ISO 8644-2006 PDF

Full title and description

St ISO 8644-2006 — Motorcycles — Light-alloy wheels — Test method. This International Standard specifies standardized laboratory test methods to determine the performance and durability of light-alloy road wheels used on motorcycles and three-wheeled vehicles (including those with side‑cars), covering unit-construction and composite-construction light-alloy wheels.

Abstract

ISO 8644:2006 provides test procedures, equipment requirements and performance criteria for mechanical durability (fatigue), radial load endurance, impact resistance, torsional fatigue and airtightness (for tubeless tyres) of motorcycle light-alloy wheels, with formulas and test conditions derived from wheel load ratings and tyre geometry. The standard replaces ISO 8644:1988 and is intended to simulate normal road use stresses in the laboratory.

General information

• Status: Published (current).
• Publication date: 17 October / November 2006 (Edition 2, 2006).
• Publisher: International Organization for Standardization (ISO).
• ICS / categories: 43.140 – Motorcycles and mopeds.
• Edition / version: Edition 2 (ISO 8644:2006), supersedes ISO 8644:1988.
• Number of pages: 11 pages.

Scope

The standard applies to light-alloy wheels for motorcycles and three-wheeled vehicles (including those with side‑cars) as defined by ISO 3833. It covers both unit-construction and composite-construction light-alloy wheels intended for normal road use and defines laboratory tests to assess durability, impact resistance and airtightness where applicable.

Key topics and requirements

• Rotational bending fatigue test — evaluates bending endurance under a constant bending moment with the wheel rotating.
• Radial load durability (wheel/tyre drum) test — simulates repeated radial loads against a rotating drum to assess rim and spoke durability.
• Radial impact resistance test — single-impact, pendulum or double-mass striker methods to assess rim impact performance.
• Torsional fatigue test — cyclic torsional moment applied between hub and rim to simulate driving torque and assess fastening/joint integrity.
• Airtightness (air leak) test — applicable to wheels marked for tubeless tyres to verify airtight performance.
• Test equipment, calculation methods and acceptance/failure criteria — the standard specifies striker masses, drum diameters, tyre inflation pressures, load calculations and end-point/failure definitions.

Typical use and users

Manufacturers of motorcycle light-alloy wheels, component and vehicle test laboratories, type approval and certification bodies, motorcycle OEMs, aftermarket wheel producers and R&D teams use ISO 8644:2006 to verify product durability and safety during design validation, production control and certification testing.

Related standards

References and related documents include ISO 3833 (vehicle type/definitions) and national/adopted equivalents (for example GB/T 22435-2008 adopted from ISO 8644:2006). The 2006 edition replaces ISO 8644:1988. Additional regional or national standards on wheel testing and vehicle component approval may be used alongside ISO 8644:2006.

Keywords

motorcycle wheels, light-alloy wheels, wheel testing, fatigue test, impact resistance, radial load test, torsional fatigue, airtightness, ISO 8644

FAQ

Q: What is this standard?

A: ISO 8644:2006 is an International Standard that defines laboratory test methods for assessing the performance and durability of light-alloy road wheels for motorcycles and related three-wheeled vehicles.

Q: What does it cover?

A: It covers test procedures for rotational bending fatigue, radial load durability, radial impact resistance, torsional fatigue and airtightness (for tubeless tyres), plus required test equipment, calculation formulas and acceptance criteria to simulate normal road stresses.

Q: Who typically uses it?

A: Wheel and motorcycle manufacturers, third‑party test laboratories, certification bodies, OEM engineering and quality teams, and aftermarket wheel producers use this standard for design validation and compliance testing.

Q: Is it current or superseded?

A: The 2006 edition (Edition 2) is the published replacement for ISO 8644:1988. As of the 2006 publication it is the current ISO edition; users should check their national standards body or ISO catalog for any later revisions or confirmations.

Q: Is it part of a series?

A: It is a stand‑alone test method standard specific to motorcycle light-alloy wheels but is used together with vehicle definition and related component standards (for example ISO 3833 for vehicle types). National adoptions may exist (e.g., GB/T equivalents).

Q: What are the key keywords?

A: Motorcycle, light‑alloy wheel, rim, fatigue, impact test, radial load, torsion, airtightness, wheel testing, ISO 8644.