ISO 4209-1:2001 pdf download

ISO 4209-1:2001 pdf download.Truck and bus tyres and rims(metric series)一
Part 1: Tyres.
This part of ISO 4209 specifies the designation. dimensions and load ratings of the metric series of tyres primarily intended for trucks and buses.
It is applicable to bias-belted, diagonal and radial tyres for trucks and buses, mounted on 50 tapered rims and on 150 tapered (drop-centre) rims.
It is also applicable to different concepts and types of tyres and rims; in these cases, however, appropriate rim/section ratios K1, K4, coefficients K2, K3, CR and construction codes have been added to Tables 3, 4 and 5.
ISO 4209-2 deals with requirements for rims.
2 Normative reference
The following normative document contains provisions which, through reference in this text, constitute provisions of this part of ISO 4209. For dated references, subsequent amendments to, or revisions of. any of these publications do not apply. However, parties to agreements based on this part of ISO 4209 are encouraged to investigate the possibility of applying the most recent edition of the normative document indicated below. For undated references, the latest edition of the normative document referred to applies. Members of ISO and lEG maintain registers of currently valid International Standards.
ISO 4223-1 Definitions of some terms used in the tyre industry — Part 1: Pneumatic tyres.
3 Terms and definitions
For the purposes of this part of ISO 4209, the terms and definitions given in ISO 4223-1 apply.
4 Tyre designation
4.1 Content
The designation of the tyre shall be shown on its sidewall and shall include the following markings, to be shown close to each other:
size and construction (see 4.2);
service condition characteristics (see 4.3).
4.2.2 Nominal section width
The nominal section width shall be expressed in millimetres.
For tyres fitted to 5° taper rims and for tyres fitted to 15° taper rims, the nominal tyre section width shall end in 5.
4.2.3 Nominal aspect ratio
The nominal aspect ratio shall be expressed as a percentage and shall be a multiple of 5.
4.2.4 Tyre construction code
The tyre construction code shall be as follows:
B for bias-belted construction;
0, or — , for diagonal/bias construction;
R for radial construction.
NOTE Other codes will be established for new lyre concepts (constructions).
4.2.5 Nominal rim diameter
The nominal rim diameter for 5° tapered bead seat rims and for 15° tapered bead seat (drop-centre) rims shall be expressed by a code (see Table 1 for code correlation).
NOTE 15° tapered rims are to be used only for tyres with load index 122 and larger.
However, it shall be expressed in millimetres for new and future concepts where the mounting of existing tyres on
new concept rims or of new concept tyres on existing rims would be incompatible.
4.3 Service condition characteristics
4.3.1 Marking
The characteristics shall be indicated as follows:
Load index single / Load index dual Speed symbol