ISO/DIS 13988

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

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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

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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

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

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

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

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

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

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

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

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

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

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

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

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