ISO 4250-3:2011 Preview
Earth-mover tyres and rims -- Part 3: Rims
ISO 4250-3:2011 sets out the designation, contours and dimensions for rims for narrow- and wide-base off-road tyres primarily intended for earth-moving machinery.
All dimensions in ISO 4250-3:2011 are given in millimetres and are applicable to the side of the rim which is in contact with the tyre.
Annex A gives details on sealing ring grooves and O-rings for earth-mover rims.