ISO 10191-2021 PDF

Full title and description

ISO 10191:2021 — Passenger car tyres — Verifying tyre capabilities — Laboratory test methods. This international standard specifies laboratory test methods used to verify the capabilities and basic performance of passenger-car tyres under controlled conditions (endurance, high-speed, low-pressure performance, bead unseating and strength-related tests).

Abstract

This document defines a set of laboratory test procedures for passenger car tyres to verify capability and safety-related behaviour. The tests are not intended to grade or classify tyres by performance level but to confirm their capability according to specified test methods; some tests may only apply depending on tyre construction (diagonal, bias-belted, radial or T-type). Key test types include endurance, low-pressure performance, high-speed testing and assessments of bead unseating and tyre strength.

General information

• Status: Published
• Publication date: 9 August 2021
• Publisher: International Organization for Standardization (ISO)
• ICS / categories: 83.160.10 — Road vehicle tyres
• Edition / version: Edition 4 (2021)
• Number of pages: 16

Basic bibliographic and lifecycle details as published by ISO.

Scope

ISO 10191:2021 applies to all passenger car tyres and specifies laboratory test methods for verifying tyre capabilities under controlled conditions. The scope covers endurance tests (long-distance and full-load endurance), low-pressure performance tests, high-speed tests aligned with the tyre speed category, and tests for bead unseating and tread/tire strength related to braking energy. The standard clarifies that the methods are verification tests rather than procedures for performance grading.

Key topics and requirements

• Endurance testing: procedures to assess tyre durability under full load and prolonged running.
• Low-pressure performance tests: methods to verify behaviour and capability at reduced inflation pressures.
• High-speed testing: tests matched to the tyre’s speed category to assess stability and integrity.
• Bead unseating assessment: procedures to evaluate the resistance to bead unseating under specified conditions.
• Tread and tyre strength tests: methods related to strength under braking energy and other load conditions.
• Application guidance: which tests apply depending on tyre construction types (radial, bias, etc.).

These are the principal test families and requirements described in the standard for laboratory verification of passenger-car tyres.

Typical use and users

Primary users include tyre manufacturers, independent testing laboratories, vehicle manufacturers (for component verification), certification and type-approval bodies, and research organizations involved in tyre development and safety testing. The standard is used to verify that tyres meet capability expectations under controlled laboratory conditions prior to market release or as part of internal quality verification programs.

Related standards

ISO 10191:2021 replaces earlier editions of ISO 10191 (including the 2010 and 1995 editions). It is part of the ISO/TC 31/SC 3 body of work addressing tyre testing and is intended to be used alongside other national and international tyre and vehicle regulations and standards (e.g., national adoptions and UNECE regulations) that address tyre dimensions, markings, and performance requirements. Users commonly consult related ISO/TC 31 publications and relevant national adoptions for complete regulatory context.

Keywords

passenger car tyres, tyre testing, laboratory test methods, endurance test, high-speed test, low-pressure performance, bead unseating, tyre strength, ISO/TC 31, tyre verification.

FAQ

Q: What is this standard?

A: ISO 10191:2021 is an international standard specifying laboratory test methods to verify the capabilities of passenger-car tyres (endurance, high-speed, low-pressure, bead unseating and strength tests).

Q: What does it cover?

A: It covers test procedures carried out in laboratory conditions to verify tyre capability; it is not intended for performance grading but for verification applicable to different tyre constructions. Tests include endurance, low-pressure performance, high-speed testing and bead unseating/strength assessments.

Q: Who typically uses it?

A: Tyre manufacturers, independent and OEM test laboratories, regulatory and type-approval bodies, and research institutions involved in tyre development and verification routinely use this standard.

Q: Is it current or superseded?

A: ISO 10191:2021 is the current published edition (edition 4, published August 2021) and supersedes earlier editions such as ISO 10191:2010 and ISO 10191:1995.

Q: Is it part of a series?

A: It forms part of ISO/TC 31’s body of standards related to tyres and tyre testing; users often reference other ISO/TC 31/SC 3 documents and relevant national/adopted versions when conducting comprehensive tyre verification and compliance activities.

Q: What are the key keywords?

A: Passenger car tyres, tyre testing, laboratory methods, endurance, high-speed, low-pressure performance, bead unseating, tyre strength.