SR ISO 8664:2024

<p>This document specifies the marking, dimensions, load ratings and reference speeds for code-designated agricultural tractor drive-wheel tyres with service description (load index and speed symbol).</p> <p>It applies to tyres of radial construction in the speed categories 40 km/h (speed symbol A8), and 50 km/h (speed symbol B).</p> <p>NOTE Code designated series of:</p> <p>— diagonal (ply rating marked) tyres for agricultural tractors and machines are specified in ISO 4251‑1 and ISO 4251‑2;</p> <p>— tyres for logging and forestry machines are specified in ISO 18807^{^[1]};</p> <p>— tyres for construction/industrial tractors are specified in ISO 13442.</p> <p>^{^[1]} To be published.</p>