Ply Rating 1 : Term used to identify a given rubber tyre with its maximum recommended load when used in a specific type of service. An index of the tyre strength; it does not necessarily represent the number of cord plies in the tyre
Peter Milne and Kieran Sharp, ARRB Group, and Bob Ungers, consultant, Austroads Glossary of Terms (4th Ed.), Austroads Ltd., Sydney, NSW, Australia 2010. http://www.bicyclensw.org.au/files/u1/Austroads_Gl ossary_of_Terms_4th_edition.pdf (Road Trfc and Transp Sfty - Brit) {529}