ISO 24163-1:2024

Overview

ISO 24163-1:2024 is the internationally recognized standard for clamp-in tyre valves for tyre pressure monitoring systems (TPMS). Developed by ISO, this standard specifies the types, definitions, critical dimensions, and valve-to-rim interface requirements for clamp-in tubeless tyre valves. It is applicable to valves fitted into rims with an 11.3 mm valve hole diameter, predominantly used in passenger cars and light commercial vehicles in the M1 and N1 categories.

The document provides specifications that ensure reliable, consistent integration of TPMS clamp-in valves, supporting tyre safety and the functionality of modern pressure monitoring systems. By adhering to these guidelines, manufacturers, workshops, and service providers can ensure compatibility, performance, and user safety in the design and maintenance of tyre assemblies.

Key Topics

ISO 24163-1:2024 covers the following essential areas:

• Valve Definitions and Types: Establishes definitions for clamp-in valves, retainer washers, valve body, valve core, and TPMS functionality.
• Valve Body Dimensions: Specifies minimum standards for valve threads and body dimensions based on common industry types and sizes, referencing ISO 9413.
• Sealing Types: Details three main sealing elements-grommet, T-grommet, and O-ring-and offers guidance on their application to ensure airtight performance.
• Valve Core and Cap: Highlights requirements for short valve cores (recommendation for nickel-plated types to prevent electrochemical failures) and describes various cap types, including guidelines for materials and design to minimize contamination and corrosion.
• Nut and Washer Specifications: Outlines acceptable sizes, threading types, and the use of washers (both attached and separated) for secure and durable installation.
• Marking and Traceability: Recommends markings or circumferential devices to denote TPMS compatibility and emphasizes traceability markings (such as production codes) for quality assurance.
• Rim Interface and Installation: Sets out rim preparation requirements, such as chamfering and freedom from burrs, and defines installation procedures to ensure proper clamping and sealing.
• Pressure Ratings: Defines typical cold inflation pressure limits and torque recommendations for nut installation, varying by valve and sealing type.

Applications

The practical value of ISO 24163-1:2024 is significant across several automotive industry stakeholders:

• Automotive Valve Manufacturers: Provides baseline requirements for the production of clamp-in TPMS valves, ensuring compatibility with industry-standard rim holes and support for the safe monitoring of tyre pressure.
• Tyre and Wheel Assemblers: Ensures that replacement and OEM tyre valves will fit correctly, function reliably with TPMS technology, and maintain system integrity throughout the life of the tyre.
• Automotive Workshops and Service Centers: Offers guidance for the correct installation, replacement, and maintenance of TPMS valves, including safe torque application and component substitution during tyre renewals.
• Vehicle OEMs and TPMS Providers: Supports the design and assembly of safe, standardized TPMS integrations, reducing the potential for errors and incompatibility across global markets.
• Quality and Compliance Professionals: Assists in traceability and verification, helping maintain product quality standards and support regulatory compliance with tyre safety systems.

By following ISO 24163-1:2024, organizations enhance tyre reliability, vehicle safety, and the consumer’s confidence in TPMS-equipped vehicles.

Related Standards

For comprehensive implementation and further technical details, the following standards are closely related to ISO 24163-1:2024:

• ISO 9413 - Tyre valves - Dimensions and designation
• ISO 4000-2:2021 - Passenger car tyres and rims - Part 2: Rims

These references provide additional dimensions, nomenclature, and compatibility factors crucial for full compliance with international standards for tyre valves and TPMS integration.

Keywords: ISO 24163-1:2024, clamp-in tyre valves, TPMS, tubeless tyre valves, valve dimensions, rim interface, automotive standard, tyre pressure monitoring systems, ISO tyre standards, valve installation, vehicle safety.