ISO 24469:2023 PDF

Overview

ISO 24469:2023 - Road wear test of studded tyres - defines a laboratory/track test method to evaluate the wear that studded passenger-car and light-truck tyres cause to road surfaces. The method quantifies road damage by measuring the mass loss of prepared granite test stones after controlled vehicle passes, providing repeatable data for tyre development, regulatory assessment and pavement impact studies.

Key topics and technical requirements

• Test principle: Drive a test vehicle 200 times over the evaluation stone array (400 tyre passes) and derive road wear from the mass reduction of the evaluation stones.
• Test material: Kuru grey granite is specified for test stones; alternative materials require correlation testing.
• Test stones: Fifteen evaluation stones and five reference stones from the same production batch; individually numbered and used only once.
• Weighing procedure: Clean, dry in a convection oven at 110 °C ±1 °C for 72 h ±2 h, cool in a desiccator 120 min ±5 min (humidity