ISO 7141:2022
(Main)Road vehicles — Light alloy wheels — Lateral impact test
Road vehicles — Light alloy wheels — Lateral impact test
This document specifies a laboratory test procedure to evaluate the axial (lateral) kerb impact collision properties of a wheel manufactured either wholly or partly of light alloys. It is intended for passenger car applications, and special vehicle applications where there is a possibility of the wheel impacting the kerb, with the purpose of screening and/or quality control of the wheel.
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INTERNATIONAL ISO
STANDARD 7141
Fourth edition
2022-04
Road vehicles — Light alloy wheels —
Lateral impact test
Reference number
ISO 7141:2022(E)
© ISO 2022
---------------------- Page: 1 ----------------------
ISO 7141:2022(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2022
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii
© ISO 2022 – All rights reserved
---------------------- Page: 2 ----------------------
ISO 7141:2022(E)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Test equipment .1
5 Calibration .1
6 Test procedure .2
7 Failure criteria .2
Annex A (informative) Velocity sensor set-up and measuring procedure . 8
iii
© ISO 2022 – All rights reserved
---------------------- Page: 3 ----------------------
ISO 7141:2022(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 (see 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 (see 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 of the voluntary nature of standards, the meaning of ISO specific terms and
expressions related to conformity assessment, as well as information about ISO's adherence to
the World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT), see
www.iso.org/iso/foreword.html.
This document was prepared by Technical Committee ISO/TC 22, Road vehicles, Subcommittee SC 33,
Vehicle dynamics and chassis components.
This fourth edition cancels and replaces the third edition (ISO 7141:2005), which has been technically
revised.
The main changes are as follows:
— editorial modifications;
— addition of subclause 5.1 and corresponding Annex A;
— Clause 7 failure criteria, clarification and insertion of examples in Figure 3.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www.iso.org/members.html.
iv
© ISO 2022 – All rights reserved
---------------------- Page: 4 ----------------------
ISO 7141:2022(E)
Introduction
The purpose of this document is to improve the repetitious accuracy and the application for increasing
wheel diameters and static wheel loads.
Therefore, it is necessary to describe the test rig in more details and include additional descriptions for
failure criteria.
v
© ISO 2022 – All rights reserved
---------------------- Page: 5 ----------------------
INTERNATIONAL STANDARD ISO 7141:2022(E)
Road vehicles — Light alloy wheels — Lateral impact test
1 Scope
This document specifies a laboratory test procedure to evaluate the axial (lateral) kerb impact collision
properties of a wheel manufactured either wholly or partly of light alloys. It is intended for passenger
car applications, and special vehicle applications where there is a possibility of the wheel impacting the
kerb, with the purpose of screening and/or quality control of the wheel.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. 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
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 3911 apply.
ISO and IEC maintain terminology databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https:// www .iso .org/ obp
— IEC Electropedia: available at https:// www .electropedia .org/
4 Test equipment
4.1 New wheels, fully processed, representative of wheels intended for vehicle application, fitted
with a tyre. Tyres and wheels used in the tests should not be used subsequently on a vehicle.
4.2 Impact loading test machine with a vertically acting steel striker having an impacting face, in
accordance with Figure 1. The striker mass, m, within a tolerance of ±2 %, expressed in kilograms, shall
be as follows:
mW=+06, 180
where W is the maximum vertical static load which is specified by the wheel or the vehicle manufacturer,
expressed in kilograms. In the absence of such specification, the largest value of the load rating of the
tyre which can be applied to the wheel for the application.
4.3 Mass of 1 000 kg.
5 Calibration
Ensure, by means of a test calibration adapter, that the 1 000 kg mass (4.3) applied vertically to the
centre of the wheel fixing as shown in Figure 2 causes a deflection of (7,5 ± 0,75) mm when measured at
the centre of the beam.
1
© ISO 2022 – All ri
...
