Tyre size designation definition

Tyre size designation means a designation showing:

Tyre size designation means the designation as defined in paragraph 2.19. of Regulation No. 30 for class C1 tyres and paragraph 2.17. of Regulation No. 54 for class C2 and C3 tyres.

Tyre size designation means a combination of figures that uniquely identify the geometric size of the tyre, comprising the nominal section width, the nominal aspect ratio and the nominal diameter. Precise definitions of these features may be found in Regulation No. 30.

Tyre size designation means the designation as defined in Regulation No. 30 for class C1 tyres and in UN Regulation No. 54 for class C2 and C3 tyres.

Tyre size designation means, except in the case of types of tyre for which the tyre-size designation is shown in the first column of the tables in Annex 5 to this Regulation, a designation showing:

Tyre size designation means a designation showing the nominal section width, the nominal aspect ratio and the conventional number that denotes the nominal rim diameter (these terms are further defined in Regulation No. 30).

Tyre size designation means the description containing the following:

Tyre size designation means a designation showing: 2.15.1. the nominal section width (S1). This value must be expressed in mm. 2.15.2. the nominal aspect ratio (Ra). 2.15.3. an indication of the structure, placed in front of the nominal rim diameter marking, as follows: 2.15.3.1. on diagonal (bias-ply) tyres, the symbol "-" or the letter "D"; 2.15.3.2. on radial-ply tyres, the letter "R"; 2.15.3.3. on bias-belted tyres, the letter "B". 2.15.4. the conventional number "d" denoting the nominal rim diameter; 2.15.5. optionally, the letters "IMP" after the nominal rim diameter marking in case of Implement tyres; 2.15.6. optionally, the letters "FRONT" after the nominal rim diameter marking in case of Tractor steering wheel tyres; 2.15.7. However for tyres listed in Annex 5 the "tyre size designation" is that shown in the first column of those tables.

Tyre size designation means a designation showing: 2.21.1. The nominal section width. This must be expressed in millimetres, except in cases of tyres for which the size designation is shown in the first column of the tables in Annex5 to this Regulation; 2.21.2. The nominal aspect ratio except in case of tyres for which the size designation is shown in the first column of the tables in Annex 5 to this Regulation or, depending on the tyre design type, for example, tyres identified by the tyre to rim fitment configuration symbol "A" (see paragraph 2.21.4.), the nominal outer diameter expressed in mm; 2.21.3. A conventional number "d" (the "d" symbol) denoting the nominal rim diameter of the rim and corresponding to its diameter expressed either by codes (numbers below 100) or in millimetres (numbers above 100). Numbers corresponding to both types of measurements may be used in the designation; 2.21.3.1. The values of the "d" symbols expressed in millimetres are shown below: 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 2.21.4. 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.

Tyre size designation means a combination of letters, numbers and symbols which uniquely identify the geometric size of the tyre.