Document ID: chunk:federal_register_of_legislation:F2018L01517:front:0:p6
Version: federal_register_of_legislation:F2018L01517
Segment Type: other
Provision Reference: 
Character Range: 15496–16070

the tyre design type, the nominal outer diameter expressed in mm;
2.20.1.3. A conventional number "d" (the "d" symbol) denoting the nominal diameter of the rim and corresponding to its diameter expressed either in codes (number below 100) or in millimetres (numbers above 100).  Numbers corresponding to both types of measurement may be used together in the designation;
2.20.1.3.1. The values of the "d" symbols expressed in millimetres are shown below:
                                        Value of the "d" symbol
Nominal rim diameter code ("d" symbol)  expressed in mm