of the tyre, if88 kmlh (55 mph) or less, shown as follows:

Max speed ----kmlh (----mph).

(e) the actual number of plies and the composition of the ply cord material in the sidewall and, if different, in the tread area;

(t) the words 'tubeless' or 'tube type' as applicable.

(g) the word 'regroovable' if the tyre is designed for regrooving.

(h) the word 'radial' if a radial tyre.

(i) the letter designating the tyre load range.

(j) country of origin

(k) Each tyre shall be labelled with the name of the manufacturer, or brand name and number assigned to the manufacturer by the United States Department of Transportation.

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6.6 Maximum load rating

If the maximum load rating for a particular tyre size is shown in one or more of the publications described in 5.1(b), each tyre of that size designation shall have a maximum load rating that is not less than the published maximum load rating, or if there are differing published ratings for the same tyre size designation, not less than the lowest published maximum load rating for the size designation.

6.7 Standards Marking

Each tyre shall be labelled with a marking or markings stating the standard or standards to which the tyre complies which shall constitute a certification that the tyre conforms with the applicable standard or standards. At least one of the standards indicated must meet or exceed the performance requirements described in 6.1, 6.2 and 6.3.

7 Test procedures

7.1 General conditions

7.1.1 The tests are performed using an appropriate new tube, tube valve and flap assembly (as required) that allows no loss of air for testing of tube-type tyres under 7.2, 7.3, and 7.4, and tubeless tyres under 7.3.

7.1.2 The tyre must be capable of meeting the requirements of 7.2 and 7.4 when conditioned to a temperature of 35 °C for 3 h before the test is conducted, and with an ambient temperature maintained at 35 °C during all phases of testing. The tyre must be capable of meeting the requirements of 7.3 when conditioned at a temperature of 21 °C for 3 h before the test is conducted.

7.2 Endurance

Conduct Endurance test as follows:

(a) mount the tyre on a model rim assembly and inflate it to the inflation pressure corresponding to the maximum load rating marked on the tyre. Use a single maximum load value when the tyre is marked with both single and dual maximum load.

(b) after conditioning the tyre-rim assembly in accordance with 7.1.2, adjust the tyre pressure to that specified in 7.2(a) immediately before mounting the tyre rim assembly.

(c) mount the tyre-rim assembly on an axle and press it against a flat-faced steel test wheel that is 1708 nun in diameter and at least as wide as the tread of the tyre.

(d) apply the test load and rotate the test wheel as indicated in Table 3 for the type of tyre tested conducting each successive phase of the test without interruption.

(e) immediately after running the tyre the required time, measure the tyre inflation pressure. Remove the tyre from the model rim assembly, and inspect the tyre.

7.3 Strength

Conduct Strength test as follows:

(a) mount the tyre on a model rim assembly and inflate it to the pressure corresponding to the maximum load, or maximum dual load where there is both a single and dual load marked on the tyre. If the tyre is tubeless, a tube may be inserted to prevent loss of air during the test in the event of puncture.

(b) after conditioning the tyre-rim assembly in accordance with 7.1.2, adjust the tyre pressure to that specified in 7.3 (a).

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(c) force a cylindrical steel plunger, with a hemispherical end and of the diameter specified in Table 1 for the tyre size, perpendicularly into a raised tread element as near as possible to the centreline of the tread, at a rate of 50 mm per min, until the tyre breaks or the plunger is stopped by the rim.

(d) record the force and the distance of penetration just before the tyre breaks, or if it fails to break, just before the plunger is stopped by the rim.

(e) repeat the plunger application at 72° intervals around the circumference of the tyre, until five measurements are made. However, in the case of tyres of rim diameter 305 mm or smaller, repeat the plunger application at 120° intervals around the circumference of the tyre, until three measurements are made.

(f) compute the breaking energy for each test point by the following formula: W = [(F x P)/2] x 10-3 (joules)

Where:

W = Breaking energy (in joules) (kJ) F =Force in newtons (N) and

P = Penetration in millimetres (mm), or;

(g) Determine the average breaking energy value for the tyre by computing the average of the values obtained in accordance with paragraph 7.3 (f).