FINAL
INTERNATIONAL ISO/FDIS
DRAFT
STANDARD 7141
ISO/TC 22/SC 33
Road vehicles — Light alloy wheels —
Secretariat: DIN
Lateral impact test
Voting begins on:
2021-12-21
Voting terminates on:
2022-02-15
RECIPIENTS OF THIS DRAFT ARE INVITED TO
SUBMIT, WITH THEIR COMMENTS, NOTIFICATION
OF ANY RELEVANT PATENT RIGHTS OF WHICH
THEY ARE AWARE AND TO PROVIDE SUPPOR TING
DOCUMENTATION.
IN ADDITION TO THEIR EVALUATION AS
Reference number
BEING ACCEPTABLE FOR INDUSTRIAL, TECHNO-
ISO/FDIS 7141:2021(E)
LOGICAL, COMMERCIAL AND USER PURPOSES,
DRAFT INTERNATIONAL STANDARDS MAY ON
OCCASION HAVE TO BE CONSIDERED IN THE
LIGHT OF THEIR POTENTIAL TO BECOME STAN-
DARDS TO WHICH REFERENCE MAY BE MADE IN
NATIONAL REGULATIONS. © ISO 2021
---------------------- Page: 1 ----------------------
ISO/FDIS 7141:2021(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2021
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii
© ISO 2021 – All rights reserved
---------------------- Page: 2 ----------------------
ISO/FDIS 7141:2021(E)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Test equipment .1
5 Calibration .1
6 Test procedure .2
7 Failure criteria .2
Annex A (informative) Velocity sensor set-up and measuring procedure . 8
iii
© ISO 2021 – All rights reserved
---------------------- Page: 3 ----------------------
ISO/FDIS 7141:2021(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 (see 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 (see 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 of the voluntary nature of standards, the meaning of ISO specific terms and
expressions related to conformity assessment, as well as information about ISO's adherence to
the World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT), see
www.iso.org/iso/foreword.html.
This document was prepared by Technical Committee ISO/TC 22, Road vehicles, Subcommittee SC 33,
Vehicle dynamics and chassis components.
This fourth edition cancels and replaces the third edition (ISO 7141:2005), which has been technically
revised.
The main changes are as follows:
— editorial modifications;
— addition of subclause 5.1 and correspondant Annex A;
— Clause 7 failure criteria, clarification and insertion of examples in Figure 3.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www.iso.org/members.html.
iv
© ISO 2021 – All rights reserved
---------------------- Page: 4 ----------------------
ISO/FDIS 7141:2021(E)
Introduction
The purpose of this document is to improve the repetitious accuracy and the application for increasing
wheel diameters and static wheel loads.
Therefore, it is necessary to describe the test rig in more details and include additional descriptions for
failure criteria.
v
© ISO 2021 – All rights reserved
---------------------- Page: 5 ----------------------
FINAL DRAFT INTERNATIONAL STANDARD ISO/FDIS 7141:2021(E)
Road vehicles — Light alloy wheels — Lateral impact test
1 Scope
This document specifies a laboratory test procedure to evaluate the axial (lateral) kerb impact collision
properties of a wheel manufactured either wholly or partly of light alloys. It is intended for passenger
car applications, and special vehicle applications where there is a possibility of the wheel impacting the
kerb, with the purpose of screening and/or quality control of the wheel.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. 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
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 3911 apply.
ISO and IEC maintain terminology databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https:// www .iso .org/ obp
— IEC Electropedia: available at https:// www .electropedia .org/
4 Test equipment
4.1 New wheels, fully processed, representative of wheels intended for vehicle application, fitted
with a tyre. Tyres and wheels used in the tests should not be used subsequently on a vehicle.
4.2 Impact loading test machine with a vertically acting steel striker having an impacting face, in
accordance with Figure 1. The striker mass, m, within a tolerance of ±2 %, expressed in kilograms, shall
be as follows:
mW=+06, 180
where W is the maximum vertical static load which is specified by the wheel or the vehicle manufacturer,
expressed in kilograms. In the absence of such specification, the largest value of the load rating of the
tyre which can be applied to the wheel for the application.
4.3
...
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