ISO/DIS 13988

Passenger vehicle wheels -- Clip balance weight and rim flange nomenclature, test procedures and performance requirements

Roues pour véhicules particuliers -- Nomenclature des masselottes d'équilibrage clippées et des rebords de jantes, méthodes d'essai et exigences de performance

Standards Content (sample)

DRAFT INTERNATIONAL STANDARD
ISO/DIS 13988
ISO/TC 22/SC 33 Secretariat: DIN
Voting begins on: Voting terminates on:
2020-09-09 2020-12-02
Passenger vehicle wheels — Clip balance weight and rim
flange nomenclature, test procedures and performance
requirements

Roues pour véhicules particuliers — Nomenclature des masselottes d'équilibrage clippées et des rebords de

jantes, méthodes d'essai et exigences de performance
ICS: 43.040.50
THIS DOCUMENT IS A DRAFT CIRCULATED
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ISO/DIS 13988:2020(E)
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ISO/DIS 13988:2020(E)
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ii © ISO 2020 – All rights reserved
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ISO/DIS 13988:2020(E)
Contents Page

Foreword ........................................................................................................................................................................................................................................iv

Introduction ..................................................................................................................................................................................................................................v

1 Scope ................................................................................................................................................................................................................................. 1

2 Normative references ...................................................................................................................................................................................... 1

3 Terms and definitions ..................................................................................................................................................................................... 1

4 Rim flange types .................................................................................................................................................................................................... 5

5 Test procedure for clip on balance weight ................................................................................................................................. 6

5.1 Preparation of clip on balance weight for test ............................................................................................................. 6

5.1.1 Selection of balance weights .................................................................................................................................. 6

5.1.2 Measurement of key dimensions of balance weights ....................................................................... 6

5.1.3 Marking of balance weights .................................................................................................................................... 6

5.2 Preparation of the wheel for clip on balance weight testing ........................................................................... 6

5.2.1 Cleaning ................................................................................................................................................................................... 6

5.2.2 Marking .................................................................................................................................................................................... 6

5.2.3 Measurement of rim flange dimensions ...................................................................................................... 6

5.3 Installation of clip on balance weight.................................................................................................................................. 6

5.4 Tangential Test for clip on balance weight ...................................................................................................................... 7

5.4.1 General...................................................................................................................................................................................... 7

5.4.2 Test equipment .................................................................................................................................................................. 7

5.4.3 Test sequence .................. .................................................... ................................................................................................ 8

5.4.4 Performance requirements tangential force............................................................................................ 8

5.5 Axial removal test for clip on balance weight ............................................................................................................... 8

5.5.1 Test equipment .................................................................................................................................................................. 8

5.5.2 Test sequence .................. .................................................... ................................................................................................ 8

5.5.3 Performance requirement axial force .........................................................................................................10

6 Test Procedure for adhesive balance weights for all size weights and wheels .................................10

6.1 Test Equipment ....................................................................................................................................................................................10

6.2 Wheel preparation ............................................................................................................................................................................11

6.3 Balance weight selection and installation ....................................................................................................................12

7 Shear adhesion test.........................................................................................................................................................................................12

7.1 Test Procedure......................................................................................................................................................................................12

7.2 Performance ...........................................................................................................................................................................................12

8 Pull off adhesion test .....................................................................................................................................................................................12

8.1 Test procedure ......................................................................................................................................................................................12

8.2 Performance ...........................................................................................................................................................................................13

© ISO 2020 – All rights reserved iii
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ISO/DIS 13988:2020(E)
Foreword

ISO (the International Organization for Standardization) is a worldwide federation of national standards

bodies (ISO member bodies). The work of preparing International Standards is normally carried out

through ISO technical committees. Each member body interested in a subject for which a technical

committee has been established has the right to be represented on that committee. International

organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.

ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of

electrotechnical standardization.

