The dimensions of the wheel are mentioned in a letter, this one determines a
The specific dimension of the wheel.

D Diameter                              T Thickness of body                 H Bore
U Thickness of the section   X Depth of the section          W Rim width
V Face angle                            A Angle n°1                            B Angle n°2
R Radius                         T1 Reduced hub thickness    U1 Reduced thickness of the section
E Thickness at bore      K Inside recess diameter             J Hub diameter
d Offset diameter from body       S Angle of body             BC Bolt circle