ISO 8664:2005 specifies the marking, dimensions, load ratings and reference speeds for existing series of agricultural tractor drive-wheel tyres with service description (load index and speed symbol).
It applies to tyres of radial construction in the speed categories 30 km/h (speed symbol A6), 40 km/h (speed symbol A8), and 50 km/h (speed symbol B)
Status : WithdrawnPublication date : 2005-06
Edition : 2Number of pages : 6
Technical Committee:Agricultural tyres and rims