7.4 High speed performance

Conduct High-speed performance test as follows:

(a) perform steps 7.2 (a) to 7.2 (c).

(b) apply a force of88% of the maximum load rating marked on the tyre (use single maximum load value when the tyre is marked with both single and dual maximum loads), and rotate the test wheel at 250 rpm for 2 h.

(c) remove the load, allow the tyre to cool to 35 °C, and then adjust the pressure to that marked on the tyre for single tyre use.

(d) reapply the same load, and without interruption or readjustment of inflation pressure, rotate the test wheel at 375 rpm for 30 min, then at 400 rpm for 30 min, and then at 425 rpm for 30 min.

(e) immediately after running the tyre the required time, measure the tyre inflation pressure. Remove the tyre from the model rim assembly, and inspect the tyre.

8 Nonconforming tyres

No tyre that is designed for use on vehicles other than passenger cars but does not conform to all the requirements of this standard, shall be sold, offered for sale, introduced or delivered for introduction into inter-country commerce, or imported into Jamaica, for any purpose.

9 Disposal

All non-conforming tyres shall be isolated and disposed of by a method, including re-export at the importer's expense, approved by the Bureau of Standards and in the presence of an officer of the Bureau of Standards.

10 Reporting

The Bureau's representative witnessing the disposal of non-conforming tyres shall prepare a report containing the following information:

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(a) name and address of manufacturer or owner of the non-conforming tyres;

(b) a list of the serial numbers of the tyres disposed of;

(c) the number of tyres disposed of;

(d) the date of disposal;

(e) the method of disposal

A copy of the report shall be sent to the manufacturer or owner of the non-conforming tyres and the original kept by the Bureau of Standards.

Table 1 — Strength Test Plunger Diameter

Table 2 — Minimum Static Breaking Energy

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Table 3 — Endurance Test Schedule

Standards Council

The Standards Council is the controlling body of the Bureau of Standards Jamaica and is responsible for the policy and general

administration of the Bureau.

The Council is appointed by the Minister in the manner provided for in the Standards Act, 1969. Using its powers in the Standards

Act, the Council appoints committees for specified purposes.

The Standards Act, 1969 sets out the duties of the Council and the steps to be followed for the formulation of a standard.

Preparation of standards documents

The following is an outline of the procedure which must be followed in the preparation of documents:

1. The preparation of standards documents is undertaken upon the Standard Council’s authorisation. This may arise out of

representation from national organisations or existing Bureau of Standards’ Committees of Bureau staff. If the project is

approved it is referred to the appropriate sectional committee or if none exists a new committee is formed, or the project is allotted to the Bureau’s staff.

2. If necessary, when the final draft of a standard is ready, the Council authorises an approach to the Minister in order to obtain the formal concurrence of any other Minister who may be responsible for any area which the standard may affect.

3. The draft document is made available to the general public for comments. All interested parties, by means of a notice in the Press, are invited to comment. In addition, copies are forwarded to those known, interested in the subject.

4. The Committee considers all the comments received and recommends a final document to the Standards Council

5. The Standards Council recommends the document to the Minister for publication.

6. The Minister approves the recommendation of the Standards Council.

7. The declaration of the standard is gazetted and copies placed on sale.

8. On the recommendation of the Standards Council the Minister may declare a standard compulsory.

9. Amendments to and revisions of standards normally require the same procedure as is applied to the preparation of the

original standard.

Overseas standards documents

The Bureau of Standards Jamaica maintains a reference library which includes the standards of many overseas standards

organisations. These standards can be inspected upon request.

The Bureau can supply on demand copies of standards produced by some national standards bodies and is the agency for the sale of

standards produced by the International Organization for Standardization (ISO) members.

Application to use the reference library and to purchase Jamaican and other standards documents should be addressed to:

Bureau of Standards Jamaica

6 Winchester Road P.O. Box 113,

Kingston 10

JAMAICA, W. I.