The procedures used to develop this document and those intended for its further maintenance are

described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the

different types of ISO documents should be noted. This document was drafted in accordance with the

editorial rules of the ISO/IEC Directives, Part 2. www .iso .org/ directives

Attention is drawn to the possibility that some of the elements of this document may be the subject of

patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of

any patent rights identified during the development of the document will be in the Introduction and/or

on the ISO list of patent declarations received. www .iso .org/ patents

Any trade name used in this document is information given for the convenience of users and does not

constitute an endorsement.

For an explanation on the meaning of ISO specific terms and expressions related to conformity

assessment, as well as information about ISO's adherence to the WTO principles in the Technical

Barriers to Trade (TBT) see the following URL: Foreword - Supplementary information

The committee responsible for this document is ISO/TC22/SC33/WG5.

This WD13988 adds adhesive balance weights to the existing standard which covers clip on weights

only. Nomenclature for the balance weight and test procedures and performance requirements for the

adhesive weights are included.
iv © ISO 2020 – All rights reserved
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ISO/DIS 13988:2020(E)
Introduction

This International Standard addresses clip and adhesive balance weights used on passenger car wheels.

It provides general features and configurations of the clip balance weights, general features of the

adhesive balance weights and general features and configurations for rim dimensions relavant to clip

on weights and defines terms used to describe these features.

This International Standard provides test procedures to evaluate weight retention on the wheel.

© ISO 2020 – All rights reserved v
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ISO/DIS 13988:2020(E)
© ISO 2020 – All rights reserved vii
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DRAFT INTERNATIONAL STANDARD ISO/DIS 13988:2020(E)
Passenger vehicle wheels — Clip balance weight and rim
flange nomenclature, test procedures and performance
requirements
1 Scope

This International Standard specifies procedures and minimum performance requirements for testing

without tyres the retention of balance weights for use on wheels for passenger vehicles. It also specifies

general features for configurations of clip balance weights, rim flanges for light alloy and steel wheels

intended for use on passenger cars and adhesive balance weights. Alternative materials and geometries

can be considered in the future.
2 Normative references

The following documents, in whole or in part, are normatively referenced in this document and are

indispensable for its application. For dated references, only the edition cited applies. For undated

references, the latest edition of the referenced document (including any amendments) applies.

ISO 3911, Wheels and rims for pneumatic tyres — Vocabulary, designation and marking

ISO 4000-1, Passenger car tyres and rims — Part 1: Tyres (metric series)
ISO 4000-2, Passenger car tyres and rims — Part 2: Rims

ISO 4223-1, Definitions of some terms used in the tyre industry — Part 1: Pneumatic tyres

3 Terms and definitions

For the purposes of this document, the definitions given in ISO 4223-1, ISO 4000-1, ISO 4000-2, ISO 3911

and the following apply.
3.1
Clip Balance weight assembly

Assembly of the weight and the clip, which is intended for mounting on the rim flange to balance the

tyre/wheel assembly about its axis of rotation and thus minimize vibrations due to the rotation of the

tyre/wheel assembly

Note 1 to entry: Figure 1 gives the terminology and nomenclature of balance weight assembly

3.1.1
Weight

Material of a specified mass with contours to conform to the surface of the rim flange. The material is

recommended to be free of lead.
3.1.2
Clip

Specially formed metal affixed to the weight to mount the balance weight on the rim flange

3.1.3
Spur

Optional part of a clip that protrudes from its surface interfacing with the rim flange

© ISO 2020 – All rights reserved 1
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ISO/DIS 13988:2020(E)
3.1.4
Balance weight coating
Non-corrosive material coating to avoid corrosion
EXAMPLE Polyester, nylon.
3.1.5
Balance weight key dimensions
Dimensions that are essential for fitting the balance weight on the rim flange
3.1.6
Balance weight size
Size determined by the magnitude of the balance weight mass, expressed in grams
3.1.7
Balance weight retention force

Static force required to remove the balance weight from the rim flange, expressed in newtons

3.1.8
Balance weight retention

Ability of the balance weight to maintain its secure position on the rim flange in various service

condition
...