Annex 5 to this Regulation or, depending on 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: Nominal rim diameter code Value of the "d" symbol ("d" symbol) expressed in mm 8 203 9 229 10 254 11 279 12 305 13 330 14 356 15 381 16 406 17 432 18 457 19 483 20 508 21 533 22 559 24 610 25 635 14.5 368 16.5 419 17.5 445 19.5 495 20.5 521 22.5 572 24.5 622 26 660 28 711 30 762 2.20.1.4. An indication of the tyre to rim fitment configuration when it differs from the standard configuration and is not already expressed by the symbol "d" denoting the nominal rim diameter code; 2.21. "Nominal means the diameter of the rim on which a tyre rim diameter (d)" is designed to be mounted3; 2.22. "Rim" means the support for a tyre-and-tube assembly, or for a tubeless tyre, on which support the tyre beads are seated3; 2.23. "Theoretical means a rim whose width would be equal to x times the rim" nominal section width of a tyre; the value of x shall be specified by the manufacturer of the type;
Annex 5 to this Regulation or, depending on 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: Nominal rim diameter code ("d" symbol) Value of the "d" symbol expressed in mm 8 9 10 11 12 13 14 203 229 254 279 305 330 356 15 16 17 18 19 381 406 432 457 483 20 21 22 24 25 508 533 559 610 635 14.5 16.5 17.5 19.5 20.5 22.5 24.5 26 28 30 368 419 445 495 521 572 622 660 711 762 2.20.1.4. An indication of the tyre to rim fitment configuration when it differs from the standard configuration and is not already expressed by the symbol "d" denoting the nominal rim diameter code; 2.21. "Nominal rim diameter (d)" means the diameter of the rim on which a tyre is designed to be mounted3; 2.22. "Rim" means the support for a tyre-and-tube assembly, or for a tubeless tyre, on which support the tyre beads are seated3; 2.23. "Theoretical rim" means a rim whose width would be equal to x times the nominal section width of a tyre; the value of x shall be specified by the manufacturer of the type;
GRRF-86-43e.docx