Historical
ISO 4209-2:1993
Truck and bus tyres and rims (metric series) - Part 2 : Rims
Specifies the designations, contours and dimensions of drop-centre (one-piece) rims. The rim dimensions are those rim contour dimensions necessary for mounting and fitment of the tyre to the rim. Tyre designations, dimensions and load ratings are given in ISO 4209-1.
International Organization for Standardization [iso]